Basically, I agree with James Hansen in "Storms of My Grandchildren".
The coal and other fossil fuel power plants should be replaced with Gen IV waste using nuclear where
other forms of non-emissions power is unfeasible. In the sunbelt---all solar. On the coast, wind, wave, and tidal. Other areas with good wind and still others good for micro hydro.
Population reduction is also important.
To me, it is doubtful that emissions will be reduced enough to prevent AETM (circa 2500AD), and it is already too late to stop the population crash of the late 2040s or sooner.
I have lived on solar power since 1998, and panels are much cheaper than mine were. A big problem is the lack of general skills of most people to install alternative energy systems themselves and make them truly affordable as overpopulation rips away at income and increases costs from increased demands.