If Ethereum had remained PoW, would it have helped sustainable energy adoption?

I believe Proof-of-Work (PoW) can actually help sustainable energy projects.

If a company installs solar panels to cover its winter energy needs (air conditioning, heaters, etc.), a big part of that capacity would go unused for the rest of the year. In my country (BR) only large power plants can participate in auctions to sell excess electricity. Regular people and businesses can only offset their energy bills (from other billing addresses) by using credits, but they can't profit from selling surplus energy. (I don't know if it's like this in the rest of the world.)

Here electricity is extremely expensive. Some individuals and businesses even finance solar panel installations and then pay the bank the same amount they used to pay for electricity ... until the system is paid off, after which they get essentially free energy. If Ethereum were still PoW, people could mine crypto with their excess solar energy, making their investment in panels break even much faster.

PoW could've been an extra incentive for renewable energy adoption.

What do y'all think?