Four temporary mobile emergency power generating units totaling 120 megawatts (MW) deployed by the Department of Water Resources (DWR) are online and ready to support California’s energy grid in times of extreme stress on the grid. Two units each have been temporarily installed at two sites in Northern California: Greenleaf Unit 1, operated by Calpine in Yuba City, and the Roseville Energy Park, operated by Roseville Electric. Each unit can produce up to 30 MW of power, totaling 60 MW of power at each site.