Built facades and roofs out of glass-glass PV laminate. We have the technology from glass roofs/facades; you just add glass-catching-mesh/insulation below because you can't use the insulated multi-pane window glass construction with safety lamination and solar cells all three together.
On the other hand it doesn't make economic sense to not utilize 100% of nuclear reactor output, because nuclear fuel is cheap.
https://world-nuclear.org/information-library/country-profil...
Other good news: solar and wind is trivial to curtail at the press of a button. And very cheap to deploy far more than needed on a day with perfect conditions.
Thus the obvious solution is keep your nuclear running at full load 24x7 and vary the rate at which you feed solar and wind into the grid on those days of optimal production. Idle solar is nearly free, which is one of its largest benefits! This way you have enough solar and even short term battery to meet peak daytime demand even on relatively cloudy days, and don’t need to overbuild your nuclear fleet. But you still get seasonal energy storage in the form of extremely dense nuclear fuel.
Nuclear compliments renewables quite well if you remove the fake financial incentives of “I must be allowed to be paid dump every watt possible into the grid at all times even if not needed, but cannot be called on to produce more energy when required”. Solar produces the least valuable watts. Nuclear the most. So use the cheap stuff whenever possible but fill it in with the expensive reliable source when needed.
That or you’re just gonna be backing renewables with natural gas. Which is of course cheaper, but not all that green.
I remember, decades ago, that anti-nuclear activists (some of them were even university professors who ought to know better) argued that it was impossible while France had already been doing exactly that for decades (at the time).