The move comes as the company is replacing old thermal power plants with new ones with less emissions of carbon dioxide(CO2).

JERA, a joint venture between Tokyo Electric Power and Chubu Electric Power, will permanently close the 43-year-old 0.6-GW No.1 unit, the 34-year-old 1-GW No.3 unit and the 30-year-old 1-GW No.4 unit, all of which have been shutdown since 2016-2018.

JERA is currently replacing 2.99 GW thermal power plants with new facilities.

After the decommission, JERA's capacity of thermal power plants would total 55.77 GW, excluding those under construction, a company spokesperson said.

(Reporting by Yuka Obayashi; editing by Miral Fahmy)