Grid scale batteries for solar day/night cycles can work. There is no good solution for seasonal fluctuations. Of course, a very large part of Earth’s population lives in close proximity to the equator with far less seasonal influences. It’s just unfortunate that those that pollute most (per capita) do not.
Nuclear is 2-4 times more expensive and grid scale batteries (the most costly way of storing power) are already being used.
https://www.forbes.com/sites/jeffmcmahon/2019/07/01/new-solar--battery-price-crushes-fossil-fuels-buries-nuclear/?sh=32681a7e5971
Grid scale batteries for solar day/night cycles can work. There is no good solution for seasonal fluctuations. Of course, a very large part of Earth’s population lives in close proximity to the equator with far less seasonal influences. It’s just unfortunate that those that pollute most (per capita) do not.