If we're going to depend on renewables for almost all electricity generation, this will require both energy storage, and installing more renewables than are nee

If we're going to depend on renewables for almost all electricity generation, this will require both energy storage, and installing more renewables than are needed for typical usage. This wouldn't be true if we had cheap energy storage that could supply load for weeks at a time through unusual dips in generation, but that seems unlikely. In practice it's cheaper to install excess generation than excess storage. Now, if you've got excess generation for electricity, then at times of good generation, you want to use that electricity for something, as otherwise the electricity price will be negative. Using it to produce synthetic fuels for aviation seems like a really good match, as that electricity would be effectively free.