Deploying solar or wind is nice and stuff, but it doesn’t remove fossil plants, because when there is no sun / wind (which happens a lot in Europe), you need to burn fossil fuels. Storage is not viable today, both because it emits a lot of co2/kWh (especially if you wanted to eliminate fossil plants, you’d need to overprovision) and because of supply constraints.
Hydro and nuclear is the only low-carbon future.