The DV 5500TVE, DV 5500RVE, and DV5500MHE fireplaces typically require electricity to power their fans and electronic ignition systems. If the electric goes out, these models may not operate properly, as they rely on electricity for ventilation and ignition. However, if they have a manual ignition option or a backup system, they might still function without power. Always consult the manufacturer's specifications for your specific model to confirm its capabilities during a power outage.