Aerial view of the completed Rockfield Plaza solar installation in Lake Forest, Calif., showing the 310 kW rooftop array and adjacent solar canopy over the staff and visitor parking area.
Rockfield Plaza Association has energized a 310-kW rooftop and carport solar installation at its mixed-use office complex in Lake Forest, Calif.
WattHub Renewables developed the project, SunRenu Solar served as the engineering, procurement and construction contractor, and Sunrock Distributed Generation financed it through a power purchase agreement. The agreement required no upfront investment from the property association and is expected to provide electricity at approximately 20% below prevailing Southern California Edison retail rates.
The system is forecast to generate approximately 502,000 kWh annually, offsetting the plaza’s annual electricity consumption. It also includes a solar parking canopy providing shaded parking for tenants, employees and visitors.
Project components include Longi modules with U.S.-manufactured cells, SolarEdge inverters and optimizers, and Unirac RM10 racking. According to the project team, domestic content exceeds 45%, potentially making the project eligible for an investment tax credit of up to 50%, subject to confirmation by tax counsel. The system has received permission to operate. 
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