Earlier quoted context omitted.
> The frustrating part about solar is that because the peak generation output doesn't line up with typical peak consumption ("the duck curve"), utilities need natgas peakers, which sit mostly idle, to fill in the gap. Solar does line up with peak consumption. The duck curve is not a consumption curve, but a "Net Demand" curve -- the demand remaining after solar and generation is removed. Peakers existed before solar.…
> Solar does line up with peak consumption. Not true according to [1], which shows peak consumption around 19:00, just as solar production drops to 0. [1] https://en.wikipedia.org/wiki/Duck_curve
That may be true on Oct 22, 2016 (the date displayed on wikipedia) net of behind the meter generation (which shows up as a reduction of demand), but it's not true on the peak days of the year, which is what the capacity of the grid is sized. You can see more here: http://www.caiso.com/TodaysOutlook/Pages/default.aspx