

What’s wrong with that? The entire point of subsidies it to encourage people to do something that’s not currently very economical.
That the guidelines allow for fossil gas power plants. So basically battery storage has to compete with free power plants with maintenance also being paid by the government.
Yes day to day selling is profitable. However dunkelflaute is about two weeks a year in Germany. If you want to do that cheaply, you could just use biomass in the current coal power plants. That can be done pretty cheaply. I know biomass has issues, but they are certainly less bad, then building new gas power plants.















Also the Ukraine war, with a lot of the energy deals with Russia being cut. A lot was done back then.