Environment
Climate Change
Policies and Basic Approach
How the world responds to climate change and increasingly frequent and severe natural disasters – whether through initiatives such as the United Nations' Sustainable Development Goals (SDGs), the ratification of the Paris Agreement at the United Nations, or other initiatives – is one of the most pressing issues of our time. Businesses must also play their part, and it is becoming increasingly important for companies to act responsibly to support the creation of a sustainable society.
The material issues ("Materiality") identified by Mitsui & Co. include "Establish a foundation for sustainable and stable supply," and "Create a community coexisting with nature." Furthermore, our Environmental Policy stipulates that we will pursue the kinds of business that will help us act to reduce greenhouse gas (GHG) emissions, as well as mitigate and adapt to climate change. We have positioned climate change as one of the key themes of our sustainability management in our Medium-term Management Plan 2026, and continuing from our previous Medium-term Management Plan, we will work to transform our business portfolio with the aim of achieving a decarbonized society. Moreover, we position technological innovation in environment and clean tech as one of the core strategic fields, and are working to pursue and expand investment opportunities.
We have set targets that aim to contribute to the goals of the Paris Agreement and Japan's own medium- to long-term GHG emission reduction targets. Through our global and wide-ranging business activities, we will help to develop economies and communities in many countries and regions across the world and contribute to solving the global challenges we face, such as mitigating and adapting to climate change.
At a business briefings held on March 13, 2026, Mitsui presented the status of our efforts to address climate change as progress in our sustainability management. Please refer to the link below for more information.
Disclosure Based on TCFD Recommendations
Disclosure Policy
In December 2018, Mitsui declared its support for the Task Force on Climate-related Financial Disclosures (TCFD). In accordance with the TCFD recommendations and as a responsible company operating globally, we actively promote information disclosure with an awareness of stakeholder demands.
Disclosure Based on TCFD Recommendations (December 2025) (PDF 1.47MB)
Governance
Governance Structure for Climate Change Response
We have positioned addressing climate change as a key management issue. Basic management policy, business activities, and corporate policies and strategies that concern climate change are planned and developed, and advised on by the Sustainability Committee, an organization under the Executive Committee. The Sustainability Committee is structured so that its activities are appropriately supervised by the Board of Directors, and matters deliberated on by the Sustainability Committee are regularly discussed and reported to the Executive Committee and the Board of Directors meetings. During the fiscal year ended March 31, 2026, agenda items related to the Company's response to climate change were discussed and reported on at Board of Directors meetings. These items included climate change related targets and the progress, as well as responses relating to mandatory disclosure requirements. In addition, board members, including Directors, Audit & Supervisory Board Members, and External Members, held free discussions on the theme of climate change response, creating a forum for active discussion on the topic.
| Officers in Charge of Business Units | Representative Director, Executive Vice President, Chief Strategy Officer (CSO), Chair of the Sustainability Committee |
|---|---|
| Administrative Office | Corporate Sustainability Div., Corporate Planning & Strategy Div. |
Please refer to the links below for more information on Mitsui's Sustainability Management Framework and the activities of the Sustainability Committee.
Climate Change-related Discussions
There were 22 major climate change-related discussions by the Sustainability Committee over the past three years.
- Report and free discussion on the business plan for FY March 2024 summary and issues related to climate
- Report on enhancing climate change-related disclosures (Scope 3 Emission/Reduction Contribution/Transition Risk/Physical Risk)
- Deliberations on performance-linked restricted stock-based remuneration/climate change assessment items (twice)
- Free discussion on Scope 1 and 2, and Scope 3 Category 15 reductions
- Report and free discussion on climate change/Scope 3 emission preliminary calculation results and future policies
- Report on enhancing disclosures based on TCFD recommendations (Transition Risk/Physical Risk)
- Report on climate change targets and Scope 3 emissions
- Report on Investor Day - outline of materials for the climate change part
- Deliberations on updating internal carbon pricing system
- Report and discussion on business plan progress toward climate change targets (Scope 1 and 2, and Scope 3 Category 15)
- Discussion on climate-related targets
- Report on progress in sustainability information disclosure
- Report on the status of consideration and response policy regarding the International Sustainability Standards Board (ISSB)
- Report on progress toward halving Scope 1 and 2 emissions of non-consolidated/consolidated subsidiaries
- Deliberation and report on the update and utilization of internal carbon pricing system
- Deliberation and discussion (three times) on climate-related evaluation items in the performance-linked restricted stock-based remuneration plan
- Free Discussion on Progress Report and Policy Responses to Climate Change
- Report on Scenario Analysis Response Policy on ISSB/SSBJ Disclosures
- Report on Method of Evaluation of Environmental Factors in Performance-linked and Restricted-Stock-Based Remuneration FY March 2026
- Report on Climate Change Response Policy in the Next Medium-Term Management Plan
- Report on Internal Carbon Pricing Update and its Application
- Report on Scope 1 and 2 Reduction and Review of Carbon Credit Procurement Range and Policy
- Report on IFRS S1 and S2 (3 times)
Sustainability Advisory Board (SAB)/Collaboration with External Experts
We have established SAB, a group comprising external experts on societal and environmental topics such as climate change. The Sustainability Committee uses information and advice from SAB members in their deliberations. In addition to Sustainability Advisory Board members, we also communicate with external experts to help ensure that we address climate change appropriately.
Please refer to the links below for more information on Mitsui's Sustainability Management Framework and the activities of the Sustainability Committee.
- Our Approach to Sustainability and Management Framework: Sustainability Governance and Oversight
- Our Approach to Sustainability and Management Framework: Sustainability Committee Details
- Our Approach to Sustainability and Management Framework: Sustainability Advisory Board (SAB)
Reflecting Climate Change Responses in the Remuneration of Directors and Audit & Supervisory Board Members Plan
The company decided to introduce a new performance-linked restricted stock-based remuneration plan from the fiscal year ended March 2023, which was approved at the General Meeting of Shareholders on June 22, 2022. The remuneration plan has been introduced to incentivize the company to fulfill our social responsibilities and to continuously improve our medium- to long-term performance and corporate value. As one of the management evaluation indicators, sustainability elements, including our response to climate change, are included. For more information, please see "4. Corporate Information, 4. Corporate Governance, (4) Remuneration of Directors and Audit & Supervisory Board Members" in the Annual Securities Report for the fiscal year ended March 31, 2025.
Annual Securities Report for the fiscal year ended March 31, 2026 (PDF 10.3MB)
Strategy
Policy and Process for Scenario Analysis
Since endorsing the TCFD recommendations in December 2018, the Company has conducted scenario analysis to respond flexibly to changes in the global business environment and enhance the resilience of its strategy. While the relevant business units have traditionally analysed risks, countermeasures and quantitative impacts for the businesses subject to scenario analysis and discussed the results at the Sustainability Committee, the Company has considered the climate-related risks and opportunities identified through scenario analysis in the formulation of its business plans since the fiscal year ended March 2023, in light of the growing importance of this analysis. By incorporating scenario analysis into the business planning process, which is reported to and discussed by the Corporate Management Committee and approved by the Board of Directors, the results of scenario analysis are reviewed and discussed at the management level and reflected in the Company's business portfolio strategy.
The Company conducts scenario analysis on a regular basis to analyse significant risks and opportunities for the Company and its value chain. Businesses subject to scenario analysis are selected based on business scale and the impact of climate change, and the results of scenario analysis are presented in the following sections. This analysis is not intended to forecast the future, but rather to estimate business impacts under certain conditions, and differs from the worldview assumed as the basis for the Company's business strategy.
Each scenario used in the scenario analysis assumes possible future changes in the business environment, and the Company does not formulate its business plans on the premise that such scenarios will materialize.
Selected Scenarios
The Company conducted scenario analysis for the period up to 2050, using short-term, medium-term and long-term time horizons, defined respectively as up to the next fiscal year, up to 2030 and up to 2050. These time horizons are aligned with the Company's business plans, GHG emission reduction target periods and the long-term recovery periods of its assets.
For transition risks and opportunities*1, the Company conducted analysis using a current scenario, a 2°C scenario and a 1.5°C scenario aligned with the Paris Agreement, by referring to scenarios including those described in the World Energy Outlook (WEO) published by the International Energy Agency (IEA). For physical risks*2, the Company engaged an external advisor to analyse each risk item in the future, as of 2030 and 2050, for invested projects with high exposure to physical risks under a 4°C scenario.
*1 Risks and opportunities arising from changes in policies and regulations, technological development, market trends, market reputation and other factors.
*2 Risks of physical damage and other impacts arising from the increase in natural disasters and extreme weather events associated with climate change.
- Current scenario: A scenario based on the Company's long-term outlook, taking into account current policies and technology adoption, with reference to the IEA Stated Policies Scenario (STEPS), Current Policies Scenario (CPS) and other scenarios.
- 2°C scenario: A scenario assuming the implementation of announced government pledges, with reference to the IEA Announced Pledges Scenario (APS) and other scenarios.
- 1.5°C scenario: A scenario achieving the goal of limiting global warming to below 1.5°C above pre-industrial levels, with reference to the IEA Net Zero Emissions by 2050 Scenario (NZE) and other scenarios.
- 4°C scenario: A scenario in which the global average temperature rises by approximately 4°C by 2100, with reference to IPCC RCP 8.5 and other scenarios.
Key Assumptions Used in Scenario Analysis
The key assumptions commonly used across all businesses in the Company's scenario analysis are as follows. Other key assumptions used for individual businesses are described in the scenario analysis results for each business under "Outlook of business environment." This scenario analysis is conducted primarily based on assumptions relating to climate-related transition and physical factors, and does not incorporate other factors (e.g. such as sudden changes in international affairs or geopolitical events), as analytical assumptions due to their high uncertainty.
- The global population is expected to increase gradually to more than 8.5 billion in 2030 and more than 9.6 billion in 2050, driven by demographic changes mainly in Sub-Saharan Africa and Asia.*
- The global economic growth rate is expected to remain at approximately 3% until 2030 and around 2.5% thereafter, with growth of 1-2% in OECD countries and relatively higher growth in non-OECD countries, particularly in Asia and Sub-Saharan Africa.*
- Carbon prices are set by reference to definitions and prices published by external organizations such as the IEA, taking into account the country or region of the relevant asset, the applicable time horizon and other factors.
* Based on the assumptions in the WEO published by the IEA.
Transition Risk Analysis
For selected businesses, the Company uses multiple climate change scenarios to assess the impacts of transition risks on its business strategy and financial planning, and to consider necessary responses.
Selection of Businesses Subject to Scenario Analysis
The Company operates a diverse range of businesses around the world and is involved in a wide variety of industries and value chains.
To identify risks and opportunities that could reasonably be expected to affect the Company's outlook and its impacts through scenario analysis, the Company identified the businesses subject to analysis based on business scale (profit and invested capital), and the existence and magnitude of business impacts from climate change, as described below.
(1) Screening of businesses for consideration
The Company classified its businesses into 16 VCs and further organized them into 51 businesses as subcategories. The Company then identified whether climate-related risks and opportunities existed for each business, with reference to SASB* industries and other sources.
Based on those results and the business scale of each VC(three-year average of Profit after Tax (PAT) and Invested Capital (IC)), the Company selected the businesses subject to scenario analysis. Businesses with small business scale and climate-related risks and opportunities considered to have only a limited impact on the Company as a whole were excluded from the scope of analysis. As a result, 29 businesses were identified as businesses for consideration.
* Sustainability Accounting Standards Board.
(2) Assessment of risks and opportunities and estimation of financial effects
For the 29 businesses selected in step 1, the Company identified climate-related risks and opportunities, taking into account impacts from upstream and downstream VCs, and scored the scale and likelihood of financial effects by scenario. Based on the scoring, the Company comprehensively considered business characteristics, its investment strategy, expected future business opportunities and secondary risks, and selected the businesses for which the results of transition scenario analysis are disclosed, which are shown below. For risks and opportunities whose financial effects can be reasonably estimated, the Company also discloses quantitative estimates.
Results of Transition Scenario Analysis: Key Risks and Opportunities
The risks and opportunities in each business segment are as follows.
| Segment | Risk (Bold: financial effects estimated) |
Opportunity |
|---|---|---|
| Mineral & Metal Resources Steel VC: Metallurgical coal business, iron ore business and steelmaking materials business Non-ferrous metals VC: Copper business |
|
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| Energy Energy supply VC: Oil and gas development and LNG business, next-generation fuel business |
|
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| Mobility, Digital & Infrastructure Power VC: Thermal power generation business and renewable energy business Mobility and transport VC: Land mobility business |
|
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| Chemicals Chemicals VC: Mobility materials business Forest resources VC: Forest resources business |
|
|
*CCS (Carbon Capture and Storage)
CCUS (Carbon Capture, Utilisation and Storage
Financial Impact on Businesses*
Large: 45 billion JPY ~ 75 billion JPY
Medium: 15 billion JPY ~ 45 billion JPY
Small: ~15 billion JPY
*Impact on profit after tax (PAT).
Iron & Steel VC: Metallurgical coal business, Iron ore business and Ferrous raw materials business

Our business
Metallurgical Coal Business: Development, processing and marketing of metallurgical coal
Iron Ore Business: Development, processing and marketing of iron ore
Ferrous Raw Materials Business: Manufacturing of ferrous raw materials, including ferrosilicon
Within the iron & steel VC, GHG emissions are particularly concentrated in "steelmaking".
As the Group's Metallurgical Coal, Iron Ore and Ferrous Raw Materials businesses are positioned in the "Raw material extraction and procurement" stage of the VC, the Group's exposure to climate-related transition risks is considered relatively lower than that of the iron & steel VC as a whole. Conversely, climate-related opportunities for the Group are primarily concentrated in the "Raw material extraction and procurement" stage of the VC. Please refer to the following for further details.
| Iron & Steel VC | ||
|---|---|---|
| Outlook of business environment | Current scenario Underpinned by economic growth in India, Southeast Asia and other regions, demand for steel used in buildings, automobiles and other applications remains robust. Driven by population growth and the continued expansion of emerging economies, steel demand is expected to increase toward 2030 and 2050. Although growth in iron ore demand is expected to be more moderate than that in steel demand due to the increased use of scrap and other factors, iron ore demand is nevertheless expected to remain on a growth trajectory. While the share of blast furnace steelmaking, currently the predominant production method, is expected to decline as regulations to reduce GHG emissions are strengthened and technological innovation progresses, the share of electric furnace steelmaking is expected to increase toward 2030, alongside the adoption of technologies such as carbon capture, utilization and storage (CCUS). By 2050, the share of electric furnace steelmaking is expected to remain broadly unchanged due to constraints on raw materials supply. Although the share of blast furnace steelmaking is expected to decline, it is expected to retain a certain share through the adoption of new technologies, including hydrogen-based reduction. Demand for stainless steel and certain ferroalloys is projected to grow faster than demand for crude steel, and demand for ferrous raw materials such as nickel is also expected to increase. 2°C Scenario Against the backdrop of tighter industry regulations on GHG emissions and growing market expectations, no significant change in overall steel demand is anticipated. However, by 2030, the decline in the share of blast furnace steelmaking and the expansion of electric furnace steelmaking are expected to occur more rapidly than under the Current Policies Scenario. The adoption of new technologies is also expected to be brought forward and to expand further toward 2050. 1.5°C Scenario Requirements to reduce GHG emissions are expected to become even more stringent, resulting in a further decline in the share of blast furnace steelmaking. As the expansion of electric furnace steelmaking will be constrained by scrap availability, its share is expected to remain at a level similar to that under the 2°C Scenario. Consequently, the adoption of new technologies is expected to accelerate from 2030 and advance substantially toward 2050. |
|
| Impacts on the Business and Response | Risks and opportunities | (Risks) Metallurgical Coal
Iron Ore
Ferrous Raw Materials
(Opportunity)
|
| Anticipated financial impact and response |
Metallurgical Coal Iron Ore Ferrous Raw Materials |
|
| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Please scroll horizontally to look at table below.
| Financial Impacts | ||||||
|---|---|---|---|---|---|---|
| 2°C Scenario | 1.5°C Scenario | |||||
| Metallurgical Coal | Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
| Iron Ore | Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Non-ferrous materials VC: Copper business

Our business
Copper Business: Development, processing and marketing of copper resources
As the Group's business (Copper Business) is positioned in the "Raw material extraction and procurement" stage, the Groups climate-related opportunities identified through scenario analysis are primarily concentrated in the "Raw material extraction and procurement" stage of the VC. Please refer to the following for further details.
| Copper Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Copper demand is expected to increase in line with supply, driven by the expansion of power grids associated with the energy transition, growth in EV production, the expansion of renewable energy generation, and increasing power demand from generative AI and other factors. Demand is expected to increase by approximately 20% from the current level by 2030 and by nearly 40% by 2050. Meanwhile, investment to improve energy efficiency in mining, smelting, transportation and other processes that contribute to GHG reduction is also expected to increase. In addition, scrap recycling is also expected to progress. 2°C Scenario The increase in copper demand related to clean energy is expected to accelerate from the end of the 2020s compared with the current scenario and reach approximately 50% above the current level by 2050. Investment in GHG reduction is also expected to accelerate further. 1.5°C Scenario As electrification in transportation, buildings and other sectors accelerates due to the energy transition and growth in copper demand also accelerates, demand is expected to grow by more than 20% from the current level by 2030 and by more than 50% by 2050. Meanwhile, concerns over supply shortages and deterioration in the quality of copper ore are expected to increase. |
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| Impacts on the Business and Response | Risks and opportunities | (Opportunity)
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| Anticipated financial impact and response |
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| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Energy Supply VC: Upstream Oil and Gas and LNG Business, Next-generation Fuel Business

Our business
Upstream Oil and Gas and LNG Business: Exploration, development and production of oil and natural gas, LNG production and transportation to marketing and trading
Next-generation Fuel Business: Development and commercialization of clean hydrogen and ammonia, SAF (Sustainable Aviation Fuel) and other fuels
Offshore Oil and Gas Production Facilities Business: Construction, ownership and long-term chartering of floating offshore oil and gas production, storage and offloading facilities, and provision of O&M services
Gas Distribution: City gas distribution business under concession agreements
In the energy supply VC, GHG emissions are particularly concentrated in "Raw material extraction and procurement" and "Sales, use and collection".
The Group's businesses (Upstream Oil and Gas and LNG Business, Next-generation Fuel Business, Offshore Oil and Gas Production Facilities Business and Gas Distribution Business) are mainly in "Raw material extraction and procurement" and "Transportation and storage".
The Group's climate-related transition risks identified through scenario analysis are primarily concentrated in "Raw material extraction and procurement" in the VC. Please refer to the following for further details.
| Upstream Oil and Gas and LNG Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Oil demand is expected to continue on an increasing trend toward 2050, although growth is expected to slow due to the spread of EVs and progress in energy efficiency. Natural gas demand is expected to expand steadily toward 2050, driven by electricity and industrial applications in emerging Asian countries such as China and India, as well as increasing global electricity demand associated with data center demand from the spread of AI and the progress of electrification. 2°C Scenario Oil demand is expected to peak around 2030 due to electrification in the transport sector and progress in energy conservation, and then gradually decline toward 2050. Natural gas demand is expected to increase until around the mid-2030s and then remain broadly flat or turn to a gradual decline. Electricity demand is expected to continue increasing due to the progress of electrification and data center demand, while the introduction of renewable energy will expand. Natural gas is expected to maintain its importance as a flexible power source complementing renewable energy, and its use in combination with CCUS and low-carbon hydrogen production is also expected to expand. 1.5°C Scenario Oil demand is expected to decline rapidly after 2030 and decrease significantly toward 2050. Natural gas demand is also expected to decrease significantly toward 2050. However, natural gas is expected to maintain a certain role in applications such as the provision of flexibility to complement the large-scale introduction of renewable energy and hydrogen production. GHG emissions regulations and methane emissions regulations are expected to become even more stringent, and the introduction of electrification, renewable energy, CCS/CCUS, clean hydrogen and ammonia, and other technologies is expected to accelerate. Electricity demand is expected to continue increasing due to electrification and the expansion of data center demand, but much of this demand is expected to be met by low-carbon power sources such as renewable energy. |
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| Impacts on the Business and Response | Risks and opportunities | The Company operates upstream oil and gas and LNG businesses in many regions, including the Middle East, Southeast Asia, North America and Oceania. As the energy transition progresses, the following risks and opportunities may materialize. (Risk)
(Opportunity)
|
| Anticipated financial impact and response |
|
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| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Please scroll horizontally to look at table below.
| Financial impacts | |||||
|---|---|---|---|---|---|
| 2°C Scenario | 1.5°C Scenario | ||||
| Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Short term (Fiscal year ending March 2028) Medium |
Medium term (Fiscal year ending March 2030) Medium |
Long term (Fiscal year ending March 2050) Medium |
| Next-generation Fuel Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Demand for next-generation fuels, including biofuels, is expected to expand over the medium to long term, mainly as a complement to fossil fuels. Hydrogen, ammonia and methanol are expected to be used mainly as chemical and fertilizer feedstocks until around 2030, but are then expected to drive growth in the fuel market. In addition, biofuels such as SAF and HVO (Hydrotreated Vegetable Oil) are expected to be increasingly introduced mainly in the transport sector and become one of the promising options for decarbonization. 2°C Scenario With the implementation of decarbonization policies and emissions reduction targets in each country, the adoption of low-carbon fuels in the transport, industrial and power generation sectors is expected to accelerate. Clean hydrogen, ammonia and methanol are expected to be increasingly introduced mainly in sectors where decarbonization is difficult through electrification alone, and the use of biofuels such as SAF and HVO is also expected to expand. 1.5°C Scenario As decarbonization progresses rapidly, next-generation fuels are expected to play an important role in the energy system. Hydrogen and ammonia are expected to become widely used as key energy sources supporting the decarbonization of steel, chemicals, shipping, power generation and other sectors, while biofuels and synthetic fuels are expected to be used primarily in sectors where electrification is difficult, such as aviation and shipping. On the other hand, in the road transport sector, electrification centered on EVs is expected to progress rapidly, and therefore growth in biofuel demand is expected to be limited. |
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| Impacts on the Business and Response | Risks and opportunities | (Opportunity)
(Risk)
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| Anticipated financial impact and response |
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| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Power VC: Thermal Power Generation Business and Renewable Energy Business

Our business
Thermal power generation: Gas- and oil-fired power generation and coal-fired power generation
Renewable Energy Business: Renewable energy generation, including solar, wind and hydro power generation
In the power VC, GHG emissions are particularly concentrated in "Power generation" in thermal power generation.
However, the Group's gas and oil fired power generation and coal-fired power generation businesses are mainly under the long-term power purchase agreements which compensation is paid based on available generation capacity rather than power generation volume, and as a result, the climate-related transition risks associated with the operation of the power generation assets held by the Group are limited.
Please refer to the following for further details.
| Thermal Power Generation Business and Renewable Energy Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Global electricity demand is expected to continue to increase, driven by population and economic growth, as well as from demand from data centers and other facilities associated with the spread of AI, alongside the progress of electrification in the industrial and transport sectors. In the power generation mix, coal-fired power generation is expected to peak out by around 2030 as decarbonization progresses, while gas-fired power generation is expected to maintain a certain role in the 2030s as an important power source that supports stable electricity supply and complements the variability of renewable energy. Renewable energy is expected to continue expanding, mainly solar and wind power, and is expected to account for more than half of power generation by around 2035 and approximately two-thirds by 2050. 2°C Scenario As climate change measures and initiatives to achieve net zero targets progress in each country, electricity demand is expected to increase at a faster pace than under the current scenario due to accelerating electrification, mainly in the transport and industrial sectors, and expanding electricity demand from data centers and other facilities. Coal-fired power generation is expected to decline rapidly, and gas-fired power generation is also expected to decrease over the long term, while power generation from renewable energy is expected to accelerate and investment to secure flexibility, such as storage batteries and transmission grid reinforcement, is also expected to increase. 1.5°C Scenario Electricity demand is expected to increase significantly over the medium to long term, driven by the rapid progress of decarbonization trends and expanding electricity demand from electrification, data centers and other facilities. The transformation of the power generation mix is also expected to accelerate, with coal-fired power generation declining rapidly and gas-fired power generation also decreasing significantly, except for certain applications involving CCUS or low-carbon fuels. Renewable energy is expected to account for the majority of electricity supply by 2050. |
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| Impacts on the Business and Response | Risks and opportunities | The following describes the climate-related risks and opportunities and financial impacts related to the power generation business assets currently held by the Company. The analysis covers existing assets and does not incorporate the impacts of changes in the portfolio resulting from future new investments, asset recycling, business sales or other transactions. Thermal Power Generation (Risk)
(Opportunity)
Renewable Energy (Opportunity)
|
| Anticipated financial impact and response | Thermal Power Generation
|
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| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Please scroll horizontally to look at table below.
| Financial impacts: Thermal Power Generation | |||||
|---|---|---|---|---|---|
| 2°C Scenario | 1.5°C Scenario | ||||
| Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Short term (Fiscal year ending March 2028) Small |
Medium term (Fiscal year ending March 2030) Small |
Long term (Fiscal year ending March 2050) Small |
Coal-fired power projects:
We will not invest in any new projects. We are studying plans to exit from our remaining coal-fired power assets* by 2040. We take into account the responsibility of the current owners to address the impact on local communities of power purchase agreements which will continue into the 2040s, and to ensure appropriate returns for our shareholders, as preconditions for proceeding with exit.
* Remaining coal-fired power assets: Malaysia and Morocco
Gas-fired power projects:
We will examine the significance of holding each asset while fulfilling our responsibility as an operator to ensure a stable supply of electricity.
When we consider participating new gas-fired power projects, we will take into account the need for gas-fired power as a transition energy source such as the power supply mix and electricity demand outlook for each region, as well as potential future carbon costs.
Mobility and Transportation VC: Land Mobility Business

Our business
Land Mobility Business: Logistics, production, wholesale, sales, finance, leasing and rental of automobiles, automotive parts, construction machinery and mining machinery
In the mobility and transportation VC, GHG emissions are particularly concentrated in the "Use" stage.
However, as the Group's businesses (sales and related services for passenger vehicles, construction and mining vehicles, and freight transport vehicles) are generally in "Sales and leasing", the Group's climate-related transition risks are considered to be relatively lower than those across the VC as a whole.
Please refer to the following for further details.
| Land Mobility Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Against the backdrop of population growth and economic growth, total demand for land mobility by passenger vehicles and trucks is expected to continue increasing and reach nearly twice the current level by 2050. Regulations related to climate change mitigation are expected to be strengthened, driving changes in demand while accelerating electrification (EVs and FCVs). By 2035, approximately one in four vehicles is expected to be electrified, and EVs are expected to account for 50% of vehicle sales. 2°C Scenario While total demand for land mobility is not expected to differ significantly from the current scenario, electrification is expected to progress further. By 2035, approximately 30% of vehicles are expected to be electrified, and EVs are expected to account for roughly two-thirds of vehicle sales. 1.5°C Scenario Although growth in total demand for land mobility is expected to moderate somewhat after 2030, no significant change is anticipated. On the other hand, electrified vehicles are expected to grow more rapidly, with the number of vehicles in operation reaching 1.5 times that under the current scenario by 2035, and their sales share exceeding 90%. |
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| Impacts on the Business and Response | Risks and opportunities | (Risk)
(Opportunity)
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| Anticipated financial impact and response |
|
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| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Chemicals VC: Mobility Materials Business

Our business
General Industry Materials Business: Sales and trading of materials for various industries, including plastic colorants and synthetic resins for industrial applications
Mobility Materials Business: Sales and trading of materials for various industries, including plastic colorants and synthetic resins for automobiles
Raw Materials for Chemicals Business (commodity and high-performance): Sales and trading of chemical raw materials for synthetic resins and other applications
In the chemicals VC, GHG emissions are particularly concentrated in "Manufacturing".
However, the Group's businesses are mainly concentrated in "Sales and trading", and as a result, the Group's climate-related transition risks and opportunities are concentrated in "Sales and trading".
Please refer to the following for further details.
| Mobility Materials Business | ||
|---|---|---|
| Outlook of business environment | Current scenario Oil demand for petrochemical applications is expected to continue increasing toward 2050. In particular, significant investment will be required for improving energy-intensive production processes for basic chemicals, fuel switching for GHG reduction, introduction of CCUS, and the advancement of plastics recycling, and higher production costs for materials may push the increase in procurement costs. In the automotive sector, although the adoption of electrified vehicles such as EVs and HVs is expected to progress, global automobile production volumes are expected to continue increasing, and demand for materials that contribute to weight reduction and higher functionality is expected to remain firm. 2°C Scenario Compared to the current scenario, the increase in oil demand for chemical raw material applications is expected to be limited, while investment in low-carbon technologies is expected to occur earlier and expand in scale, further increasing the risk of higher production costs. In the automotive sector, electrification is expected to accelerate more than under the current scenario, and demand for battery-related materials, lightweight materials and other materials is expected to expand, while stronger requirements are expected for materials to respond to decarbonization and circular use. 1.5°C Scenario Against the backdrop of population growth and economic growth, production volumes of primary chemicals, including commodity chemicals, are expected to increase compared with the current scenario even in 2050. At the same time, the use of CCUS, electrification, hydrogen fuel use and recycled raw materials is expected to progress over the medium to long term, and investment in these low-carbon technologies is expected to expand rapidly after 2035. In addition, electrification of automobiles and the transition to a circular economy are expected to progress rapidly, and demand for recycled materials and low-carbon materials is expected to expand, while requirements to reduce GHG emissions across the entire supply chain are also expected to increase. |
|
| Impacts on the Business and Response | Risks and opportunities | (Risk)
(Opportunity)
|
| Anticipated financial impact and response |
|
|
| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Forest Resources VC: Forest Resources Business

Our business
Forest Resources Business: Afforestation, forest operation and management, and forest asset management
Our business is primarily positioned in the "Forest Management" stage of the VC. Please refer to the details below.
| Outlook of business environment | Current scenario Demand for forest resources, including timber and woodchips used as raw materials, is expected to increase steadily, driven by global population growth and the expansion of housing and paper markets, particularly in emerging economies across Asia. In addition, the value of forest resources, primarily plantation timber, is expected to increase as countries strengthen natural forest protection policies and logging regulations. 2°C Scenario Demand for forest resources, including woodchips used as raw materials for housing materials and paper products, is expected to continue increasing steadily, as under the current scenario. In addition, growing recognition of the CO2 absorption function of forest resources and their characteristics as renewable natural materials is expected to drive the expansion of forest-based carbon credit markets, higher carbon credit prices, and growth in markets for high-value-added wood-derived products such as biochemicals. 1.5°C Scenario As efforts to reduce CO2 emissions intensify, carbon prices in developed countries are expected to rise to approximately 1.5 times the level assumed under the 2°C Scenario. Accordingly, further expansion of forest-based carbon credit markets, higher carbon credit prices, and growth in markets for high-value-added wood-derived products such as biochemicals are expected. |
|
|---|---|---|
| Impacts on the Business and Response | Risks and opportunities | (Opportunity)
(Risk)
|
| Anticipated financial impact and response |
|
|
| Current financial impacts | The climate-related risks and opportunities described above did not have a material impact in the fiscal year ending March 31, 2026. | |
Physical Risk Analysis
The Company operates a wide range of businesses in various countries and regions, and may be affected if risks materialize due to an increase in extreme weather events associated with climate change.
Accordingly, when making new business investments, the Company conducts physical climate risk analysis as necessary, while also obtaining advice from external experts where appropriate, and carries out appropriate risk management.
In addition, even after making investments, the Company reviews the effectiveness of countermeasures at the sites of each business as needed.
If physical risks materialize, the Company has established a business continuity plan, with the highest priority placed on respecting human life and with consideration also given to coexistence with local communities.
The Company also implements adaptation and mitigation measures to avoid risks, including insurance coverage, securing multiple suppliers and strengthening facilities.
In the fiscal year ended March 31, 2026, in order to verify the appropriateness of its current risk responses, the Company used external climate analysis tools to analyze the future impacts of physical risks on its invested projects as described below.

-
STEP 1
Selection of Sites with High Exposure to Physical Risks
-
Among the Company's invested projects, consolidated subsidiaries and equity-method affiliates with investment assets of 15 billion JPY or more or profit of 3 billion JPY or more as of the end of March 2025 were selected as the main scope of the analysis. At this stage, businesses planned for divestment by 2030, businesses consisting only of offices, businesses with sufficiently dispersed sites, and businesses mainly comprising movable assets were excluded from the scope of analysis because the quantitative impact of physical risks is assumed to be limited. Based on these conditions, and taking into account factors such as business activities and the geographic diversification of assets, 75 companies with high financial materiality in terms of physical risks were selected for analysis.
-
STEP 2
Physical Risk Analysis Using External Tools
-
For the selected projects, the locations of major assets were mapped, and business sites were classified into eight categories based on their operational characteristics: resource interests; port facilities, power plants and similar assets; factories and production sites; railways and pipelines; logistics centers and warehouses; offices and commercial facilities; nature-dependent sites; and people-dependent sites. For combinations of each category and seven types of hazards — flooding, storm surge, winds, landslides, wildfires, water stress and heatwaves — the Company independently assessed whether causal pathways, or impact pathways, which could lead to physical damage to property, plant and equipment.
Potential financial impacts resulting from business interruption or physical damage caused by these climate-related hazards are recognized as significant risks where the impacts are large.In analyzing future physical risks, the Company adopted the IPCC RCP 8.5 (SSP5-8.5) scenario, which assumes a 4°C temperature rise, and analyzed the impacts of the seven hazards described above in 2030, the medium term, and 2050, the long term. For risks with a high magnitude of financial impact and a high likelihood of occurrence, the Company calculated the impact amount as the impact at the time the hazard occurs, based on the maximum plausible event.
The Company selected models according to the complexity of meteorological phenomena associated with each hazard. For hazards where the scale of damage can be assessed using a single meteorological indicator, such as inundation depth, probability of occurrence or WBGT — namely flooding, storm surge, landslides, water stress and heatwaves — models based on the relevant indicators were adopted. For winds, where appropriate assessment is difficult based only on meteorological events, an integrated multi-factor model was adopted, and for wildfires, an integrated exposure-rate model was adopted. All models make integrated use of international and public standards and guidance, including those of the IPCC, FEMA, ILO and ISO.
-
STEP 3
Review of Response Measures
-
The Company implements appropriate responses for each business, including the introduction of site-level measures according to the nature of the risks, the development and annual review of BCPs, and insurance coverage. In addition to the results of this analysis, the Company regularly monitors the status of physical risks and implements additional measures as necessary.
Analysis Results
The physical risk analysis is intended to provide an overview of potential impacts that may arise as temperatures rise, taking into account the location information of each site, asset characteristics and other factors. This analysis conducts climate data-based analysis by hazard as shown in the table below; however, it does not indicate future actual damage amounts based on a detailed review of the actual conditions of individual businesses, such as operations, business design and contract terms, but represents estimated values of the potential financial impacts of risks associated with each hazard based on available information and certain assumptions, and does not indicate the amount of damage that will actually occur.
The results of this analysis are estimates based on the assumption that existing response measures are not incorporated, including BCPs, insurance coverage, disaster prevention and mitigation measures and other measures implemented, and hence the Company recognizes that the possibility of a material impact on its financial position or business continuity is limited at this time.
The scale and likelihood of physical risks vary depending on the type of hazard and the target region, and include both risks that may intensify over the medium to long term and risks that may fluctuate depending on timing and region. As an overall trend, assuming that response measures are not incorporated, the number of affected sites and the potential financial impacts are expected to increase toward 2050.
| Hazard | Number of sites exposed to risk | Potential financial impact, average per site (100 million JPY) |
Segments | Regions | Examples of adaptation measures | |||
|---|---|---|---|---|---|---|---|---|
| Medium term (FY March 2030) |
Long term (FY March 2050) |
Medium term (FY March 2030) |
Long term (FY March 2050) |
|||||
| Acute: Flooding |
Damage to buildings, equipment and inventory due to inundation from river flooding and torrential rainfall, and lost profits due to suspension of operations during the recovery period | 5 | 6 | 13 | 15 | Wellness Ecosystem, Energy, Iron & Steel Products, Chemicals | North America, Japan | Raising site ground levels and critical equipment, installing flood barriers, strengthening drainage capacity, developing embankments, etc. |
| Acute: Storm surge |
Damage to equipment and salt damage due to inundation of coastal sites caused by rising sea levels associated with typhoons and other events, as well as suspension of operations during the recovery period | 5 | 6 | 67 | 57 | Energy, Mineral & Metal Resources, Chemicals, Mobility, Digital & Infrastructure, Iron & Steel Products | North America, Oceania, Asia, Japan | Raising site ground levels and equipment, installing coastal protection measures, strengthening drainage capacity, implementing salt damage countermeasures, etc. |
| Acute: Winds |
Damage to building exteriors and outdoor equipment due to increased maximum instantaneous wind speeds, and lost profits due to suspension of operations caused by storms and power outages | 2 | 6 | Wellness Ecosystem | South America | Wind-resistant design, installation of windbreaks, etc. | ||
| Acute: Landslide |
Physical damage to sites located near slopes due to slope collapse and debris flows, and long-term suspension of operations | 2 | 3 | 100 | 73 | Mineral & Metal Resources, Mobility, Digital & Infrastructure | South America, Japan | Development of retaining walls and slope protection, installation of protective fences and drainage facilities, installation of debris inflow protection facilities, etc. |
| Acute: Wildfires |
Burn damage to buildings, equipment and biological assets due to fire spread, and lost profits due to suspension of operations during the recovery period and disruption of transportation routes | 12 | 12 | 2 | 2 | Chemicals | Oceania | Installation of firebreaks, thinning, firefighting measures, etc. |
| Chronic: Water stress |
Operational constraints, reduced production volumes and increased water costs due to water withdrawal restrictions | 6 | 3 | 2 | 16 | Mineral & Metal Resources, Chemicals | South America | Introduction of seawater desalination, improvement of water use efficiency, etc. |
| Chronic: Heatwave |
Restrictions on outdoor work, decline in labor productivity and constraints on equipment operations due to an increase in extremely hot days | 6 | 10 | 4 | 6 | Mineral & Metal Resources, Wellness Ecosystem | Oceania, Middle East, Asia | High-temperature-resistant design, introduction of air-conditioning equipment, restrictions on outdoor work and review of work arrangements, etc. |
* "Financial impact" represents the site-level financial impact aggregated by hazard in the event that the relevant hazard materializes.
* "Number of sites exposed to risk" counts sites with a representative value of 100 million JPY or more per year.
* For storm surge and landslides, although the number of target sites increases from 2030 to 2050, the average financial impact per site decreases due to the characteristics of the additional sites.
Impacts on the Fiscal Year Ended March 31, 2026
The physical risks described above did not have a material financial impact in the fiscal year ended March 31, 2026.
Medium- to Long-term Response Policy and Adaptation Investments
In the fiscal year ended March 31, 2026, as adaptation responses to physical risks, the Company implemented measures such as annual updates of BCPs and disaster preparedness drills at each site, continued insurance coverage, investments to improve disaster resilience of facilities, which are implemented continuously at each site, securing alternative transportation routes in advance, and water management responses such as desalination in water-stressed areas, and the related costs are included in ordinary operating expenses by business segment.
Risk Management
We identify company-wide material risks across organizational boundaries and implement a wide range of initiatives to hedge and control risks. For this purpose, Mitsui has established an integrated risk management system that centrally manages company-wide risks, through the Portfolio Management Committee under the Executive Committee. Under the integrated risk management system, the Corporate Staff Division, which acts as the secretariat, manages risks from a company-wide perspective. Material risks we assume include those related to the environment, society, and governance, such as risks from climate change, compliance, and infectious disease, disasters, terrorism, etc. We position risks regarding climate change (physical and transition) as the same level of importance as business investment, geopolitical, and country risks and are taking corresponding measures.
For details of our risk management structure, please refer to the following page.
For Mitsui & Co., which operates in countries and regions around the world, the policies of each country and region related to climate change have a significant impact on the profitability and sustainability of each of our businesses. We use the climate-change scenarios published by the IEA and other organizations when analyzing scenarios involving businesses that have significant impacts. We do so to gain an understanding of business impacts both in terms of risk and opportunity, and when considering investment projects, M&A, and other business decisions, we determine business priorities and take these scenarios into account.
In conducting business, we have put in place a system to ensure we give utmost consideration to the environment and society in projects at all stages, including at the launch of a new business, during operations, and even when withdrawing from the business. Our Sustainability Committee discusses response policies and measures regarding environmental and social risks (including climate-change risk), then reports to the Executive Committee and the Board of Directors, which then applies them following approval.
Metrics & Targets
GHG Reduction Targets
Mitsui has established achieving net-zero emissions as our Vision for 2050, and has set the following interim targets*1 as the pathway to achieving the goal.
- For Scopes 1 and 2, and Scope 3 Category 15 (Investments) of the company and its consolidated subsidiaries (including unincorporated JVs*2):
Halving GHG Impact*3 as of 2030 compared to 34 million t-CO2e in the fiscal year ended March 2020 - For Scopes 1 and 2, and Scope 3 Category 15 (Investments) of the company and its consolidated subsidiaries (including unincorporated JVs*2):
Reducing GHG emissions as of 30% compared to 44 million t-CO2e in the fiscal year ended March 2020*4 - For Scopes 1 and 2 of the company and its consolidated subsidiaries:
Halving GHG emissions as of 2030 compared to 0.8 million t-CO2e in the fiscal year ended March 2020. - The renewable energy ratio of our power generation portfolio:
Raising the ratio of renewable energy to over 30% as of 2030.
*1 Although the categorization of emissions data and the scope of reporting were expanded from the fiscal year ending March 31, 2026, the target boundary has remained unchanged from the fiscal year ending March 31, 2025, for progress management purposes, as retrospective calculation for the target base year is not feasible. For details, please refer to Appendices 4 and 5 of the presentation, Business Briefing: Sustainability Management."
Business briefings: Sustainability Management
*2 Unincorporated JVs = unincorporated joint ventures.
*3 GHG emissions after deducting emissions absorbed and offset, as well as reduction contributions achieved through business activities, from the Company's own emissions.
*4 Emissions in the baseline year (the fiscal year ended March 2020) include GHG emissions of 36 million t-CO2e and the 8 million t-CO2e that is expected to increase from the standard operation of the thermal power generation business that has made reached final investment decisions (FID) by the end of March 2020.
GHG Emissions
Mitsui has carried out GHG emissions surveys in Japan since the fiscal year ended March 2006, and overseas since the fiscal year ended March 2009. Previously, we disclosed Scope 1 and 2 GHG emissions under the GHG Protocol*1 control standards*2. Since the fiscal year ended March 2020, we have additionally disclosed Scope 3, Category 15 (indirect emissions associated with investments), which covers emissions from investments in energy, mineral, and metal resources as well as thermal power generation business not included in Scopes 1 and 2, and other affiliated company business areas that fall under Scopes 1 and 2. Furthermore, since the fiscal year ended March 2024, we have expanded disclosure to include all applicable Scope 3 categories. Moreover, we have enhanced the scope of disclosures to promote continuous reviews of our portfolio in response to stakeholders' wishes and in consideration of our risk tolerance to climate change, which also takes into account Mitsui's strategy of using our wide range of business activities to take on the challenge of new opportunities in an agile way. The Ruwais LNG Project in the UAE reached final investment decision status in July 2024, is a low-carbon LNG business that features measures to reduce GHG emissions at the LNG production stage by employing electric motors instead of conventional gas turbines for liquefaction plants and utilizing clean power. Together, they contribute to making a sustainable transition to a decarbonized society in addition to providing a long-term stable earnings base.
*1 The GHG Protocol is a GHG emissions calculation and reporting standard formulated through an initiative led by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD).
*2 Coverage: Head Office and branches and offices in Japan, all consolidated subsidiaries (100%), and unincorporated joint ventures.
GHG emission reduction results/outlook
Please scroll horizontally to look at table below.
(Million t-CO2e)
| Targets | Boundary | FY March 2020 (Baseline year) |
FY March 2024 | FY March 2025 | FY March 2026 | FY March 2030 | 2050 vision |
|---|---|---|---|---|---|---|---|
| Actual | Forecast*1 (Underlined figures are Med.-term targets) |
||||||
| Halve GHG Impact by 2030 | Scope 1 and 2, and Scope 3 Category 15 (Investments) | 36 | 34 | 29 | 29 | 31 | Net zero |
| Reduction Contribution, absorption/fixed amount | ▲2 | ▲5 | ▲4 | ▲5 | ▲14 | ||
| GHG Impact | 34 | 29 | 25 | 24 | 17 | ||
| Progress from baseline year | 100% | 86% | 74% | 70% | 50% | ||
| Reduce Gross GHG emissions by 30% by 2030 | Scope 1 and 2, and Scope 3 Category 15 (Investments) | 36 | 34 | 29 | 29 | 31 | Net zero |
| Baseline year emissions*1 | 44 | ||||||
| Progress from baseline year*2 | - | 78% | 66% | 66% | 70% | ||
| Halve GHG emissions by 2030 | Mitsui and its consolidated Scope1 and 2 | 0.8 | 0.6 | 0.6 | 0.7 | 0.4 | Net zero |
| Progress from baseline year | 100% | 79% | 77% | 82% | 50% | ||
| Increase ratio of renewable energy to over 30% by 2030 | Equity share of power generation capacity | 14% | 29% | 35% | 34% |
Above 30% |
|
*1 Emissions in the baseline year (the fiscal year ended March 2020) include the expected increase in emissions from standard operation of thermal power generation business that have made reached final investment decisions (FID).
*2 Progress from the baseline emissions (44 million t-CO2e)
GHG Impact refers to the amount of our emissions minus the emissions absorbed and offset, and the GHG Reduction Contribution we achieved through our business activities. We not only focus on reducing our own emissions, but also on contributing to the transition to a decarbonized society through our business activities. Going forward, we will accelerate our company-wide initiatives by setting specific goals, including our Reduction Contribution.
Net-zero emissions in 2050 means to reduce our emissions to effectively zero by subtracting only the emissions absorbed and offset from our emissions. The Reduction Contribution is not included in our Vision for 2050, but we will continue to actively contribute to GHG emissions reductions for society as a whole through our business.
We promote emission reduction (Reduction) and Reduction Contribution (Opportunity & Transition) in various ways, taking advantage of the cross-industrial business structure that only a global investment and trading company can offer.
Path to Gross GHG Emissions 30% Reduction by 2030 and Achieving Net-zero Emissions
We have established a new Gross GHG emissions 30% reduction target for the year 2030. In addition to our existing GHG Impact target, we have introduced an interim target that excludes the Reduction Contribution from avoided emissions. The baseline for this new target is set at 44 million tons of total GHG emissions for the fiscal year ended March 2020, which includes emissions from power generation business that had reached Final Investment Decision (FID) by that time. The fiscal year ended March 2026, already reached a level equivalent to 30% reduction through the divestment of assets such as thermal power generation facilities. We remain committed to maintaining this level of reduction and aim to achieve a 30% reduction by 2030. Furthermore, the renewable energy ratio reached 34% in the fiscal year ended March 2026, and we will continue to promote initiatives toward achieving the 30% target set for 2030.

Reduction Contribution and Absorption
The Reduction Contribution is a quantification from a lifecycle assessment perspective of the amount of GHG emissions (Scopes 1 and 2) by third parties that were reduced and avoided by providing products and services that help to reduce GHG emissions in society through our business, compared to the amount that would have been emitted if existing products and services had been provided (baseline). The GHG Reduction Contribution is calculated with reference to the guidelines of the World Business Council for Sustainable Development (WBCSD) and the Institute of Life Cycle Assessment, Japan, etc. However, since there are no unified calculation rules at this time, we will continue to review the calculation method and disclosure as appropriate, based on international discussions and industry trends. The actual result for the fiscal year ended March 31, 2026 is 4,937 thousand tons in total (including Absorption Amount). The breakdown and calculation formula are as follows.
In calculating the Reduction Contribution, we use actual results and publicly available information to the extent possible. However, in cases where obtaining such information is difficult, we make our own assumptions and establish scenarios to the extent reasonable for our calculations.
Reduction Contribution
Please scroll horizontally to look at table below.
| Evaluation Target | FY March 2026 | Baseline | Formula |
|---|---|---|---|
| Renewable Energy | 3,252 thousand tons | Average energy mix of each country |
|
| Emissions Credits | 603 thousand tons | Before project implementation |
|
| Next-Generation Fuels | 505 thousand tons | Before project implementation |
|
Absorption Amount
Please scroll horizontally to look at table below.
| Evaluation Target | FY March 2026 | Baseline | Formula |
|---|---|---|---|
| Forests | 576 thousand tons | Before project implementation |
|
GHG emissions (Scope 3) results
Please refer to the link below for our GHG Emissions (Scope3) data.
Initiatives to Reduce GHG Emissions in the Value Chain
Scope 3 represents other companies' emissions and requires initiatives throughout the entire value chain. Together with our partners and customers, Mitsui is advancing initiatives in every industry in our broad range of businesses, from upstream to downstream, to cut emissions throughout society.
Examples of Initiatives to Reduce GHG Emissions
- Segments
Steel Production Value Chain
Mining & procurement
Introduction and sale of low-carbon mining machinery
Introduction of renewable energy and next-generation fuel in mining operations
Transportation
Supply of next-generation marine fuel*
Introducing next-gen equipment to improve marine fuel efficiency
— We Tech Solutions
Production
Low-carbon iron ore pelletizing process
— Binding Solutions
Direct reduced iron production
— JV with Kobe Steel, Ltd.
Electric furnace steel production & scrap supply
— Siam Yamato Steel, MTC, Sims, MM & Kenzai Corporation
* Methanol, ammonia, bio bunker fuel etc.
Gas Value Chain
Natural gas production & liquefacation
Assessing and pursuing introduction of CCS
— Cameron LNG/Hackberry CS, Tangguh LNG UCC Project, Arthit CCS
Supplying low-carbon energy
— Low-carbon ammonia: Blue Point Number One, UAE Low-carbon Ammonia, Terreva, Bio methanol*3: Fairway Methanol
Assessing & introducing electrification/green energy supply at liquefaction plants, etc.
— Ruwais LNG, Cameron LNG
Producing CCU methanol*4 methanol
— Fairway Methanol
Transportation & storage
Optimization of ship fuel efficiency
Ammonia FSRU*1
Advanced pipeline repair technology to prevent GHG leakage
— STATS
Sale, usage, recovery
Provision of CCSaaS*2
— Malaysia CCS, JALMIMI/Assessing commerciality at Angel CCS
Pursing development and introduction of CO2 vessels
— Liquefied CO2 transportation by vessels to Malaysia
High-efficiency gas-fired power plant operations
*1 Floating storage and regasification unit
*2 A business providing customers with Carbon Capture and Storage as a Service
*3 Methanol derived from RNG
*4 Carbon capture utilization for methanol production and sales
Automotive Value Chain
Production, assembly, sales
ZEV* manufacturing & sales
— EKA, CaetanoBus, Letenda, RIVER
Parts production & sales for EVs with a focus on lightweight design
— Gestamp
Battery system production for electric mobility
— Forsee Power
Production & sale of high-pressure hydrogen tanks
— Hexagon Purus
Stable supply of battery raw materials
Material processing for EV motors
— EMS, TMS, PMS, Steel Technologies
ZEV* demand creation/solution provision
— Edmonton Airport ZEV adoption
Utilization
Hydrogen station
— FirstElement Fuel
EV charging system development & supply
— The Mobility House
Next-gen fuel production
— Galp/HVO
Production & sale of biodiesel fuel solution equipment
— Optimus
Large fuel-cell vehicle green hydrogen supply
— Hiringa
EV commercial vehicle fleet management
— Penske Truck Leasing
Green hydrogen production
— Lhyfe, Norwegian Hydrogen
EV and battery operating lease provider
— NEoT Capital
Recycling
Metals (ferrous & nonferrous) recycling
— MTC, Sims, MM & Kenzai Corporation
Lithium-ion battery recycling
Tire recycling
— Penske Truck Leasing, MBKal Mining Tire Recycling
Heavy commercial vehicle redistribution business
— T&M
* Zero Emission Vehicles such as EVs and FCVs that emit no CO2 or other GHG when running
Internal Carbon Pricing System
At Mitsui, we introduced the internal carbon pricing system in April 2020 to improve the medium to long-term resilience of businesses emitting large volumes of GHG, and to encourage the development of businesses that are effective at reducing our, and society's, GHG emissions. Regarding new business projects, in projects with potential risks or opportunities from GHG regulations, etc., we have added analysis of the potential impact of a 2°C and 1.5°C scenario to the project screening factors, as well as the adequacy of countermeasures in the event these risks are realized. We are also using the internal carbon pricing system to assess risks in existing businesses. The pricing is based on definitions and prices published by the IEA and other external organizations, taking into account the location and time horizon of the assets. Over the period through 2050. Under the 2°C scenario, we apply prices of approximately 200 USD/ton for developed countries and approximately 50-160 USD/ton for other regions. Under the 1.5°C scenario, we apply prices of approximately 250 USD/ton for developed countries and generally 50-200 USD/ton for other regions.
Other Environmental Indicators/Targets
In Medium-term Management Plan 2029, Mitsui has identified "Global Energy Transformation 2.0 (GET 2.0)" as one of its key strategic initiatives. As of May 2026, we plan to increase invested capital by approximately 690 billion yen, primarily through investments in businesses that contribute to the realization of a decarbonized society, including clean technologies.
Collaborating with Stakeholders
Participation in Initiatives
As a responsible global company, we are advancing and expanding our response to climate change by participating in initiatives based on international frameworks and wide-ranging partnerships through industry organizations in Japan. In our international initiatives, we signed the United Nations Global Compact in 2004 and declared our support. We also invest in the Human Rights Due Diligence Subcommittee of the Global Compact Network Japan, among other activities. Furthermore, to comply with the Paris Agreement and achieve medium- to long-term targets for reducing greenhouse gas emissions of national governments including Japan, we comply with environmental laws and regulations such as the Energy Conservation Law. We are also actively involved in the formulation and design of government-led policies and programs such as the GX Future League, etc. Our decision to invest in each initiative is made once we have confirmed that it is compatible with our basic policy and initiatives concerning climate change, and we will disclose information appropriately to our stakeholders.
TCFD (Task Force on Climate-related Financial Disclosures)
CDP (Climate Change)
Maersk Mc-Kinney Moller Center for Zero Carbon Shipping
International Iron Metallics Association
ASI (Aluminium Stewardship Initiative)
The Copper Mark
Battery Association for Supply Chain
Keidanren (Japan Business Federation)
Japan Foreign Trade Council
GX Future Consortium / GX Future League
Japan Hydrogen Association
Forest Stewardship Council® (FSC®)
SGEC/PEFC
Carbon Recycling Fund Institute
The Institute of Applied Energy, Society of Anthropogenic Carbon Cycle Technology
Clean Fuel Ammonia Association
The Oil and Gas Decarbonization Charter (OGDC)
Carbon Measures Association (CMA)
Japan CDR Coalition
Coalition for LNG Emission Abatement toward Net-zero (CLEAN)
Initiatives
Our Medium-term Management Plan and Environmental Policy both call for action on climate change, and we are promoting initiatives to reduce our environmental impact through dialogue with suppliers and other business partners along the value chains in which we are involved; the aim is to achieve both economic development and a response to climate change. In addition to renewable energy and modal shift businesses, we are also working to expand and promote various businesses and technologies that contribute to the reduction of CO2 emissions and improvement in energy consumption efficiency.
Making Energy Use Carbon-Neutral across All Business Locations in Japan (Using J-Credits)
We offset the CO2 emitted from the use of energy, at our Head Office, all branches and offices in Japan, and training centers, by applying emissions credits (J-Credits) generated by Konan Utility and a company in which we have invested.
Renewable Energy
- Digital & Infrastructure Solutions Business Unit
In our power generation business we intend to lower the share of coal-fired power in our equity share of power generation capacity, and increase the renewable energy ratio (including hydropower) to 30% by 2030. As of March 31, 2026, renewable energy, including hydropower, accounted for approximately 34% of Mitsui's equity share of power generation capacity of 9.43 GW.
Power Generation Businesses
Please scroll horizontally to look at table below.
(As of March 31, 2026)
| Energy resources | Net generation capacity (Mitsui's share) (MW)* | Ratio | Target | ||
|---|---|---|---|---|---|
| Natural gas |
5,189 |
55% |
Less than 70% |
||
| Coal |
762 |
8% |
|||
| Oil |
252 |
3% |
|||
| Renewable Energy |
3,222 |
34% |
More than 30% |
||
| breakdown | Solar |
1,165 |
|
|
|
| Hydropower |
816 |
||||
| Wind |
1,222 |
||||
| Solar thermal |
15 |
||||
| Biomass |
2 |
||||
| Geothermal |
2 |
||||
| Total |
9,425 |
100% |
100% |
||
* Including assets under construction
Please refer to the link below for more information.
Investment in India's Large-Scale Renewable Energy Business
- Digital & Infrastructure Solutions Business Unit
Through our wholly owned subsidiary MIT Power India, we are an investor in the development of a large-scale renewable energy business promoted by ReNew Private Limited, the largest renewable energy company in India. The business will consist of three newly built wind farms and one solar power plant (plus a battery storage farm) with a total installed capacity exceeding 1GW. The business provides renewable energy-based electricity on a stable basis to Solar Energy Corporation of India Limited (SECI), an entity owned by the Indian Ministry of New & Renewable Energy, based on a 25-year power purchase agreement. Whereas it is difficult for conventional renewable energy projects to commit stable electricity supply due to the intermittent nature of winds and solar irradiation, this business commits electricity supply on a round-the-clock basis from a portfolio consisting of multiple wind and solar facilities plus battery storage farms. This "round-the-clock scheme" is the first of its kind in India. Mitsui will contribute to the smooth operation of the business by using its accumulated knowledge of the electric power business in Japan and other countries.
India, the third-largest emitter of GHGs, has set a target to achieve net-zero GHG emissions and announced that it will raise its non-fossil energy capacity to 500 GW by 2030. This round-the-clock scheme project, enabling electricity supply with 100% renewables, is in line with the Indian Government's policy and is expected to play an important role in the future to replace the coal-fired power plants currently represent over 40% of India's installed capacity. Renewable energy is a business field that is likely to keep expanding in India, where continuous population and GDP growth are expected. Through this business, we will contribute to solving the power shortage in India and encourage decarbonization.
Next-generation Fuels
Low-carbon Ammonia
We are working to build a value chain for low-carbon ammonia by leveraging our strengths as a diversified global investment and trading company with touchpoints across a wide range of industries.
Low-carbon Ammonia Production Business (UAE)
- Integrated Energy Solutions Business Unit
- Basic Materials Business Unit
We have begun construction of an ammonia production facility in the United Arab Emirates, in partnership with TA'ZIZ (backed by Abu Dhabi National Oil Company (ADNOC). The partnership also includes Fertiglobe (a manufacturer and exporter of urea and ammonia), and GS Energy (a Korean energy-related business). The plant is being developed within the TA'ZIZ Development Area in the Ruwais Industrial Complex of the United Arab Emirates, with the aim of producing 1 million tons per year of ammonia with lower CO2 emissions compared to conventional methods. In addition, by installing additional facilities to capture and store CO2 emitted during production, we aim to manufacture low-carbon ammonia while further reducing overall CO2 emissions.Ammonia is attracting attention as a zero-emission fuel that does not emit CO2 when burned, and also as a carrier for hydrogen. A certain portion of the ammonia produced will be procured and supplied mainly to Japan and other parts of Asia. In addition to fuel applications, it will be used as a feedstock for chemicals and fertilizers, contributing to decarbonization across society, including other industrial sectors.
In the energy sector, we have been developing and managing liquified natural gas business with ADNOC in the United Arab Emirates since the 1970s. We also have approximately 50 years of experience in the ammonia business and are the largest Japanese importer of ammonia. By integrating the cross-sectoral expertise and partnerships we have cultivated through existing businesses, we will advance the development of a low-carbon ammonia supply chain that responds to the decarbonization needs of countries and regions.
Low-carbon Ammonia Production Project (US)
- Basic Materials Business Unit
- Integrated Energy Solutions Business Unit
Mitsui has made a final investment decision to participate in the Blue Point low-carbon ammonia production project in the United States, together with CF Industries Holdings, Inc. (CF Industries) and JERA Co., Inc. (JERA).
The plant will be constructed in the state of Louisiana in partnership with CF Industries, the world's largest ammonia producer, and JERA, Japan's largest power generation operator. It will be one of the world's largest low-carbon ammonia production facilities, with an annual production capacity of approximately 1.4 million tons.
The low-carbon ammonia produced will be procured by each shareholder, and we plan to supply our share mainly to Europe and Asia. The business is expected to capture and store 2.3 million tons of CO2 annually, reducing CO2 emissions from the production process by more than 95%.
As a priority area within "Global Energy Transformation 2.0," one of the Key Strategic Initiatives under Medium-term Management Plan 2029, we aim to contribute to a wide range of low-carbon industries through the production and sale of low-carbon ammonia, which is attracting attention as a next-generation fuel in addition to its conventional use as a feedstock for fertilizers and chemicals.
Biofuels
Renewable Diesel and SAF Production in Portugal
- Integrated Energy Solutions Business Unit
We are jointly promoting the production of renewable diesel (hydrotreated vegetable oil, HVO) and sustainable aviation fuel (SAF) with Galp SGPS, S.A. (Galp), Portugal's largest energy company, at the Sines Refinery in Portugal owned by Galp.
In Europe, policies to introduce biofuels in the transportation sector are being heavily promoted as part of the trend toward energy transition for the purpose of decarbonization. In this business, HVO, which is produced from used cooking oil and animal and vegetable fats, can be introduced as an alternative biofuel to diesel for internal combustion engine vehicles such as buses and trucks, and SAF as an alternative jet fuel for aircraft.
As part of efforts to build a portfolio of next-generation fuel businesses, we will invest in the biofuels production business, and will simultaneously take on the responsibility of procuring raw materials mainly from Asia and developing product sales outlets in Europe, where there is a supply-demand gap. The aim is to fulfilling functions throughout the value chain. Through our participation in this business, we will help to solve the urgent and complex global issue of addressing climate change through cross-industry initiatives.
Hydrogen-related
- Integrated Energy Solutions Business Unit
When hydrogen is consumed, it generates no greenhouse gases or environmentally harmful substances. Hydrogen is a focus of attention around the world as a clean fuel that does not generate an environmental burden. With our Integrated Energy Solutions Business Unit at the core, we engage in cross-company collaboration utilizing the networks and knowledge of each business segment, working on our hydrogen business in a way that demonstrates our comprehensive strength. We regard the hydrogen business as an effective approach to achieve our net-zero emissions goal, and will work together with our stakeholders to build necessary social infrastructure and create profitable businesses.
Green Hydrogen Production Business in Western Australia
- Integrated Energy Solutions Business Unit
Green hydrogen, which is produced from renewable energy, will play a pivotal role in industrial decarbonization and holds significant potential as a clean energy source. This is because renewable hydrogen emits no CO2 in the production and burning process and can be used in various industries. We are participating in a green hydrogen production business in the Pilbara region of Western Australia. In this business, a joint venture between major French energy player Engie S.A. and Mitsui will deploy a 10-MW electrolyzer powered by 18 MW of solar PV to generate and supply renewable hydrogen for an existing ammonia production facility owned by Yara Pilbara Fertiliser Pty Ltd (YPF). YPF is a wholly owned subsidiary of Yara International ASA, one of the world's largest producers of nitrogen-based mineral fertilizers, and will use the renewable hydrogen as a zero-carbon feedstock for ammonia production.
Green Hydrogen Production Business in Europe
- Performance Materials Business Unit
In April 2022, we invested in two green hydrogen producers in Europe: Lhyfe SA and Norwegian Hydrogen AS (NH). Lhyfe was established in 2017 and started its first commercial wind power-derived hydrogen production plant in 2021. Currently, Lhyfe has a 2.3-GW green hydrogen project pipeline for both industry and mobility, and aims to ensure the launch of green hydrogen production projects in a timely manner. NH was established in 2020 and has a handful of projects in the pipeline in Scandinavia. NH's first renewable hydrogen production plants in Norway started commercial operation in 2024. Through our equity participation in Lhyfe and NH working on local production for local consumption, we will strengthen our partnership with these companies and expand our existing hydrogen-related business. By establishing a strong presence in the European hydrogen market, we will contribute to and accelerate the reduction of GHG emissions with development of green hydrogen in Europe for the future.
Decarbonization Solutions for the Mobility Sector
- • Performance Materials Business Unit
We have been a shareholder in Hexagon Composites ASA, the world's biggest manufacturer of carbon fiber-reinforced high-pressure gas containers (such as those used for compressed natural gas), since 2016, and have collaborated with them on various business initiatives.
We have also invested in its affiliate, Hexagon Purus ("Purus) a company engaged in manufacturing of compressed hydrogen tanks, as well as in the design of hydrogen distribution systems utilizing such tanks and the integration of commercial vehicles. Purus possesses expertise in these areas and operates businesses covering compressed hydrogen tanks used for onboard fuel in fuel cell electric vehicles (FCEVs) and for land-based hydrogen transportation, as well as related systems, battery systems, and vehicle integration. Through this partnership, we have been expanding the scope of this collaboration in anticipation of the introduction of commercial FCEVs, including trucks and buses, in Europe, the United States, and other global markets.
The investment will enable us to tap into rising demand for the transportation of locally produced hydrogen for local consumption. In particular, there has been growing demand for distribution modules and trailers used in hydrogen transportation and for mobile hydrogen refuelers, which is a key business area for Purus; sales in this area are expanding, mainly in Europe.
We will help to meet the company's increasing need for growth funds, including funds for investment in capacity expansion in readiness for growth in hydrogen demand resulting from the future introduction of regulations and incentives. Moreover, through this strategic alliance, we will create new business opportunities in the electrification of mobility by leveraging Mitsui's business and customer base, support enhancement of Purus's corporate value, and contribute to the achievement of zero emissions not only for commercial vehicles, but also for other mobility industries such as maritime shipping, rail transportation, and aviation.
e-Methanol
e-Methanol Production and Sales Business in Denmark
- Basic Materials Business Unit
- Integrated Energy Solutions Business Unit
Producing e-methanol at the plant operated by Solar Park Kasso ApS, a joint venture in Denmark between Mitsui and European Energy A/S. e-Methanol is a synthetic methanol produced using renewable hydrogen and CO2 as feedstocks. It is gaining attention as a next-generation synthetic fuel capable of significantly reducing environmental impact. The project marked the world's first bunkering of e-methanol produced at a commercial-scale facility through supplying e-methanol produced at this facility as next-generation marine fuel to the Laura Maersk, operated by A.P. Moller – Maersk In May 2025.
Through this operating company, we are contributing not only to the low-carbon marine fuels but also to the low-carbon raw materials for plastics by supplying e-methanol to the LEGO Group and Novo Nordisk.
Electricity Resource Development and Energy Management
Distributed Solar Power Generation Business
- Digital & Infrastructure Solutions Business Unit
We have established Forefront Power, a wholly owned subsidiary based in California, the center of the U.S. clean energy market, through the acquisition of the Commercial & Industrial Division (C&I) of SunEdison in 2017. Today, Forefront Power provides clean energy services across the United States and Mexico, primarily serving public sector customers such as schools, as well as commercial and industrial customers. The company primarily develops and operates "Onsite Solar" projects, which supply electricity generated from solar power facilities installed at customer sites, as well as "Community Solar" projects, which supply electricity from solar facilities installed outside customer sites to multiple customers. In addition, Forefront Power provides energy storage systems, EV charging infrastructure, advisory services supporting GHG reduction and energy procurement optimization, and energy management services. Through these initiatives, the company is expanding its distributed energy solutions business to address customers' evolving energy and sustainability needs.
Natural Gas-fired Power
- Global LNG Business Unit
- Digital & Infrastructure Solutions Business Unit
Fukushima Gas Power Co., Ltd., our equity accounted investee, has two natural gas-fired power facilities at its Fukushima Natural Gas Power Plant in Soma, Fukushima Prefecture. These have a total power output of 1.18 million kW. The power generation facilities use a gas turbine combined-cycle system with high power generation efficiency. This combination of a gas turbine and a steam turbine generates a lower level of CO2 than coal-fired or gas turbine-only power generation methods.
This business is in line with Fukushima Prefecture's goals of the "introduction of energy with a low environmental impact" and "new urban development" under the Fukushima Innovation Coast Framework. Through promoting this business, Mitsui & Co. will contribute to the economic revitalization in the Hama-dori region of Fukushima prefecture to help in its ongoing recovery from the 2011 earthquake. We will continue to work on the sustainable and stable supply of resources that are essential for social development and the creation of a society that is in harmony with the environment.
EV (Electric Vehicles)
- Mobility Business Unit I
- Digital & Infrastructure Solutions Business Unit
Among the mobility (transportation) areas that we have defined as our new growth areas, we expect electrification (the shift to electric vehicles) to be particularly promising. In Europe, where the introduction of EVs is gathering momentum, we are building a comprehensive business model that supports the changeover to EVs, including infrastructure, and are expanding it in other regions as well.
We are organically linking several companies in which we have an interest in order to build a new business model that can provide comprehensive solutions. These include EV makers (CaetanoBus-Fabricação De Carroçarias S.A, Letenda Inc.), EV and battery operating lease provider (NEoT Capital SAS), and an energy management company that uses EV batteries (The Mobility House AG). For example, if a city considers switching its fixed-route buses to EV, we would like to help the city speed up its changeover to electric vehicles. In concrete terms, we can offer a comprehensive range of services including EV bus supply, battery leasing, and energy management. Furthermore, in future, we are also considering businesses involved in the reuse and re-leasing of used batteries. We will begin these initiatives in Europe and the United States, and then expand them to Asia.
ZEV (Zero-Emission Vehicle) Business
- Mobility Business Unit I
Caetanobus - Fabricacao de Carrocarias, S.A. (CaetanoBus) of Portugal, in which we have invested, has been developing electric buses since 2010. It has introduced EV ramp buses for airport passenger transportation, EV city buses and FC (fuel cell) city buses, mainly in Europe, to the market in stages, providing optimal solutions tailored to operations for a decarbonized society. In India, we have invested in Pinnacle Mobility Solutions Private Limited (Pinnacle Mobility), which is developing an electric bus and electric light commercial vehicle manufacturing and sales business under the EKA brand, and World of River Limited, which is developing an electric motorcycle manufacturing and sales business under the River brand since 2023. Pinnacle Mobility has been steadily expanding its business both in manufacturing and sales. Since commencing full-scale commercial production and sales in 2024, the company has continued to grow up by securing its order backlog exceeding 10,000 electric buses, primarily for major cities in India, between 2025 and 2026, while also expanding its presence in overseas markets.
River handles the production of an electric scooter developed from its production model and tailored for the Indian market in collaboration with Yamaha Motor Co., Ltd. The electric scooter has been available mainly in urban areas across India since 2026, and features a "Stylish & Cool" exterior design theme fitting customers leading an active daily lifestyle. With both companies, we will further promote the electrification and decarbonization of mobility and contribute to the creation of a society in harmony with the environment.
In addition, we invested in Kite Mobility Inc. ("Kite"), a Canada-based company offering electric vehicle ("EV") sharing services for condominium residents, in 2025. Kite stations EVs in residential parking facilities, providing residents with on-demand access to EVs. By alleviating parking constraints in urban areas and offering new mobility options, Kite enables both reduced environmental impact and enhanced convenience.

360° business innovation: FULL CHARGE AHEAD: Assembling an EV value chain for the smart-city era
Biodiesel Fuel Solution Equipment Manufacturing and Sales Business
- Mobility Business Unit I
We have invested in Optimus Technologies, Inc. (Optimus Technologies) a US company that has developed its Vector System technology. This is an innovative and practical way to reduce carbon emissions in heavy-duty diesel operations. This system enables internal combustion engine vehicles to run on 100% biodiesel fuel (BDF). Although it will likely enter use as a renewable fuel alternative to diesel oil for decarbonization, given that the use of BDF in high concentrations increases the risk of vehicle malfunctions, BDF has conventionally been mixed with diesel fuel to the extent of 5-20%, limiting its decarbonization effect. The use of BDF in 100% concentration with Optimus Technologies' product helps to significantly reduce CO2 emissions, can be used in cold regions, and can switch to running on diesel fuel without vehicle modification. In addition, the relatively small impact on vehicle payload and the immediate reduction in emissions give it an advantage over battery-electric and hydrogen fuel-cell trucks. Optimus Technologies also provides comprehensive solutions to help customers achieve smooth decarbonization, including telematics, fleet management support, CO2 reduction reports, and leasing of BDF supply stations. In cooperation with Optimus Technologies, we will promote the introduction of its products and technologies.
Industrial Operations & Automation
- Corporate Development Business Unit
+Automation Inc. (+A), our affiliated company, is a logistics robotics services company that resolve issues that warehouse operators face, such as the growing complexity of operations due to diversified consumer needs and labor shortages. They do this by leveraging Mitsui's global network-based robot procurement capabilities and the knowledge of its logistics subsidiaries—JA Mitsui Leasing Group's finance, GLP Japan Inc.'s customer network as a leading logistics real estate company, and Toyota Industries Corporation's engineering expertise as a global logistics solutions provider. With the number of robots installed having exceeded 7,400 as of May 2026, +A is accelerating its service deployment. It is working to add further value by providing "+Hub," a proprietary warehouse execution system that enables linkage of a variety of robots, material handling equipment and logistics systems. Nowadays, since it is normal for consumers to have anything they could ever want delivered directly to them, building sustainable logistics services is essential. Through "Robotics as a Service (RaaS)," a standardized subscription-type service that provides operational design, system development, and utilization support that is tailored to customers' needs, +A is engaged in bringing satisfaction and joy to people working on the front lines of logistics while strengthening the logistics industry.
Air Quality
Investment in the CCS Business
- Global LNG Business Unit
- Integrated Energy Solutions Business Unit
We are focusing on launching and promoting the CCS as a Service (CCSaaS) business as a core component of our next-generation E&P business, in addition to reducing CO2 emissions from our own assets. We position the CCS/CCSaaS business, which leverages our expertise in the upstream oil and gas business and extensive business network, as one of our energy solution areas. Leveraging our experience in developing CO2 capture and storage projects in leading markets such as Europe, we are working to develop CCS businesses globally. In the Asia Pacific Region, including Japan, we together with The Kansai Electric Power Co., Inc., Kyushu Electric Power Co., Inc., Cosmo Oil Co., Ltd., The Chugoku Electric Power Co., Inc., Electric Power Development Co., Ltd., Crasus Chemical Inc., and Mitsubishi UBE Cement Corporation, have won a bid to conduct engineering design work for the CCS project southern Offshore Peninsular Malaysia, following a public call for bids by the Japan Organization for Metals and Energy Security (JOGMEC) to select Advanced CCS Projects for FY2025. In Malaysia, we have signed a contract with Petronas, an oil company in Malaysia, and TotalEnergies in France for the joint development of CO2 storage sites. The project targets maturing gas fields with declining reserves and surrounding subsurface formations offshore the Malay Peninsula, including a development plan based on the technical evaluation of CO2 underground storage, and optimization of logistics that includes transportation by liquefied CO2 ships and design of port facilities.
In Thailand, we, through MOECO Thailand Co., Ltd., our consolidated subsidiary, have joined a Carbon Capture and Storage (CCS) project at the Arthit gas field in the Gulf of Thailand, operated by Thailand's PTT Exploration and Production (PTTEP). MOECO Thailand Co., Ltd. holds a 4.7619% share in the project. This is the first CCS initiative in Thailand.
In Denmark, together with TotalEnergies and Nordsøfonden, we successfully bid for a potential CO2 storage site in the North Sea and obtained an exploration permit for CO2 storage.
Indonesia's Tangguh Ubadari, CCUS, Compression (UCC) Project reached Final Investment Decision in late 2024. It is an initiative contributing to the transition to a decarbonized society in a sustainable manner. It also contributes to helping to maintain a stable energy supply to Asian countries, including Japan, and is Indonesia's first at-scale LNG project.
We are working on a joint study with Sempra Infrastructure in US, Total Energies in France, and Mitsubishi Corporation, who are partners in the Cameron Liquefied Natural Gas (LNG) Project, aiming to commercialize CCS in Louisiana, USA, through Hackberry Carbon Sequestration, LLC (100% subsidiary of Sempra Infrastructure). This project mainly involves storing CO2 emitted from the Cameron LNG Project in underground areas near the project, which will help to reduce greenhouse gas emissions during LNG production. In addition, this study will also consider the possibility of receiving CO2 emissions from surrounding industries and storing them underground. Prior to the start of the study, in August 2021, we applied to the US Environmental Protection Agency for permits for well drilling and CO2 storage of up to 2 million tons per year at the CCS project site.
We will continue to contribute to reducing CO2 emissions from each company through CCS and the supply of low-carbon LNG.
CCU — Producing Methanol in the US that Uses CO2 Effectively
- Basic Materials Business Unit
Our equity accounted investee, Fairway Methanol LLC, is producing methanol by using carbon dioxide (CO2) emitted from 3rd party facilities adjacent to the joint venture's facility. Fairway Methanol captures 180 thousand tons of CO2 and produces 130 thousand tons of low-carbon methanol per year, which enabled its annual production capacity to 1.63 million tons per year. This additional methanol production, using industry-derived CO2, is one of the carbon capture and utilization (CCU) projects that Mitsui has undertaken. The concept behind these projects considers CO2 as a resource that can be reused as a raw material and fuel, thus realizing carbon recycling and helping to reduce CO2 emissions into the atmosphere. This project provides Mitsui with another low-carbon solution in its methanol business portfolio, following the bio-methanol (mass-balance basis) production at Fairway Methanol and the e-methanol production at Solar Park Kasso, Denmark.
Materials
Certifications
- Performance Materials Business Unit
- Integrated Energy Solutions Business Unit
Green Buildings
We aim to invest in environmentally friendly buildings and make energy use in our existing buildings more efficient through environmental and energy-saving measures in order to build a portfolio of properties that have a low environmental impact.
Otemachi One (Mitsui & CO. Building and Otemachi One Tower)
DBJ Green Building Certification is a certification system that evaluates environmentally and socially conscious real estate. Otemachi One (Mitsui & CO. Building and Otemachi One Tower), an office building owned by our company and others, has been certified as "one of Japan's top-class, superior buildings exhibiting excellent environmental and social awareness" under DBJ Green Building Certification system.
Japan Logistics Fund, Inc.
- Corporate Development Business Unit
Japan Logistics Fund, Inc. (JLF), a listed REIT is operated by our subsidiary Mitsui & Co., Logistics Partners Ltd., owns and manages 55 logistics facilities (as of March 2026).
With regard to JLF, we actively promote ESG initiatives in the management of logistics facilities. We believe that obtaining objective evaluations and certifications will enable us to understand the positioning and the challenges of JLF's ESG initiatives, and enable us to further strengthen our efforts. We are therefore working to obtain Green Building Certification and improve the results in third-party evaluations.
Acquiring External Certification
GRESB Real Estate Assessment
GRESB is an annual benchmarking assessment, which measures the ESG integration of real estate companies and funds. In the 2025 assessment, Japan Logistics Fund, Inc. received the highest rating of five stars. In addition, the company received a "Green Star" for the eight consecutive year in both the "Management Component," which evaluates the company's policies and organizational structure for ESG promotion, and the "Performance Component," which evaluates the company's environmental performance and tenant engagement at owned properties.
SBT for SME Certification
JLF has established Scope 1 and 2 greenhouse gas emission reduction targets of 42% below the FY March 2021 level by FY March 2030 and net-zero by FY March 2050. Of these, the greenhouse gas emission reduction targets by FY March 2030 were recognized by the SBT Initiative, an international organization, as following the goals of the Paris Agreement that "aims to keep the global average temperature well below 2°C above pre-industrial levels and pursue efforts to limit global warming to 1.5°C." JLF has received the Science-Based Targets (SBT) for SME certification from the international SBT initiative in 2022.
Green Finance Framework Assessment
We have established the Green Finance Framework, with the aim of further promoting sustainability-related initiatives through green finance and strengthening our fund-raising base by expanding the investor base interested in ESG investment. JLF has obtained a Green 1(F) (highest for JCR Green Finance Evaluation) rating for the competence of its Green Finance Framework from Japan Credit Rating Agency, Ltd. (JCR)
Acquisition of Green Building Certifications
JLF aims to build a portfolio with low environmental impact by investing in properties that have a small environmental footprint, and improve energy efficiency through environmental and energy conservation measures in the management of its properties. In addition, when redeveloping owned properties (OBR), the company intends to obtain Green Building Certification after the redevelopment.
Percentage of Portfolio with Green Building Certification (as of August 31, 2025)
Please scroll horizontally to look at table below.
| Type of certification | Number of properties | Leasable area (m2) | Percentage of portfolio (by area) |
|---|---|---|---|
| CASBEE Certification for Real Estate*1 | 50 | 1,494,497.34 | 98.2% |
| BELS Certification*2 | 25 | 716,850.89 | 47.1% |
| Percentage of portfolio with Green Building Certification | 51 | 1,505,152.80 | 98.9% |
As some properties have multiple certifications, the total of the figures for each certification type does not equal the figure for the "Percentage of portfolio with Green Building Certification."
*1 CASBEE is a method designed to comprehensively assess the environmental efficiency of buildings, and is promoted throughout Japan under the guidance of the Ministry of Land, Infrastructure Transport and Tourism. Certification for CASBEE for Real Estate is a system where third-party institutions examine and certify assessment results prepared in accordance with CASBEE for Real Estate. The certification rating is represented by the number of stars on a four-tier scale from five stars "★★★★★" ("S") to two stars "★★" ("B").
*2 BELS is a third-party certification system in Japan that indicates the energy efficiency of buildings. Since April 2016, the Act on the Improvement of Energy Consumption Performance of Buildings (Building Energy Efficiency Act) requires real estate companies to make efforts to indicate the energy efficiency of buildings. The specific indication method is stipulated in the guidelines for energy efficiency labels of buildings. BELS is evaluated based on the same guidelines, and the assessment result is represented by the number of stars (one star "★" to five stars "★★★★★"); from April 2024, it is shown on a scale of seven levels (Level 0 to 6). A Net-Zero Energy Building (ZEB) is a building that aims for zero energy balance with considerably reduced annual energy consumption by saving as much energy as possible. Ways to save energy include better heat insulation, solar shading, natural energy and high-efficiency equipment, coupled with creating energy by solar power generation (or other energy-generating methods), while maintaining a comfortable environment. In addition, in the BELS certification system, it is possible to obtain certification under four levels (ZEB, Nearly ZEB, ZEB Ready, and ZEB Oriented).
Mirai Corporation
- Corporate Development Business Unit
Mitsui Bussan & Idera Partners, our associated company that manages the assets of listed Real Estate Investment Trust MIRAI Corporation, is promoting sustainability-related measures that include ongoing participation in real estate assessments, as well as green financing, in accordance with our Sustainability Policy.
Acquiring External Certification
GRESB Real Estate Assessment
Listed Real Estate Investment Trust MIRAI Corporation earned three Stars in the GRESB Real Estate Assessment in 2025, based on the relative evaluation of its overall score. MIRAI also earned a "Green Star" in both the "Management Component," which evaluates the company's policies and organizational structure for ESG promotion, and the "Performance Component," which evaluates the company's environmental performance and tenant engagement at owned properties. It was also awarded a "Level A" in GRESB Public Disclosure, which assesses the adequacy of sustainability information disclosure.
Percentage of Environmental Certifications Acquired
The percentage of environmental certifications in the portfolio is as follows.
(As of April 30, 2026)
| Based on gross floor area |
|---|
| 74.2% |
Mirai Corporation has acquired DJB Green Building Certification for 10 properties, CASBEE Certification for Real Estate for 6 properties, and Building-Housing Energy-efficiency Labeling System (BELS) Certification for 1 property.
Forest Sinks and Emission Credits Business
- Integrated Energy Solutions Business Unit
Generation and Sale of Carbon Credits through Regeneration of Native Vegetation
We have invested in Climate Friendly Pty Ltd., a leading nature-based carbon credit developer in Australia. The company operates "carbon farming" businesses that remove and sequester GHG from the atmosphere through a range of approaches, including vegetation regeneration on farms, afforestation, and soil carbon sequestration in agricultural and pastoral lands. By collaborating with local farmers and landowners to generate and sell high-quality carbon credits, the company contributes to the achievement of national and corporate GHG reduction targets In addition to GHG reductions, these activities also deliver co-benefits to the natural environment, such as biodiversity restoration and improvements in soil health. Through our partnership with Climate Friendly, we will promote nature-based climate solutions and contribute to the conservation of local ecosystems and the realization of a global decarbonized society.
Generation and Sale of Forestry-derived J-Credits through Proper Forest Management
Mitsui has been working on the generation and sale of J-Credits (forest J-Credits) by conducting appropriate forest management in Japan as part of our efforts to address the issue of climate change by applying industrial solutions. Since 2019, we have lobbied for regulatory reforms to enable large-scale J-Credit creation using aerial survey data and satellite data, and have commenced commercialization activities by using our company-owned forests across Japan. Currently, we are promoting joint creation projects with several forestry corporations and local governments, and we have started making sales since obtaining credit certification and issuance in 2023. We provide these J-Credits as a way for GHG-emitting companies to meet their offset needs for emissions that cannot be reduced through their own GHG reduction efforts, such as energy-saving devices and the adoption of renewable energy sources, to achieve their carbon-neutrality targets. Moreover, by utilizing the revenue from these J-Credits to manage forests appropriately, we aim to enhance the multifaceted value of regional forestry resources, solve forest management challenges through revitalizing the forestry management business, and help to rebuild local economies. We will continue to actively engage in the creation and sale of credits moving forward.
Financing
Use of Sustainability Linked-Loans
Mitsui uses sustainability linked-loans (SLLs) as part of our efforts to realize a sustainable society. These loans incorporate KPIs related to climate change response, and the financing terms and conditions are subject to change depending on the extent to which these targets are achieved. Through such financing methods, we aim to integrate response to environmental issues into our corporate management and achieve both sustainability and increased corporate value.



