Several years ago hubby made a solar panel, which warms our swimming pool. And it really works. We're able to swim many weeks before the neighbors pools are warm enough for them to use. There's a recent line of windmills, lining the eastern shore of Lake Erie. And builders around here are using insulated glass. Area folks are also buying smart cars!
_________________________
https://www.amazon.com/author/bonnie.mill-lemke
https://kdp.amazon.com/en_US/bookshelf