Wanted to suggest solar but added cost won’t make sense without multi use

PoE splitters exist

Most of the time bunch of wireless esp32 bundled a mini pc do much better.

AWS has been doing this for over a decade now as I’ve heard each racks gets 800v DC. Hungry GPUs have gotten more attention for others. Datacenters next plan is to put 1500v at rack level.

Makes me wonder if this is what Donut Labs gonna ship in few months.