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Endeavor to Create a Circular Economy

Carbon Neutral Strategy

Carbon Neutrality Declaration

The Mitsui Chemicals Group believes that, as a chemicals company, we have an important role to play in helping to build a sustainable society that can limit the average global temperature rise to 1.5 degrees Celsius. Therefore, in November 2020, we declared our commitment to become carbon neutral by 2050. We developed a carbon neutral strategy which is centered around the two pillars of (1) reducing our own GHG emissions (Scopes 1 and 2), and (2) maximizing the avoided emissions of our products over their entire life cycle, and have implemented concrete measures that contribute to the transformation of society.

We are considering investing an amount to the scale of 140 billion yen in carbon neutrality by 2030, and we will flexibly invest funds across the entire Group.

Carbon neutrality declaration

The Mitsui Chemicals Group’s Carbon Neutrality Strategy

Strategy (1) Reducing GHG Emissions (Scopes 1 and 2) of the Mitsui Chemicals Group

The Mitsui Chemicals Group aims to reduce its GHG emissions by 40% by fiscal 2030 relative to fiscal 2013 levels to make important progress toward the goal of achieving carbon neutrality by 2050. This is one of our non-financial targets in VISION 2030. To this end, we have made progress toward achieving our FY2030 GHG emissions reduction target by advancing discussions on several initiatives, including: the consolidation of naphtha crackers within the LLP with Idemitsu Kosan Co., Ltd. in the Keiyo area; the installation of ammonia-fueled crackers at our Osaka Works with aid from Green Innovation Fund*; and the promotion of energy efficiency and the introduction of renewable energy.

We will continue to implement low-carbon and decarbonization measures in sequence. By 2050, in addition to implementing the aforementioned measures, we intend to achieve 80% or more of these reductions mainly through the development of new technologies and the transition of our business portfolio—though this presupposes markets, customers, and other aspects of the external environment falling into place or changing. We also plan to move forward with the development and implementation of carbon-negative technologies, such as carbon capture, utilization, and storage (CCUS), to handle the remaining 20%.

Since fiscal 2019, we have implemented an internal carbon pricing (ICP). By adding internal rate of return (IRR) that takes ICP into account (c-IRR) to our investment decision-making, we are discussing the necessity of investments from the perspective of not only economic opportunities but also a risk that environmental impact may increase in the future. As a measure to accelerate our strategy, we revised our ICP from 3,000 yen/tCO2e to 15,000 yen/tCO2e in fiscal 2022.

*Green Innovation Fund:

A fund established by the Japanese government to help achieve carbon neutrality by 2050. It provides long-term support—from research and development through demonstration and social implementation—for companies and other organizations committed to ambitious goals to realize a decarbonized society.

Carbon Neutral Roadmap

Carbon Neutral Roadmap

Measures and Outcomes of the Group

Measures and Outcomes of the Group

Strategy (2) Maximizing Avoided Emissions Through Provision of Our Products

Through our supply of Blue Value™ products that make significant environmental contributions, we aim to maximize GHG emissions avoided over the entire product life cycle. In this way, we intend to help all of society achieve carbon neutrality. We have set a 40% Blue Value™ products sales revenue ratio as one of our non-financial targets in VISION 2030, and we have reflected this in the strategy of each business.

In addition, for some of our Blue Value™ products, we calculate the contribution of avoided emissions under the review of outside experts. By sharing the results of the calculations with our stakeholders, we have continued efforts to make our contributions more visible. In fiscal 2024, we estimated avoided emissions of approximately 4 million tons per year.

Maximizing Avoided Emissions Through Provision of Our Products
Initiative 1: 
Transition to Low-Carbon Feedstock – Fuel Conversion of Naphtha Crackers Using Ammonia

While naphtha crackers are key for a chemicals company, they also are facilities that emit a large amount of GHGs. By switching from methane-based fuel to carbon-free ammonia in naphtha crackers, the Mitsui Chemicals Group aims to bring the amount of CO2 generated in combustion as close to zero as possible and contribute to reduction of GHG emissions across the entire petrochemicals industry.

With Mitsui Chemicals, which has both naphtha cracker and ammonia businesses, acting as a lead company, we are proceeding with demonstration tests in collaboration with Maruzen Petrochemical Co., Ltd., Toyo Engineering Corporation, and Sojitz Machinery Corporation. The research and development period is envisaged to be the 10 years from fiscal 2021 to fiscal 2030, with a goal of completing the demonstration of entirely ammonia-fueled naphtha crackers by 2030. Currently, we have made progress as scheduled toward a goal of developing ammonia burners and test furnaces by 2026. The construction of test furnaces is scheduled to be completed in the latter half of fiscal 2025.

This project has been selected as a demonstration test for development of advanced technologies for naphtha crackers by the Green Innovation Fund program publicly solicited by the New Energy and Industrial Technology Development Organization (NEDO).

ナフサクラッカーの燃料転換~アンモニア活用~
Initiative 2:
Transition to Low-Carbon Raw Materials and Fuels– Building Hydrogen and Ammonia Supply Chains Through Cross-Industry and Regional Collaboration

The Mitsui Chemicals Group has aimed to utilize ammonia as fuels for naphtha crackers. In fact, ammonia is expected to be used in a broad range of applications, including fuels in the field of power generation, for heat utilization in the industrial field, and hydrogen carrier. Jointly with Mitsui & Co., Ltd. and IHI Corporation, we have commenced studies to establish bases for receiving, storing, and supplying ammonia in the Osaka coastal industrial zone, as well as to expand the use of ammonia in the Kansai and Setonaikai regions (announced in August 2023). As part of these efforts, we have decided to start the feasibility study on establishment of ammonia supply bases in the Sakai-Senboku area of Osaka (capable of importing and receiving, storing, and shipping ammonia). We have organized and analyzed the information necessary to determine its feasibility, aiming to start supply by fiscal 2030. In May 2024, this feasibility study project was selected for fiscal 2024 Subsidy for Measures to Promote Introduction of Non-Fossil Energy (Hydrogen Supply Infrastructure Development Project).

Osaka Works, a candidate site for the ammonia supply base Osaka Works, a candidate site for the ammonia supply base
Initiative 3:
Carbon-Negative Technology – Successful Demonstration of Methanol and Para-Xylene Synthesis From CO₂

Mitsui Chemicals, Inc., in collaboration with Osaka University and Kawasaki Heavy Industries, Ltd., has successfully conducted a demonstration test of a technology for synthesizing para-xylene using methanol derived from CO₂.

Methanol, in addition to its conventional use as a chemical feedstock, is now being utilized as a low-environmental-impact fuel for ships and other applications. Para-xylene is widely used in the production of polyester resins for clothing and plastic bottles. By converting CO₂—captured from the atmosphere via direct air capture (DAC) or collected from industrial emissions—into methanol and para-xylene, this approach contributes to both the reduction and fixation of CO₂ emissions.

The production method developed in this project enables a significant reduction in CO₂ emissions compared with conventional petroleum-based processes. Going forward, we will continue to advance this development and promote efforts toward commercialization, contributing to the realization of a carbon-neutral society.

This initiative was carried out as part of the Development of Technologies for Carbon Recycling and Next-Generation Thermal Power Generation project, a program run by the New Energy and Industrial Technology Development Organization (NEDO).

Figure 2  Overview and output of this project

Other Initiatives