Avangrid operates two business units, Networks and Renewables. Networks operates eight regulated electric and natural gas utilities across New York, Maine, Connecticut, and Massachusetts, serving over 3 million customers. Renewables has historically focused on developing onshore wind projects but is looking to make developments in solar and offshore wind over the next five years. It operates nearly 8.6 gigawatts of renewable energy projects across the US. Spanish utility Iberdrola spun off Avangrid's predecessor, Iberdrola USA, in 2015. Iberdrola owns 81.6% of Avangrid and has proposed to acquire the remaining shares.