The devil here is in the details. Solar energy (and you left out, crucially, storage) still isn't feasible for the worlds poor yet, though it is the obvious so

The devil here is in the details. Solar energy (and you left out, crucially, storage) still isn't feasible for the worlds poor yet, though it is the obvious solution to the problem. My biggest issue with advancements in solar power + storage is that because so much R&D is happening out West, everyone builds for grid tie use cases. Can't help but think we'd be much further along if we assumed the current grid didn't exist at all (which might as well be true for the worlds poor)