It has to be said tho that the Green party is doing "realpolitik" now. While they aim at one hand to drastically accelerate renewables, right now they also invest heavily in getting a more secure energy situation in the near future still using a lot of fossil fuels, including rapidly building up LNG terminals and securing deals with parties they previously frowned upon, e.g. a gas deal with Qatar, the government of which the Green party previously heavily criticized for the human rights situation in the country. And e.g. they accepted - with some bickering - the temporary gas (as in petrol) price subventions the other coalition parties wanted, in exchange for temporary public transport price subventions (a 9-Euro regional ticket, that is valid for a month at a time, 21M sold by July 1, population 83M).
They are still rejecting nuclear power generation, neither wanting to build new plants, nor keeping old plants running (the operators of said old plants already called the idea of keeping those plants running "infeasible" to outright "stupid").
It remains to be seen what the blowback will be if inflation doesn't at least slow down, or if autumn and winter come and people start getting cold. Tho right now, the politicians and leading experts and "experts" say, it doesn't look like there there will be a shortage on a scale that gets life-threatening to some people.
[0] 20-24% share in recent polls, vs the 14.8% they actually got in the last election in Sep 2021. They are actually slightly ahead of the SPD (social democrats) in the polls now. The SPD is the majority partner in the coalition.