Yes – most electric fireplaces now come equipped with backup batteries which can run on DC current just like car batteries do instead of trying to find another way to keep warm when there isn’t any other option available. This also comes in handy because they don't need ventilation (like traditional stoves do) so you can keep them indoors without worrying about carbon monoxide poisoning! The downside to having the backup battery option is that it costs more money and takes up space (both inside your actual fireplace as well as in storage if not used frequently enough). If you're looking for a less expensive version then there are some which run solely off of electricity – though these won’t work at all during power outages unless plugged into an outlet where they receive regular access, this has no negative effect whatsoever upon their safety or function.