Besides a Generac, like @frongt@lemmy.zip is talking about, UPS aren’t for long term power supplies. I like my Generac whole house. We have ice storms in this area and I like the creature comforts that electricity brings with it. LOL Personally, I would host on a VPS. You might rummage around in Low End Box to find a suitable deal on which to host. Or host your chat server on something with low power draw like a NUC, but eventually, the UPS is going to drain.