My folks just installed one for about $4K and had it wired to the electrical system. It's got like 7000 watt capacity and would be more than enough to handle your house I'm sure. Given all the outages you guys have, and that your business depends on it, might be prudent given how often blue tower loses power.
If the cost is high, maybe you could do a kickstarter?
"The worst of it all is i used to ENJOY getting excited for big titles like this, but these publishers just keep ruining my love for this wonderful hobby with their endless fuckery." - Sempai