Technicians work on photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

Technicians work on floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

A technician walks near photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

A technician works on a photovoltaic solar pannel at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

A technician works on a photovoltaic solar pannel at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

A technician works on a photovoltaic solar pannel at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

A technician walks between photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

Technicians use an inflatable boat to work on photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by GERARD JULIEN / AFP)

This aerial picture shows floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by Gerard JULIEN / AFP)

This aerial picture shows floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by Gerard JULIEN / AFP)

This aerial picture shows floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by Gerard JULIEN / AFP)

This aerial picture shows the construction site of the floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by Gerard JULIEN / AFP)

This aerial picture shows floating photovoltaic solar pannels at the power plant O'Mega1 in Piolenc, southern France on July 30, 2019. - The first floating solar energy farm in Europe by its size which will enter into service in September 2019. (Photo by Gerard JULIEN / AFP)