I recently sold my back-up genset, never gets use. On top of that, I decided that my (42kva) genset would consume diesel fuel at a rate that would eclipse the cost of a luxury hotel room. Consider a 12kva genset, which would consume about 1gph of diesel, which is 24gallons/day and even at $3/gallon you would be spending $72/day, ... plus the cost to buy/install/maintain the APU.

A 12kva is IMO minimum if you want to run a house on limited power for a reasonable amount of time, if you have a 100% power factor / duty cycle, that makes around 55a @230VAC available, would run a water pump, reasonable HVAC system, refrigerator, TVs and lights if managed well.

Yes, 1800rpm, brushless, and liquid-cooled are three things I'd definately require.

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Gone to the dark side

- Jeff