Just fucking deploy modern nuclear technology. Run trains and heating and industrial heating for entire cities limitlessly with a predictable dollar budget. Zero carbon emissions.
The problem I have with this entire line of argument is how in reality you have nations such as China generating significant volumes of carbon credits in exchange for that sweet cash generated by gullible nations.
We have the Department of fucking Energy and a thousand other agencies that have researched and operated this technology for decades in the most grueling environments (Nuclear Submarines and other classified domains) and it is more than ready for large scale commercial use.
Imagine having limitless power to run projects of Earth scale -> Literally convert saltwater of an ocean into freshwater and pump it continuously into deserts or inland. . . Turn off natural gas heating entirely in the northern hemisphere thanks to electric heating . . The possibilities are endless.