That's a "yes, and" kind of thing. We can't build nuclear fast enough yet. So we need both. I'd argue that wind and solar is much more important at this point since the growth of those is now faster than nuclear has ever been. And fast growth of non-fossil energy sources is priority #1 right now. We can free up some land later with nuclear. Wind and solar isn't going to push any species to extinction, so any damage is reversible.
Though I'm a bit wary of nuclear given there are studies indicating that the heat energy added by thermal power plants contributes surprisingly much to global warming. If we can replace all thermal power plants with renewables that's a nice contribution to reducing global warming. On the order of CO2 emissions from planes if I remember correctly.
I'm sure we could "afford" the heat from thermal power plants if we didn't have so many greenhouse gases. But when we're already so close to the edge of the cliff, every little bit counts.
If we produced a gigawatt of energy by cleanest way possible, where do you think this gigawatt ends up? Some "energy dumpyard" somewhere outside the solar system?
The temperature is a balance between energy incoming from the sun and energy being radiated off into space. Wind and solar don't change that balance directly, although the lower reflectivity of solar panels makes a small local difference. Ultimately it's the transmissibility spectrum of the atmosphere that matters. Which is why we care about CO2 in the first place.
Though I'm a bit wary of nuclear given there are studies indicating that the heat energy added by thermal power plants contributes surprisingly much to global warming. If we can replace all thermal power plants with renewables that's a nice contribution to reducing global warming. On the order of CO2 emissions from planes if I remember correctly.
I'm sure we could "afford" the heat from thermal power plants if we didn't have so many greenhouse gases. But when we're already so close to the edge of the cliff, every little bit counts.