MacTech, your definitely on the right track, I would go with a 15KW or higher generator. 15K will run your whole house fine, I have a 12.5 KW gas portable and it runs everything fine but wish I had a 15KW. My old supervisor has a 15 KW generator that he ran during the hurricane session and he definitely made out cost wise by using farm diesel in his tractor (dyed fuel) and If I had the land, I would have gone that route as well. If you have a good tractor you have a great power source a lot cheaper than gas or propane/natural gas.

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Failure is not an option!
USMC Jungle Environmental Survival Training PI 1985