HOUSTON — Doris Brown was nearly asleep when a neighbor knocked on her door, telling her to look outside. “There were no lights, nowhere,” said Brown, recalling the power outage that summer night in 2023. “I didn’t even know it.” Brown’s solar panel and battery system was keeping her power on. She’d prepared for a night like this. “Call everybody,” she told the neighbor. Soon around 15 “neighbors and neighbors’ neighbors” were inside Brown’s th...