Lets say its March 7th 2016 9am in Germany and there is about 70GW of demand to keep the country functioning and you are a greenie looking forward to a day when there is no more nuclear or CO2 producing power plants..
Ooops. 0.03GW from solar. 1.09GW from wind. 10.7GW from nuclear. 51.5GW from CO2 producing power plants (gas, coal, biomass, oil)