Here in my area, after Rita and now Ike, I have a huge amount of people asking and wanting a Generac and asking about my Natural Gas bill and how much is costs. So far, I have told them, this is the first time I have used it for an extended time and the cost to run it? Who cares. I am confortable and don't care at this time. Maybe next month when I get the bill I may change my mind, but doubt it. This thing has been a Godsend to me at this time. Hope it never has to be used again and will make it more worthwhile, but I am ready if it does again. My only regret is to now have gotten a little larger one, but can complain as I run my 4 ton a/c (not actually rated for 4 ton but works just fine for me) plus I haven't done without on most anything else. I don't have my stove top or oven on it but most everything else can be used, I just watch how much at one time I use. I have two deep freezes and two refrigerators (one inside and one outside) and I didn't loose any food throughout this ordeal. Since my wife uses a CPAP breathing machine, I will ask my insurance to help with gas bill, but don't know if it will happen or not and still don't care too much either way but will still ask.