One of Japan's Largest Dedicated Biomass Power Plants Begins Commercial Operations in Sendai, Miyagi Prefecture- Contributing to a carbon-neutral society through the stable supply of low-impact renewable energy -

Sendai-ko Biomass Power GK, jointly funded by Sumitomo Corporation, Tokyo Gas Co., Ltd. ("Tokyo Gas"), Hokuriku Electric Power Company ("Hokuriku Electric Power") and Sumitomo Corporation Tohoku Co., Ltd. ("Sumitomo Corporation Tohoku"; collectively, the "four companies"), has commenced commercial operations of the Sendai Port Biomass Power Plant ("the Plant") following completion of construction in November 2025.

With an output of 112 MW and an expected annual generation of approximately 800,000 MWh (equivalent to the annual electricity consumption of roughly 260,000 households), the Plant is among Japan's largest dedicated biomass power facilities. It will provide a long-term, stable supply of renewable energy in the Tohoku region and contribute to the advancement of carbon neutrality.

The Plant uses wood-based biomass fuels, including pellets and chips, derived from thinning timber, mill residues and lower-grade wood generated during forest management. All fuels are sourced from forests under recognized forest certification programs (*1). Sumitomo Corporation oversees fuel procurement, ensuring proper utilization of forest resources and maintaining full traceability. In this project, we aim to reduce greenhouse gas emissions as part of broader efforts to lower overall environmental impact through the use of renewable energy, while also pursuing sustainable business operations with due consideration for forest resources.

Comments from Project Partners

Sumitomo Corporation

Sumitomo Corporation aims to achieve carbon neutrality across all Group business activities by 2050 as part of its response to climate change. The company's renewable energy equity generation capacity reached approximately 2 GW as of the end of March 2025. It will continue to contribute to a decarbonized society and a sustainable future through the development and operation of renewable energy projects in Japan and overseas.

Tokyo Gas

Under its management vision "Compass 2030," the Tokyo Gas Group has pledged to pursue "the challenge of achieving net-zero CO₂." The company will continue collaborating with business partners to expand its renewable power portfolio with an emphasis on capital efficiency and investment discipline, while staying closely aligned with the needs of local communities and society.

Hokuriku Electric Power

Hokuriku Electric Power is working to expand its renewable energy adoption toward its target of "more than 1 million kW of renewable energy (3 billion kWh or more annually) by the early 2030s compared with FY2018." The company will apply the expertise gained from wood biomass co-combustion at its Tsuruga Thermal Power Station and Nanao Ohta Thermal Power Station to this project, while advancing a range of initiatives to help realize a carbon-neutral society.

Sumitomo Corporation Tohoku

Sumitomo Corporation Tohoku, a wholly owned regional integrated trading company of Sumitomo Corporation, is engaged in addressing climate change. By participating in the introduction and operation of renewable energy projects rooted in the region, the company aims to contribute to sustainable regional development and support the realization of a carbon-neutral society.

*1 Programs under which independent, third-party organizations certify appropriate forest management from environmental, economic and social perspectives, supporting sustainable forestry.

Power Plant Overview

Name	:	Sendai Port Biomass Power Plant
Operator	:	Sendai-ko Biomass Power GK Established January 2021
Equity Shareholders	:	Sumitomo Corporation: 45% Tokyo Gas (via its wholly owned subsidiary Prominet Power Co., Ltd.): 25% Hokuriku Electric Power Company: 25% Sumitomo Corporation Tohoku Co., Ltd.: 5%
Location	:	10-16 Minato 4-chome, Miyagino-ku, Sendai City, Miyagi Prefecture
Generation Capacity	:	112 MW
Annual Generation	:	Approx. 800,000 MWh

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