I know this is going to sound like some far, left/right field idea but; what if there were NO energy costs? Our world economy could shrink to where we could live on hundreds (?) of dollars a year instead of tens or hundreds of thousands a year, (all things being relative). The energy problem could be fixed right now but would topple this existing economy, which would in turn and in time be a good thing.
Check out all the magnetic motors being created in garages and private factories around the world. The technology exists, is cleaner than clean and is free to operate. As soon as I can, I'm going to start making them for personal use and then spread the word. (I hope this isn't the last time you hear from me.)
Check it out for yourself, free energy technology exists!