I've only ever seen billboards for "clean coal" in SE Ohio, SW PA, and West Virginia.
Ohio produces 1/20th the coal of WV - which is a much more economically poor state - and coal isn't even really that important to WV's economy. Ohio's economy is much more similar to PA - and PA produces 10x more coal: https://www.eia.gov/coal/production/weekly/
Coal is all politics.
I mean, it is still used for a lot of energy production - almost everywhere in the US - Ohio definitely: https://www.eia.gov/state/?sid=OH.
I'm sure power plants don't want to shut down overnight because someone bans coal completely - and they shouldn't. But it's just not economical in most places - the plants are phasing out naturally almost everywhere.
The less scale there is with coal - the less viable it becomes. It's a vicious cycle.
Power plants naturally phasing out because coal isn't economical will have almost 0 impact on Ohio.
Places like WV - that's a different story. WV sells coal! Ohio doesn't.
Coal also doesn't employ people like it used to. It employs 3,000 people in Ohio: https://www.ohiocoal.com/information-library/history-coal-mi.... That's out of a ~5.4M labor force: https://www.bls.gov/eag/eag.oh.htm. That's ~0.05% of the workforce... Even WV is only ~0.15%...
It's really only important to a few barons who want coal to stick around long after it's economically viable (the governor of WV).
I doubt socks are tasty, but please let us know.
In Ohio for residential, which is a good bit more expensive than commercial/utility scale solar, the payback period is about 12 years[4], well within the margin of getting your money back and then some.
0: https://www.cincinnati-oh.gov/mayor/news/cincinnati-to-const... 1: https://newmarketsolar.com/ 2: https://www.nrel.gov/gis/assets/images/solar-annual-ghi-2018... 3: https://solargis.com/file?url=download/Germany/Germany_PVOUT... 4: https://www.energysage.com/local-data/solar-panel-cost/oh/
Pretty sure Germany is more know for poor green energy planning, burning more coal, and instance on non optimal strategies for power generation (killing nuclear).
[0]: https://globalsolaratlas.info/map?c=20.797201,-46.494141,3&s...