The problem I have with the world economy is that it's based on lies and suppression. We already have very old tech that is being used for power and electricity production.
Look up trompe (not trump). There's one in operation here in a Canadian mine. It is also tested it for cleaning water polluted by mines in the US.
There were business run off pressurized air, as well as cars. It cools the air on decompression and it oxygenates the water. The infrastructure would be cheap for any government to put in place, and the maintenance costs are minimal. I'm sure this isn't a one of kind tech.
The question isn't, what are we gonna do? It's why aren't we doing it?