Does it have its own gas well? My sister has a home backup generator, they lost power during some cold snap and some pumping component failed and her neighborhood lost gas too. The only house in the neighborhood that had heat/power had a big propane tank because it was built before the neighborhood got gas.
I’ve never seen a data center with natural gas backup power. But I don't know if that's because of reliability or if it's too expensive for a big natural gas hookup that's used rarely. Though I have heard of the opposite -- using natural gas turbines as primary power and utility power as backup.