Installation of more than 3,500 solar panels that could generate more than 1.6 million kilowatt hours of electricity annually is expected to begin this summer at Naperville’s Springbrook Water Reclamation Center.

When completed, the six acres of high-efficiency solar panels will produce enough energy to power 145 homes a year, according to Staci Wilson, director of government affairs for the Illinois Municipal Electric Agency.

Naperville’s solar project will come at no direct cost to the city as the Illinois Municipal Electric Agency, of which Naperville is a part and where the city gets its power, is commissioning the facility, Wilson said. A developer will build and fund the project.