AdvertisementOn Friday morning, power grid conditions started to change quickly as homes and businesses used a bit more energy than CAISO expected. (Al Seib / Los Angeles Times)There was still plenty of solar power flooding the grid, so peak demand came and went around 5:35 p.m. without incident. Solar energy would ultimately fall from a high of 11,590 megawatts on Friday morning to a low of eight megawatts at 8:20 p.m., before going away entirely. Lithium-ion batteries, long heralded as a power grid savior capable of storing solar power for the evening, proved their worth. Around 7:50 p.m., the power grid hit its “net peak” — the moment when electricity demand, minus solar and wind power, is highest.

Source: Los Angeles Times July 13, 2021 01:41 UTC