Established in 1978. While many companies have come and gone over the past three decades, Nexus Energy Systems (Bay Sun Solar ... 's parent Company) has been faithfully serving the home improvement needs of California consumers since 1978. Since, establishing themselves as one of the largest solar installers in the State of California with over 10,000 solar installations. They have never received outside funding and also have zero debt. This has been made possible by building a company culture of extreme integrity that always puts the homeowner first, and by providing over-the-top customer service. read more