Like the idea of multi-room UPS. Question, once the UPS battery run out during a power outage, is there any other type of power generation (Solar, Propane or gasoline) as a backup (aware of the servers will consume more watts than it can generate)?
Yes, I have a 27kw Natural Gas standby generator with an ATS. It takes 10 seconds from power failure, to it switching to generator power. So, the UPS just bridges that gap
In the extremely unlikely even the natural gas goes out, I have a 7.2kw Tri-fuel portable generator (Gasoline, NG and Propane) and I keep around 80 gallons of gasoline on hand, and I have an inlet and interlock on the main breaker, so I can switch to that if needed