Roughly 70% of American households cannot access rooftop solar. They rent, they live in apartment buildings, their roofs are shaded, or they cannot afford the upfront cost of a conventional installation. That exclusion has been a persistent structural problem for residential solar adoption in the United States, and for most of the past decade there has been no obvious solution to it. Germany found one. Balcony solar, small panel arrays that hang from a railing and plug into a household outlet, has been installed in more than a million German homes, generating roughly 700 megawatts of distributed capacity from apartments and terraces. The technology is simple, cheap, and requires no ownership of a roof. The United States is now in the middle of deciding whether to allow it.
Franco Faraudo is a Co-Founder at Propmodo, a publication dedicated to innovation in the built world. He focuses on themes such as construction, real estate, architecture, and urban development, exploring topics like commercial real estate, PropTech, and the housing market. Franco's insights and expertise have been featured in Propmodo and NewsBreak.