Solar power. We have used solar power for thousands of years. We use the sun for drying clothes or making salt or other things. Solar power comes from the Sun. Sun’s energy. Just a tiny fraction of the sun’s energy that hits the Earth is enough to meet all our power needs many times over.
It’s pretty unlikely that solar power is going to be the answer but you can have a little bit of lots of things. Solar power is often an excellent extra to use with other renewable sources