For Mrs Nic A’ Ghobhainn they need to have one hell of a lot more than one hour's backup time. Two days would be more like it, seriously. That’s how long the power was out in Jan 2005 in some parts, less where I am.
It is incredibly bad that whenever we lose everything in a thunderstorm or a big power cut, the 4G+3G base station across the valley goes down too. You would think they ought to be required to have both a UPS and a diesel generator for base stations, since they are vital to householders motorists in accidents, seafarers round here. My wife drove off the road and ended up parked in some trees, thank goodness she had some signal and managed to crawl out of the car.