Electric meter - one or two?

Process against what and based on what damage? Nonsense. Behavior contrary to [AGB] can primarily lead to termination. So what? They probably only pass the clause due to agreement with the [EVUs]. The possibility of control is close to zero. They just are not allowed to offer heating electricity.

Do you have single-rate meters or dual-rate meters?

Side question: Is a photovoltaic system planned? Then it is usually not worth it

So in the next 10-20 years, I rather don't think so

Just called Grünwelt. According to the hotline, they cannot supply me with a single-rate meter combined for household electricity and WP electricity because the grid operator would then reject them. Interesting statement, considering that I had a contract with them 2 years ago.

Lawsuit against what and on the basis of which damage?
Nonsense. Behavior contrary to the T&Cs can primarily lead to termination. So what?
They probably only push through the clause because of the agreement with the utilities. Control possibilities are close to zero. They just aren't allowed to offer heating electricity.

You’re ridiculously quick again with nonsense.

The T&Cs of a provider I know stipulate that a) the contract is terminated (lost profits for the minimum term) and b) the previous supply since the beginning is replaced by a tariff that corresponds to the basic supply. With an annual consumption of 8,000 kWh and a difference of as much as 7 cents, that’s 560 euros that the utility company will demand. If not paid, the usual procedure follows: debt collection, dunning notice, lawsuit... for legal details please consult a lawyer.

The question is how far they will get with this. But I will not volunteer as a guinea pig.

The fact is, you may be walking straight into this problem with open eyes. Or not, if you don’t know the problem (surprising contract clause).

And here there are only single-rate meters.