Depends... If you're ok with having even more coal/natural gas being burned in low efficiency peaking powerplants to make up for moments when solar and wind are falling short than perhaps. But if you want Germany to stop burning brown coal and stop needing Putin's Gas, then you need several times the pumped hydro Germany has even if it tapped 100% of what it can.
But per the usual, you anti nuclear environmentalists don't discuss the inconvenient facts to your side. Only your pipe dream scenarios that ignore all the downsides.
Like I said and I will say again, what matters isn't Germany renewables penetration alone, instead what matters is the total renewables penetration of Germany+the countries it has large electric interconnects total average, since Germany is frequently dumping massive overproduction (which otherwise would need several times more pumped hydro than it has) onto its neighbors, and then it can import baseload nuclear/pumped hydro from France when it falls short. When you average that you will see a far smaller number than the under 25% renewables penetration in Germany alone.
Like most rational environmentalists out there, I'm pro math, while you ignore it blatantly. Start doing the inconvenient math and you will see that nuclear is an essential component to solve climate change. Not my words per see, but rather the words of many renowned climate scientists PhDs, like Dr James Hansen, please google "james hansen need nuclear", watch Pandora's Promise, Cool It, and start differentiating the radical anti nuclear environmentalists whose math doesn't add up and the ones that actually do the complete math and want to solve climate change instead of chasing a pipe dream.
Solar is not peaking. Peaking produces when the grid needs it, a somewhat match between consumption and demand is NOT peaking. If you were an electrical engineer you'd know that by heart. I have talked about this with actual electrical engineers with actual grid generation and transmission experience. You are wrong.
I would however concede that solar + wind + a 2 hr electricity production buffer could actually act as a peaking source but it would still need fossil fuel backups.
A stand alone grid operating even 50% on solar + wind with efficient fossil fuel production (baseload plants with 60% efficiency) might not even be doable with a 6hr storage capacity.
But show me a single isolated electrical grid that did this in a Hawaii / Puerto Rico or larger scale. It just haven't been done yet anywhere in the world.
Like I say again, and again, if this solution were economical, it would have already been done in Hawaii, since it's fossil power plant is low efficiency even compared to state of the art peaking power plants.
Stop dreaming, Germany's is doing what it's doing because of its coal production lobby. There are strong economical interests desperate to maintain Germany burning lots of coal.
It's been said that upgrading the USA grid to handle a predominance of solar+wind would cost 10 trillion USD just in grid upgrades (you still need to add all the solar panels and wind turbines). I'm not sure the number is this high.
Nuclear power isn't evil. Nuclear weapons *might be*. I actually believe the massive nuke stockpile of NATO prevented WWIII and WWIV already. The only thing that prevents a dictatorship like USSR and now Russia/China from going to war is the certainty it will end up with massive population and economic losses. Another inconvenient truth anti nuclear environmentalists are unable to face.
Remember Eistein's quote: "I don't know what weapons WWIII will be fought with, but WWIV will be fought with sticks and stones".
So when its all said and done, nuclear power and nuclear weapons might be an essential force for peace and economic prosperity.
Keep installing your solar panels. Still waiting for Hawaii to go 100% solar+wind+hydro+biomass+geothermal !