Comment by 3eb7988a1663

Pretty close. Sesame Energy[0] make these shipping container boxes with solar panels + batteries so you can just drop them where you need no-supply chain energy. The boxes also synthesize hydrogen which can be used to power drones. The talk I heard from the CEO said the automated swapping of hydrogen canisters was not yet there, but they were working on it. Nothing in robotics is easy, but this feels like a very attainable goal that the military would pay to get working.

[0] https://www.sesame.solar/audience/us-military-allies