Of course, coal has massive *external* costs, namely pollution, waste, CO2, that are not captured in the spot price.
Meanwhile France π«π· has the same 130 EUR/MWh price as Germany π©πͺ but 7x (seven times) lower emissions - it burns no coal and barely any gas. It's nuclear fleet is on the other hand running at 70% capacity right now:
I've been considering air-to-air heat pump (basically, AC that can both cool and heat) for my home. Still in the process of considering due to rather significant construction and financial impact :)