Hey Brad,
I am just in the process of installing an emergency generator for our house, which has a dedicted circuit for the tank. It is a Generac 10kW Air-Cooled Home Standby Emergency Generator. It is likely complete overkill for the tank, but we have a number of power outages every year, so I was willing to put one in that was going to last a while and be good for Disaster planning. I expect it to be up and running some time in the next month or two. They have installed all the electrical and are just waiting for the concrete pad on which it will sit to be poured.
http://www.generac.com/Products/Resi...oled/10KW.aspx