Climate Change

Mitsui regards responding to climate change as one of our most important management challenges and has set out a goal of net-zero emissions as our Vision for 2050. In order to achieve this goal, we are promoting the following three measures – “Reduction,” which promotes  reduction of emissions by improving the portfolio of resource and power generation assets, “Transition,” which aims for a low-carbon society by promoting fuel conversion to LNG, etc. in the medium term, and “Opportunity” which promotes business that leverages the opportunities to address climate change.

In environment-related business, we engage in renewable energy projects, modal shift projects, and the expansion of other business initiatives as well as diffusion of technology that contribute to the reduction of CO2 emissions and improvement in energy consumption efficiency.

Medium-term Management Plan 2023 Actions Graph

* Assumes only reduction contribution attributable to the company in the future


Medium-term Management Plan 2023 Actions

Water Resources

Reflecting the growing interest from a global perspective in the water-related problems, Mitsui is engaging inwater projects, such as tap water supply, sewage treatment plant, power and water desalination and desalination and conveyance which promotes the conservation and the sustainable use of water resources. Furthermore, we support an NGO initiative to provide rainwater storage and treatment facilities to provide safe drinking water in mountainous areas and on remote islands in Bohol Province in the Philippines through the Mitsui & Co. Environment Fund.

Circular Economy

Mitsui is working to realize a circular economy by curbing the resources and energy consumption and waste generation through circulation of resources and products at various stages in economic activities, while aiming to achieve both economic growth and reduction of environmental loads by creating added value through circulation. Our business initiatives include 3R, reusable and biodegradable materials, life cycle extension and reuse, waste reduction and recycle, sharing platform and XaaS.

Environmental Pollution

Environmental Pollution

Mitsui engages in business initiatives that lead to the reduction of water and soil contamination and the reduction of the quantity of chemical substances released into the atmosphere. Mitsui also engages in a research project which develops and operates of an HAB (Harmful Algal Bloom) Early Warning System as joint Project with JICA/researchers.



We promotes business initiatives that lead to conservation of biodiversity through business. In addition, we engage in biodiversity conservation activities at “Mitsui’s Forests,” which we own in 74 locations throughout Japan (approx. 44,000 hectares) and biodiversity conservation activities in cooperation with NGOs

Environmental Performance Data

Mitsui has carried out GHG emissions surveyssince the fiscal year ended March 2006. Reflecting the growing interest towards climate change issues, we have gradually extended the boundary of our GHG emissions and since the fiscal year ended March 2020, we have added Scope 3, Category 15 (indirect emissions associated with investments) in our boundary to grasp the emissions on a global group basis and to carry out initiatives for reduction. Furthermore, we will continue to monitor water risk and explore new initiatives to reduce water consumption, and promote reducing waste, reuse, recycling and appropriate dispose.