Unless you live in Spain, where solar energy generation by individuals is taxed in a way that it is a lot cheaper to just buy energy from the grid. Investment i

Unless you live in Spain, where solar energy generation by individuals is taxed in a way that it is a lot cheaper to just buy energy from the grid. Investment in solar energy generation in Spain is one order of magnitude smaller than 10 years ago. Your post-scarcity world will surely not include Spain.