Nuclear power generation is also being used, you just don't hear about it much. You can see California's power supply by fuel here: http://www.caiso.com/TodaysO

Nuclear power generation is also being used, you just don't hear about it much. You can see California's power supply by fuel here: http://www.caiso.com/TodaysOutlook/Pages/supply.aspx http://www.caiso.com/TodaysOutlook/Pages/supply.aspx Right now it's around 10%, but it's different for different regions.