> but only during the day, and there's a massive deficit during the night
Only if you assume the demand stays constant, but it doesn't; Demand is usually the highest when PV output is also the highest, the middle of the day when everybody is at work, using all kinds of electricity drawing machines.
Only if you assume the demand stays constant, but it doesn't; Demand is usually the highest when PV output is also the highest, the middle of the day when everybody is at work, using all kinds of electricity drawing machines.