E-Methane and biomethane are vital energy sources for achieving gas decarbonization. This program seeks to highlight their importance and future potential through the following initiatives:

1. 100% Use of City Gas with Environmental Value Added from e-methane and biomethane at the Expo Site
・　During "The Future of Earth and Biodiversity" Week on Sep 17-28, the Expo site will utilize urban gas made entirely from e-methane and biomethane produced by projects nationwide, attributing environmental value to ensure no additional CO2 emissions.

2. Promotion of e-methane and biomethane through Exhibits at the Gas Pavilion
・　The Gas Pavilion will feature clear and engaging exhibits showcasing the gas industry’s efforts regarding e-methane and biomethane, the mechanisms for transferring environmental value, and the initiatives carried out during the theme week.

３．Collaboration with the International Gas Union (IGU) Seminar
・　The IGU seminar, taking place in Kyoto on September 24, will present the latest trends in e-methane and biomethane alongside gas companies’ initiatives, highlighting natural gas as a low-environmental-impact energy source.
・　Positioned as part of Theme Week Connect, the seminar will be streamed online to share global efforts surrounding e-methane and biomethane.

【Reflection】
1. 100% Use of City Gas with Environmental Value Added from e-methane and biomethane at the Expo Site

During "The Future of Earth and Biodiversity" Week on Sep 17-28, 2025, we applied Clean Gas Certificates for e-methane and biogas to all the city gas-approximately 100,000 m³-, achieving net-zero CO₂ emissions.

2. Promotion of e-methane and biomethane through Exhibits at the Gas Pavilion
The Gas Pavilion will feature clear and engaging exhibits showcasing the gas industry’s efforts regarding e-methane and biogas, the mechanisms for transferring environmental value, and using 100% city gas with the environmental value of e-methane and biogas during the theme week.

During the theme week, approximately 50,000 visitors came to the Gas Pavilion and gained an understanding of the importance and future potential of e-methane and biogas.

３．Collaboration with the International Gas Union (IGU) Seminar r（Theme Weeks Connect）
This seminar was held at Hotel Okura Kyoto as part of the International Gas Union (IGU) LNG Committee meeting on September 24th,2025. The event was attended by approximately 140 stakeholders in total, including around 60 participants who joined online.

The seminar began with a guest address by Mr. Sakota, Director of Gas Market Office, Agency for Natural Resources and Energy at the Ministry of Economy, Trade and Industry. He emphasized the importance of LNG procurement and the need for international collaboration to promote the introduction of e-methane.

The seminar was conducted in two sessions.
The first session, themed "The LNG Market and Carbon Neutrality," focused on strategies by various players to ensure a stable energy supply while promoting decarbonization.

The second session, titled "Gas Industry Initiatives Toward a Carbon-Neutral Society," was moderated by IGU Honorary Member Mr. Yoshida and featured four speakers from Osaka Gas, The Hong Kong and China Gas Company, and ZeroBoard. The session introduced each company's technological developments and business strategies toward achieving carbon neutrality (CN), while also exchanging views on the need to establish international CO₂ accounting rules for carbon-recycled fuels.

Throughout the seminar, participants shared various decarbonization efforts by diverse players. A strong consensus emerged on the urgent need to establish international accounting rules for carbon-recycled fuels, as well as the recognition that cooperation across different sectors of the value chain is essential for realizing a carbon-neutral society.

【Post EXPO Initiatives】
1. 100% Use of City Gas with Environmental Value Added from e-methane and biomethane at the Expo Site
2. Promotion of e-methane and biomethane through Exhibits at the Gas Pavilion
This program provided a valuable opportunity for our customers to appreciate the importance and future potential of e-methane and biogas.

This program marks the first time in Japan that Clean Gas Certificates have been applied to supply all the city gas used at a large-scale event.

In June 2025, The Japan Gas Association formulated its “Action Plan 2030,” aiming to supply 1% of city gas with e-methane and biogas by fiscal year 2030.

To expand e-methane and biogas, the Ministry of Economy, Trade and Industry has implemented measures utilizing the transmission fee system. We will continue our efforts to deepen our customers' understanding of e-methane and biogas.

In the medium to long term, we will work to promote the use of e-methane and biogas nationwide by leveraging the certificate system.

The gas industry will continue to promote the widespread adoption of e-methane and biogas, contributing to the realization of a decarbonized society.

３．Collaboration with the International Gas Union (IGU) Seminar（Theme Weeks Connect）
At this seminar, we were able to engage in dialogue and disseminate information with a wide range of stakeholders toward the realization of a carbon-neutral society and LNG utilization, taking the opportunity of Expo 2025 Osaka, Kansai, Japan as a catalyst.

The content of the seminar was featured in the Gas Energy News and in a press release by the International Gas Union (IGU), and also drew attention from various media outlets. This provided an excellent opportunity to raise awareness among a broader audience about efforts toward achieving a carbon-neutral society.

Going forward, we will continue discussions and dialogue with domestic and international stakeholders on energy decarbonization and the future of the gas value chain, contributing to the realization of a sustainable society.

Osaka Gas Co.,LTD.