Here is an interesting link with cost to build and operate various types of electrical generation plants:
https://www.eia.gov/analysis/studies...assumption.pdf
The numbers make it very clear why coal is on a decline and has been replaced by natural gas for both base loads and peak loads.
Solar and wind also look very favorable.
I looked at solar for my home last year and the finances make complete sense. The problem is opportunity cost. That $10K can make more money in other ways