First Solar Inc. and NRG Energy Inc. announced the start of commercial operation for the largest photovoltaic (PV) solar project in California. First Solar developed and built the 21-megawatt (MW) power plant in Blythe, California, which was acquired last month by NRG through its wholly owned subsidiary NRG Solar.

The Blythe plant is expected to generate over 45,000 megawatt-hours of electricity per year.