None of this is true. Germany has had a conservative government from 1982 to 1999, and from 2005 to 2021. The Green party has been in the government as a junior partner only once from 1999 to 2005. The conservative governments mainly bet on nuclear (until Fukushima) and on cheap russian gas, while neglecting renewables. Coal consumption has dropped significantly in the last decades with a small resurgence last year due to the russian gas embargo. Nonetheless, the gas supply for heating never ran low since the russian invasion.