Which of the following strategies enhances energy resilience by ensuring that critical loads are powered...

A battery energy-storage system can supply electricity to designated critical loads when grid power is unavailable. When properly sized and integrated with controls, transfer equipment, and potentially on-site renewable generation, the battery can maintain essential lighting, communications, refrigeration, medical equipment, security systems, or other priority functions. Increased insulation reduces heating and cooling demand and can extend passive survivability, but it does not directly provide electrical power during an outage. Energy-efficient lighting reduces the amount of electricity required and may allow stored energy to last longer, but the lighting equipment itself is not a backup power source. Battery storage therefore provides the direct energy-resilience capability requested while also supporting demand management and renewable-energy integration during normal operation.