[1][2][3] Plans to build a power station in Yokosuka were drawn up in 1957, and a site was prepared next to Kurihama Port by filling in part of the bay.

Tokyo Electric planned to replace all existing equipment at the Yokosuka Thermal Power Plant with 13 new gas turbine units with a total rated capacity of 3296 MW within 2011.

[4] In September 2016, JERA proposed replacing the existing Yokosuka thermal power plant with two modern and efficient coal-fired generating units.

In November 2018, the Ministry of Economy, Trade and Industry (METI) approved the final environmental impact assessment (EIS) for a 1.3 GW coal-fired power project.

[5] In May 2019, a group of residents of Yokosuka sued the Japanese government for approving an allegedly simplified EIS report in the Tokyo District Court.