All of the new gas appliances use some sort of electric for a spark or to power a glow plug in order to heat water or air. so when the power goes out many of us won't have hot water as the new tanks use electricity instead of a standing pilot to operate. And forget about baking anything in your gas oven as the temp. is maintained by an electric powered glow plug in many of them (no standing pilot) you can cook on the stove and even heat water on the stove even with an electric spark ignition as the burner can be lit with a match. Just sayin there is something else to think about. Someone who knows more about these appliances might be able to make a "hack" recommendation like using batteries? for temporary use.