Sorry for the late reply. The 19% power figure comes from the PUC. Here are some links: http://www.kqed.org/news/science/climatewatch/waterandpower/waterneedsp

Sorry for the late reply. The 19% power figure comes from the PUC. Here are some links: http://www.kqed.org/news/science/climatewatch/waterandpower/waterneedspower.jsp http://www.kqed.org/news/science/climatewatch/waterandpower/... This one goes into more detail and picks that 19% number apart. Also quotes the 10TWh number: http://blogs.kqed.org/climatewatch/2012/06/10/19-percent-californias-great-water-power-wake-up-call/ http://blogs.kqed.org/climatewatch/2012/06/10/19-percent-cal...