A1 Sun is family owned and managed. Larry Giustino began working in solar more than 50 years ago, and has been a part of every major evolution in the technology. Our team of knowledgeable installers and design professionals come from within our local community. Our community is our customer base. We are proud to have installed more than 5,000 Megawatts of renewable power in the Bay Area (and counting!) An Alameda County Certified Green Business since our first year in business, we install the same components for our clients that we use ourselves. Our commitment to the environment extends beyond what we do, to how we do it. We precycle, then recycle everything that is possible to recycle. We minimize waste and appropriately dispose of what we cannot recycle. We only get one planet! It is up to all of us to save it. In 1965 at the age of 11, Larry manufactured a photovoltaic cell through a Bell Telephone Lab school program in San Diego, CA. Starting with a raw silicon ingot and after weeks of preparation phases, the polished and doped pie shaped quarter silicon wafer produced about 0.5 DC volts in full sunlight. It worked perfectly converting sunlight into electricity and was a bri