It's is not 'government subsidies' as one might think.

Instead the next grid operator has to take the electricity and has to pay a certain government specified price for it. The electricity companies will sell electricity to the consumer and these will pay for it. So the end consumer pays the price. The goal is to reduce the price for renewable energy such that it is at the level of other electricity (from coal, gas, nuclear, ...).

There is no tax money involved. The electricity consumers pay for it.