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  • Osaka Gas to supply U.S.-produced biomethane to EXPOCITY mall in Osaka
  • First use of overseas biomethane for a commercial facility in Japan
  • Gas comes with carbon-neutral certification, effectively reducing CO2 emissions to zero
  • Move aligns with Japan's evolving greenhouse gas accounting framework

OSAKA — Osaka Gas and its group firm Daigas Energy have agreed with Mitsui Fudosan to supply U.S.-produced biomethane to a major shopping complex in western Japan, marking the first such initiative for a commercial facility in the country.

Osaka Gas to Deliver U.S.-Sourced Biomethane to Major Mall, Marking
Osaka Gas to Deliver U.S.-Sourced Biomethane to Major Mall, Marking Japan First Osaka Gas Co., Ltd.

The biomethane will be delivered to Mitsui Shopping Park LaLaport EXPOCITY, a large retail and entertainment complex operated by Mitsui Fudosan in Suita, Osaka Prefecture. The fuel will be provided in the form of city gas bundled with environmental value certificates that effectively offset carbon dioxide (CO2) emissions to net zero.

Biomethane is refined from biogas generated during the decomposition of organic waste such as food scraps. Because its feedstock originates from plants that absorb CO2 during growth, its combustion is considered carbon-neutral in regions such as North America.

Osaka Gas procured the biomethane from Archaea Energy, one of the largest renewable natural gas producers in the United States. The gas is produced at landfill sites, liquefied at the Freeport LNG Terminal, and transported to Japan, where it is received at the company's Senboku LNG terminal in Osaka.

At EXPOCITY, Osaka Gas plans to replace approximately 30% to 40% of the city gas used for air conditioning and cogeneration systems with biomethane. The company is also showcasing the decarbonization impact to visitors at a carbon-awareness event, "Decarbo EXPO," held at the facility.

While biomethane is not currently included in Japan's official greenhouse gas accounting and reporting system, government panels are reviewing potential rule changes that could formally recognize its emissions benefits.

Osaka Gas said it is considering further procurement of biomethane while also advancing the development of synthetic methane produced from hydrogen and CO2. The company aims to expand the supply of carbon-neutral gas as part of its broader decarbonization strategy.

Why It Matters

The initiative highlights Japan's increasing reliance on imported low-carbon fuels to accelerate decarbonization, particularly in sectors such as commercial real estate where electrification alone may be insufficient.

If regulatory frameworks evolve to formally recognize biomethane's carbon neutrality, adoption could expand rapidly, creating new demand channels for global renewable gas markets.

Market Impact

The move may strengthen Osaka Gas's positioning in the transition to low-carbon energy, potentially opening new revenue streams tied to environmental value-added services.

Investors are likely to monitor regulatory developments closely, as formal inclusion of biomethane in emissions accounting could significantly enhance its commercial viability in Japan.

Data Box

  • Companies: Osaka Gas, Daigas Energy, Mitsui Fudosan
  • Facility: LaLaport EXPOCITY (Osaka)
  • Biomethane Source: United States (landfill-derived)
  • Replacement Ratio: 30%–40% of gas usage
  • CO2 Emissions: Effectively net zero (with certificates)
  • LNG Processing: Freeport, Texas → Osaka (Senboku terminal)