The use of pilot lights on gas appliances is being replaced by on demand ignition which are fired by A/C but most decent stuff has a battery backup should the lights go out. It's a safety thing.
This all comes down to properly preparing your situation in the event of power loss. Paying a steep premium for propane cause it works without electricity is pretty short sighted.
Installing a transfer switch and purchasing a portable generator is short money and can give you plenty of power for the essentials when needed.
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