Hard Lessons in Living Off the Grid
I'm the only person I know who doesn't like solar power. The lifespan of panels and batteries are both too limited - they will require complete replacement at too high a frequency for a society.  In contrast, I'd like to see wind turbines continue to evolve - so that they can be maintained over many lifetimes. Seems like a no-brainer -- but I'm the only one I ever hear saying that.