Take a look at this chart with monthly solar electricity generation in Germany [1]. In June there's 6 times more solar generation than in December. That's it,

Take a look at this chart with monthly solar electricity generation in Germany [1]. In June there's 6 times more solar generation than in December. That's it, if you want to build enough solar capacity to cover you in December, then it's going to be 6 times more than you need in June. Solar might be cheaper than natural gas, but not by a factor of 6. [1] https://www.iea.org/data-and-statistics/charts/monthly-generation-of-solar-pv-in-germany https://www.iea.org/data-and-statistics/charts/monthly-gener...