Excess capacity (literally free power) is only a problem because we mandate that electricity generation can only be done as a business that has to earn profit margins.

Because of economics, this means it makes sense as a business to sell power that requires a purchased input commodity, and doesn't make as much sense as a business to build enough solar to sell power during darker months. This is absurd, backwards, and is hampering our ability to deploy clean and affordable power.

National Governments should be massively overbuilding solar and just handing out the resulting power. It's really difficult to mismanage a solar farm.

Maybe instead of a deregulated generation market, we should focus on a barely regulated power storage market.