That doesn't line up with the CalISO graphs, for today, the peak is around 6pm - 7pm (still late in the day for Solar, but solar does ramp up in time to help wi

That doesn't line up with the CalISO graphs, for today, the peak is around 6pm - 7pm (still late in the day for Solar, but solar does ramp up in time to help with the daytime peak at around 8:30am): http://www.caiso.com/Pages/TodaysOutlook.aspx http://www.caiso.com/Pages/TodaysOutlook.aspx But if you look at the August 1st graph here, the summer peak is around 4pm: http://www.energyonline.com/Data/GenericData.aspx?DataId=18 http://www.energyonline.com/Data/GenericData.aspx?DataId=18 In any case, the peak solar output is around 4600MW while overall demand peaks at 29000MW, so solar still has a ways to go before we have to figure out what to do with all of the peak power.