The cheapest fos of electricity, measured in costs per kWh from project auctions (as in: country A wants plant of whatever form, various companies provide their bids and the cheapest offer, per kWh, wins) are solar and wind. Since 2018 at least, that coal comes usually next is simply the fault of dirt cheap, and wastly under priced, CO2 certificates.

And regardless of what politians say, when something is a good investment, somebody does it. Hence the continious growth of solar, wind seems to run into way more hurdles, from regulation over NIMBY to technical issues.