Yes. If you have a gas fireplace or stove with a standing pilot, it will light during a power outage since it doesn’t require any electricity to activate the pilot flame. If your gas fireplace was manufactured in recent years, it might be equipped with an energy-saving ignition system that requires electricity to spark the pilot flame each time it is ignited. However, many models have battery backup systems that can be used to light the pilot flame during a power outage. Batteries should only be used in the event of a power outage because battery longevity can be affected.