Here is an idea for a heat powered electricity. an iron black box to trap heat and then use the seebeck effect inside of it. put a junction of 2 different metals inside it and the other junction outside of it through a hole at the top of the box. you have to regulate the temperature difference by reflecting heat away. maybe white smooth aluminum at the top of the box. and put a solar powered fan on top of the box next to the other junction. maybe it will create a temperature difference to create the seebeck effect and create electricity.
@snowball789
Good to try to develop ideas.
A fast overview can be found here: https://en.wikipedia.org/wiki/Thermoelectric_generator
A more recent in depth review can be found here: https://doi.org/10.1016/j.rser.2026.117459
If you can't access this I can give you the pdf for research purposes.