I'm just listening to some podcasts about Fallout, and what none of them seem to mention when talking about the resource war is why the world didn't just build solar panels. HELIOS One powering Archimedes II proves that pre-War solar panels are much more efficient than the ones we have, so my question is if the USA could power a (seemingly) orbital laser artillery device with a fairly small solar farm, why could they not completely phase out nuclear and oil energy with solar power when oil and uranium supplies started to run out?