No no, the cost of gas and coal are are not the problem in Germany, it's the huge relative importance of wind and solar, which creates huge oscillations in output.
You can check the numbers in any good site on statics, eg Ourworldindata.
CDU+SPD are populist right wing?? Bullshit.

Nuclear plants require a high initial investment, but the base load they provide pushes immediately the bills down for the consumer.
Check out the bill in France vs. Germany.
As well as CO2 production.

Best way to lower bills: more nuclear.
Best way to have clean sustainable energy: more nuclear.
Best way to be geopolitically indipendent: more nuclear.