> the overall monetary costs
But it's false, just look at LCOE (levelized cost of energy) for UK. First, it's cheaper than off-shore farms, second, it's not "far bigger" than on-shore wind farms or solar. Third, and most importantly, you physically cannot cover 5'000 km2 in UK or Germany with solar panels or wind farms and equivalent nuclear power plant will occupy <1 km2 at worst.
> So it is difficult, but not impossible
With people already blocking any new wind farms I believe yes, it's impossible.
The land in Europe is too precious to use it for huge wind or solar farms. Whatever is not residential, is used for farming, whatever is not used for farming is nature reserve.
And unlike the protests against nuclear power plants or 5G, the protests against wind/solar farms actually make some sense.