Hi Brian. My take on UPS systems is that they are only useful to ride out a short outage so the computer can be shut down properly. Without a really huge battery system you will not ride out a really long outage anyway. In my hobby work, a friend puts a cheap UPS on each radio+computer system he installs. He used to buy expensive UPSes to get extended run time. Now he just buys the cheapest one that will give him maybe 10 minutes backup time to carry over on a short outage. Just be sure to hook it up for auto-shutdown on the computer. If it is critical to keep the system up full time, then you need to buy and install a generator system with automatic-start and an automatic-transfer switch that runs on natural gas or maybe propane. On natural gas you are likely to have a long term supply of fuel for the generator. But if you are worried about the possibility of NG being shut off in an emergency, then you may want to buy a propane-based generator instead. For a long-term emergency backup, gasoline is least desirable. Diesel is just a little bit better. In my opinion, propane and NG are the best for long-term stability.... Many companies go with diesel systems for other reasons.... I think diesel has too many design challenges in our winter environment. For some of the radio sites I know, a 15KW propane-fired generator is standard and it needs a minimum 500 gallon propane tank to support the generator at full load and should run for about 3 to 5 days before the tank needs to be refilled. At lower load it might run for 8 to 10 days before refilling.... But that is a really serious annual expense. Doug.