So how do you handle peak periods but it happens to only be a low wind generation day? Just tell everybody brownouts are in effect? The only reason that happens in enormous cities like LA, SF, and Austin TX is because they have way too many people drawing power. The grid can't be built faster than people can move in.

In terms of electricity generation, this is why batteries are a monumental step towards making green energy feasible. It accounts for these peak periods, capitalizes off of them, then reuses the stored energy when energy generation is low.