Oh, but we can.
We used them for 50 years before replacing them with nuclear and gas, Germany alone not counting Norway has coal reserves for all of Europe for decades.
How about we do this, the rest of the world will try to mimic at least 10% of what we Europeans have done for green energy and then we talk?
We are banning everything left and right while others just dump tons of garbage directly into rivers, how about we find an equilibrium here and we won't be the only countries that pay inside prices for everything for saving the planet?
It's not that hard to continue operating most of those nuclear powerplants, they weren't decommissioned, most of them were just put on hold waiting for, guess what, money for that, as we as always pour money in everything wrong.
For coal powerplants, it's even easier, look at Riot and Mara how they bought a coal power plant and a smelter, both out of operation and they have got it up and running in under a year, for a country the size of Germany if it really wants it this will be a joke.
CO2 targets are crap, it's not CO2 that kills the planet there are other gases and heavy metals far more damaging than CO2, besides, CO2 capture works best in ways some poeple think is impossible. Trees get it from the air and release O2, all that carbon is stored in the tree when it decomposes it releases both co2 and methane, as that's what rotting is, the only thing you have to do to trap enormous amounts of carbon which is far easier than building up solar panels in a country that barely gets sun. One ha of forets contains around 160 tons of carbon, just burying those old trees trapping the carbon like in the Carboniferous and letting new trees grow would be far more efficient than any half-ass eco-green strategy.
Just as a head's up trapping all the wood in Canada will result in trapping more carbon that would turn via decay in CO2 than the entire world release from all its activities in 8 years.