Greenhouse gas emissions

Our company aims to achieve carbon neutrality by 2050 for CO ₂ emissions from our own corporate activities (Scope 1 and 2) that can be directly reduced. In addition, we have established emission reduction targets for 2030 in our Mission 2030, and set annual targets as a roadmap. Furthermore, we will work to reduce the environmental impact of raw fuels and production processes, and promote energy conservation and the use of renewable energy. To promote decarbonization, there are limits to what can be done by individual companies. Therefore, in addition to our own efforts, we are actively seeking to work with groups of companies in the surrounding area and local governments to develop social infrastructure.

In the future, we will continue to work on reducing Scope 3 emissions through cooperation with upstream and downstream partners and the development and provision of environmentally conscious products and technologies for reducing environmental footprint based on our unique technologies.

Efforts toward zero emissions

Our company continues its efforts toward achieving zero emissions ^※ by utilizing industrial waste as a substitute for raw materials and thermal energy in cement kilns and reducing waste emissions through various production process improvements.

• ※Definition of zero emissions: (Waste landfill volume ÷ Total waste generated) < 1% Target: Domestic sites including affiliated companies

Efforts for Information Disclosure

As ESG investment that emphasizes corporate social responsibility (CSR) attracts attention, the importance of information disclosure regarding environmental responses is increasing. The Denka Group is actively working to disclose information regarding environmental burden reduction responses through financial-related reports and public disclosure to external frameworks.
The Denka Group is actively disclosing climate change-related information covering the entire value chain and has been responding to CDP's Climate Change Questionnaire since fiscal year 2015 with the aim of enhancing environmental management and increasing corporate value through the sustainable use of resources and energy. From fiscal year 2019, we have also expanded our responses to include Water Security. In addition, we are objectively analyzing our responses to CDP, and conducting consideration and improvement of governance related to environmental management and risks and opportunities based on future insights taking climate change into account.
In fiscal year 2025, we obtained scores of A- for Climate Change and A for Water Security.

The latest CDP questionnaire is here

Efforts to Reduce CFC Emissions

Our company is implementing the following initiatives to fulfill our responsibilities as the administrator of the target devices ^※1.

1. As of April 1, 2020, all applicable devices owned by Denka main office have been registered to the refrigerant management system (RaMS) of the Japan Refrigerant and Environment Conservation Organization (JRECO) ^※2, and appropriate management of devices as stipulated in the Fluorocarbon Emission Control Act from installation to disposal is being conducted.
2. In line with the replacement of aging air conditioning and refrigeration equipment, we are also switching to refrigerants with a lower greenhouse effect.

In addition, JRECO conducts an annual rating of companies regarding their understanding and awareness of the Act on Regulation, Efforts, and Information Disclosure of Fluorocarbons, and information dissemination. Our company has received the highest rating of A rank for three consecutive years.

In the future, we will continue to implement appropriate inspections and early leak prevention measures, and promote efforts to prevent global warming as well as ensure compliance with laws and regulations.

• ※1Applicable devices: First-class specified products (commercial air conditioning and refrigeration equipment) as defined in the CFC Emission Regulation Act
• ※2Number of owned devices: 6,395 (Air conditioning devices 3,988 / Refrigeration and freezing devices 2,407) As of July 31, 2026
• ※3Calculation of leakage amount: Carbon dioxide equivalent

Conducting third-party verification

In order to improve the reliability and transparency of the data of our greenhouse gas emissions, and to promote ongoing environmental management, we have received verification from an independent third party (Japan Quality Assurance Organization: JQA).
For details, please refer to the reports posted on our website.

Verification Period

Japan: April 1, 2024 – March 31, 2025
Overseas: January 1, 2024 – December 31, 2024

Scope of verification

1. Greenhouse gas emissions (energy-origin, non-energy-origin CO ₂ emissions) for Scope 1 and 2
2. Greenhouse gas emissions for Scope 3 (Categories 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)

Applicable business sites

1. Denka's head office, directly controlled branch offices in Japan, and 11 plants (Omi Plant, Omuta Plant, Chiba Plant, Bibai Plant, Shibukawa Plant, Ofuna Plant, Isesaki Plant, Isesaki Ota Plant, Gosen Plant (Niigata Plant, Kagamida Plant), and Denka Innovation Center), as well as 6 consolidated subsidiaries in Japan and 9 overseas subsidiaries listed in the Securities Report.
2. Greenhouse gas emissions from Denka headquarters aggregated for Scope 3 (Categories 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)

Verification Report

Greenhouse Gas Emissions Verification Report (PDF format/922KB)Issued on March 25, 2026

Approach to Public Policy

The Denka Group declared its achievement of carbon neutrality by 2050 in fiscal 2020. As a milestone toward this goal, we aim to reduce CO ₂ emissions by 60% (compared to fiscal 2013) by 2030. To this end, it is important to engage not only with our Group and value chain but also with industry organizations, countries, and governments. We recognize that it is also important to make policy proposals to encourage countries and regions to take action.