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Yokosuka power station (横須賀発電所) is an operating power station of at least 1300-megawatts (MW) in Yokosuka, Kanagawa, Japan.
In 2014, TEPCO and J-Power proposed a 1,000 MW coal-fired power station in the city of Yokosuka, with a planned operation date of 2020. It will be constructed at the site of Tepco's Yokosuka oil-fired power plant, which has been taken offline because of its age.
According to the Kiko Network, the unit would be 650 MW. It is under EIA assessment and planned for operation in 2023.
In April 2016, TEPCO said it was adding another 650 MW unit to the plant, also under permit review and planned for operation in 2024. J-Power is no longer listed as a sponsor. The plant is sponsored by Jera, the JV formed in 2015 between TEPCO and Chubu Electric Power.
In January 2018, the Draft Environmental Impact Assessment for the project was submitted by JERA, a joint subsidiary of TEPCO and Chubu Electric.
In April 2019, JERA's president stated that the company was still committed to building the plant despite the cancellation of several proposed coal plants in Japan and recent divestment from coal by numerous Japanese banks.
The EIS process was completed in February 2019. According to the Kiko Network and news reports the plant construction of the plant had begun as of December 2019.
According to Beyond Coal Japan, the units are planned to come online in 2023 and 2024.
In July 2022, the power station started trial operations. The local group No Coal Tokyo Bay issued a protest statement against JERA.
Unit 1 started commercial operation on June 30, 2023, as Japan Beyond Coal highlighted.
Unit 2 started commercial operation on December 22, 2023.[15]
In June 2025, JERA announced plans to conduct carbon capture, utilization, and storage (CCUS) testing at Yokosuka power station. The CCUS equipment was slated to be installed by FY2030.
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In April 2021, young climate activists protested at the plant arguing that it was necessary for Japan to phase out coal power to be successful in the fight against climate change.
In June 2023, the citizens group No Coal Yokosuka issued a statement of protest, calling to “Stop operation of the coal-fired power plant, which will intensify health risks for residents and accelerate the climate crisis.” Kiko Network also issued a statement strongly protesting the operation of the plant. Citing JERA’s major ad campaigns that claim to “Make fire that does not emit CO2”, the statement pointed out that JERA’s recent activities – starting operation of Taketoyo Unit 5 (a 1,070 MW coal power unit) last August and now also Yokosuka Unit 1, and constructing Yokosuka Unit 2 as well as other new LNG-fired thermal power stations – are not only not zero emissions, but actually increase Japan’s CO2 emissions.
