Here's what I was looking at when I get some cash to buy a generator. Looks like a good idea, at least to me it does. This way you don't have to worry about storing gasoline and/or refilling it. I can't think of any time I've had an interruption in my natural gas service.
You can use these conversion kits to run off either natural gas or propane.
Anyone out there have any experience retro-fitting something like this?