[profile53]

Most natural gas in the U.S. comes as a byproduct of fracking oil, which imo is worse than coal as reserve power because you have to maintain fracking sites and usually pump a fair amount of oil and briny water alongside the gas. Coal is easier to mine in small amounts afaik and has less local harms (e.g. water contamination, earthquake risk, etc.).

[pfdietz]

No, actually most natural gas in the US is produced as "non-associated" gas, not gas associated with petroleum production.

Coal's been driven out of the market because it can't compete with natural gas. Solids are not as easily handled as gases.

[profile53]

That is incorrect. Somewhere in the order of 90% of US nat gas is shale gas/fracking related.

https://www.eia.gov/energyexplained/natural-gas/where-our-na...

[pfdietz]

Yes. And most of that is not associated with petroleum. It's fracking of formations that contain only natural gas, no petroleum. Fracking is also used on oil-bearing formations, but not only there.