Through the innovative use of a solar array installed in 2010 and a state-of-the-art cogeneration system installed in 2014, the Hayward (San Francisco) Water Pollution Control Facility has attained net zero energy. Jeff Carson, manager of operations and maintenance, takes viewers on a guided tour of the plant, which sends its unused energy to the power grid from a photovoltaic 1-megawatt system. A master control panel lets the utility view electrical production and export information to its energy authority, which then credits the account.

About the Hayward Water Pollution Control Facility
Owned and operated by the city, the Hayward Water Pollution Control Facility has served the area since 1952. On average, it treats 11.3 million gallons of wastewater per day. Read the full profile here.