Good on you, Depending on the emergency (hurricanes and tornados come to mind) and the nature of the damage the utility will cut the supply on orders from FEMA, the fire department, the state or city.
BTW I have an interest in a company that supplies emergency gen sets to the oil patch and cell phone companies. Back up and redundancy is the name of the game if you want to keep the lights.
Might add that NOLA used NG as back up for their emergency communications system. That was BEFORE Katrina. The practice was to put gen sets in the basement as well and everyone know how well that worked.
As for me and mine we have duel and in some cases tri-fuel options. Equipment is mounted well above the 500 year flood line. In Okla. and N Texas we have the equipment and fuel in safe rooms.