Solving the HOA funding trap with a 300 kW Southern California solar and roof bundle

A commercial homeowners association in Foothill Ranch, California found a way around a common problem with solar: putting new panels on a roof that's near the end of its life. Normally an old roof means you'd have to remove the solar system, replace the roof, and reinstall the panels partway through a 25-year contract, an expensive hassle. The Foothill Medical Center Association avoided this by rolling a full roof replacement into its solar financing.

The HOA signed a power purchase agreement, or PPA, meaning a developer pays for and owns the solar system while the HOA buys the electricity it produces, with no upfront cost. The financing was structured to cover both a 300 kW solar system (spread across rooftops and new parking carports) and a complete roof reconditioning, so the association didn't need to charge members special fees or dip into its savings. Crews did the roof and solar work in one continuous construction sequence instead of two separate phases, which kept the timeline tight and avoided disruption.

The finished system is expected to generate about 506,000 kWh of electricity a year, offsetting roughly 359 metric tons of carbon dioxide annually. It's designed to work with Southern California Edison's time-of-use rate plan, drawing on solar power when electricity is most expensive. For homeowners in an HOA with an aging roof, this project shows that solar financing can sometimes be structured to cover roof repairs too, avoiding the need for separate, costly assessments.