For all its efforts with rooftop solar deployment, California has yet to show that decentralized renewable energy is not just a luxury that only the middle-class and high-income residents can afford. A new program run by nonprofit Grid Alternatives aims to install solar systems in disadvantaged neighborhoods, using $14.7 million raised through California’s cap-and-trade system. Eligible residents must live in a neighborhood designated as disadvantaged by the state. They must also own their homes and make no more than 80 percent of their community’s median household income. The state is leaving no stone unturned to reach its goal of reaching 30-percent renewable energy by 2025.