Commentary California this year has wasted enough renewable energy not connected to the grid to power more than 325,000 households—enough to provide all the household electricity needs for Anaheim, Irvine and Riverside combined. Otherwise put, it equates to about 90 percent of the number of San Francisco households. Totally wasted. Rooftops and fields throughout California have solar arrays that generate more power than can be used. Local utilities and system operators disable those power sources from sending power to the grid, lest so transmission and distribution lines have more power than can be used at that particular time. Power lines require that the power supplied equals the power used. This is why “energy storage” is such a big deal. If power supplied does not exactly equal power used, power lines can sag, which has the potential to start fires in trees or other vegetation below. Through April 22, the California …