With the dual goals of cutting carbon emissions and reducing operational costs, the Metropolitan Water District of Southern California unveiled its latest investment in solar power today. Metropolitan board Chairman Randy Record joined General Manager Jeffrey Kightlinger to flip a ceremonial switch signifying the activation of two separate solar fields with 10,780 large, sun-tracking panels at the district’s F.E. Weymouth Water Treatment Plant in La Verne. The 3-megawatt solar installation covering 15.5 acres will generate about 6.5 million kilowatt-hours (kWh) of clean, renewable energy a year, offsetting nearly half of the plant’s energy demands.