If that means fewer kilowatts than I get now for the same dollar, NO DEAL.
My standard of living is something I won't compromise on. Everything I value - everything that makes my life great - including medicine, cuisine, art, travel, education, and countless other things, requires huge amounts of cheap, reliable energy.
If these lame energy sources were truly worthwhile, their proponents would build a startup around it, start making a profit, attract private capital to expand, and make even larger profits. Notice that in this case, the entire stream of transactions is 100% voluntary. Everyone involved is free to pursue their own lives as best they see fit.
Instead, what they clamor for is government handouts, and laws to shackle the production of energy from sources that actually work. That's totally involuntary. If you have to force people to accept your new idea, it's no good. That's because any such forcing prevents people from acting on their own best judgement (or even having their own best judgement - a mental process detached from reality does not constitute thought), and pursuing the things they care about.