Start? They have been spending ~$30 billions a year on green energy subsidies for the last 20 years, and a little less than double that for the total energy subsidies. It should be well over a trillion dollars in tax money going into the energy sector this century, which is by far more than any other country in EU.

The energy sector get almost as much subsidies as the total funding of the Germany military, 1.5% vs 2% of BNP.

It would be interesting to know how much more tax money is needed for an independent and environmentally friendly energy grid if they just continue as they done in the past.