"Debunking the Myth: Solar Panels Are Not Reliable During Power Outages"
Most grid-connected solar systems are programmed to switch off during power outages to prevent unexpected energy from being sent to the power line. Therefore, solar panels alone cannot power homes and businesses during grid shutdowns unless paired with a battery. While rooftop solar is considered the cheapest form of solar energy, going off-grid entirely requires expensive batteries capable of powering a home through the night or on cloudy days. Hurricane Hilary's potential power outages have prompted San Diego Gas and Electric to increase field crews and staged equipment for a quick response.