The agency I have been working with was with out power for 5 days. We were using a surplus military 8 KW diesel generator. At 25% load, it ran 18 hours on 10 gallons of fuel. Because of who we are and more importantly, who we knew, we were able to obtain Jet A to keep the generator fueled. Note: Do Not go down to your local airport and ask to buy Jet fuel or aviation gasoliine. They can't sell it to you (it's primarily a tax thing).

Jim