He had a pretty unfortunate card dealt to him with the Russian invasion of Ukraine and Germanys dependence on Russian gas, especially in its industry.
I think the move away from nuclear energy in Germany was a mistake, but one which was decided on way before he came into office. Doubling down on nuclear would have cost a fortune (old reactors weren't maintained well enough to run for longer due to phase out decision after Fukushima & not enough new engineers in Germany). He was in a lose lose situation, I think he did pretty well overall, but was blamed for old decisions (Altmaiers abandonment of German solar industry, heating reform by CDU+SPD) and had bad handling of reports on him in the news.
I think the move away from nuclear energy in Germany was a mistake, but one which was decided on way before he came into office. Doubling down on nuclear would have cost a fortune (old reactors weren't maintained well enough to run for longer due to phase out decision after Fukushima & not enough new engineers in Germany). He was in a lose lose situation, I think he did pretty well overall, but was blamed for old decisions (Altmaiers abandonment of German solar industry, heating reform by CDU+SPD) and had bad handling of reports on him in the news.