It is a thing! https://www.fiberopticlink.com/product/fiber-optic-isolation-systems/power-solutions-for-fiber-optic-isolation-systems/power-over-fiber-system-p

It is a thing! https://www.fiberopticlink.com/product/fiber-optic-isolation-systems/power-solutions-for-fiber-optic-isolation-systems/power-over-fiber-system-pof/ https://www.fiberopticlink.com/product/fiber-optic-isolation... (I mean, solar panels are a thing, so turning light into power is definitely possible, and these things do exist.. I just doubt they have the economics the people in that room desired)