Wind does not take up much space. You can place them in agricultural areas, at seas or even in mountain highlands.
Solar placed on roofs or over parking spaces does not compete with anything for space either. Even installing it on grasslands is less terrible than it seems, it does not create deserts because enough sunlight gets through between the panels to let planets grow in the shade.
With nuclear you spend such an enormous amount of money building it, that there is not going back on the decision afterwards. Nuclear power plants are having enormous cost overruns and they keep the project going because they don't want tens of billions of euros to be for nothing.
I'd say build gas power plants to buy some time to get the grid working better. Some coal plants can be converted to biomass plants.
- CO2 emission of gas power plants,
- dependence on the import of natural gas - it means dependence on Russia.
We know and can build secure nuclear power plants - we made great progress there. They will help Germany to shut coal plants faster and buy time to research and develop alternatives, maybe we will get to fusion power plants in our lifetime.
Also, there is a problem that there are no serious healthy discussions about it now in Germany: loud voices prevail, the moderate people are afraid to share different opinions; a single large party in conservative opposition, AfD, does deny human impact on the climate change, so they cannot be a moderate voice of sanity.
May it be that investing in renewables is not a good focus for Germany now, are there better areas that we should focus on to save the planet?