Energy storage and geothermal power facilities are also being considered to improve power supply in the region of Alsace, after the nuclear power plant is closed, the French government stated. France 's Ministry of Ecological and Solidarity Transition ( CSFD ) will tender for 200 MW solar power , to be located at the Fessenheim nuclear power plant in Alsace . Fessenheim , France 's oldest nuclear power facility , is due to be decommissioned in 2020 . The tender will likely comprise 200 MW ground - mounted solar and 100 MW rooftop PV . CSFD said the tender , terms of which have already been defined , will be launched by the end of this year . Power storage and geothermal are also being considered as ways of boosting power supply in Alsace after Fessenheim shuts down .
France 's Ministry of Ecological and Solidarity Transition ( CSFD ) will tender for 200 MW solar power , to be located at the Fessenheim nuclear power plant in Alsace . Fessenheim , France 's oldest nuclear power facility , is due to be decommissioned in 2020 . The tender will likely comprise 200 MW ground - mounted solar and 100 MW rooftop PV . CSFD said the tender , terms of which have already been defined , will be launched by the end of this year . Power storage and geothermal are also being considered as ways of boosting power supply in Alsace after Fessenheim shuts down .