It's a little late in the game for me to incorporate solar, wind or other alternative energy source but I would be all in if I were a younger man.
Though they may need refining I believe the answers to generating or harnessing alternative/renewable energy sources are already on the table. I think the biggest hurdle holding up any real progress on the alternative energy front is convincing people to believe the science behind global warming/climate change. The powers that be and their baffle them with bullshit approach to issues like this and others needs to stop. Good luck with that eh.