Silo at Epoca South: A Unique Solar System for a Unique Multi-Family Roof

Commercial Case Study

Silo at Epoca South
Otay Mesa, CA


With a housing crunch in Southern California, developers like ColRich are trying to meet demand and provide quality, multi-family communities that also enable residents to power their homes with renewable energy. 

The developers incorporated solar into their initial build. The unique building design at Silo at Epoca would offer a rooftop with both flat areas as well as areas at a 45-degree pitch. The large solar system would need to incorporate two different types of arrays to maximize the available roof space.  


The solar design and build was incorporated into the early planning and initial construction of the units. This early planning gained efficiencies on the 1,434-panel solar system. In addition to project cost savings, this prevented inconveniences during unit showings and move-ins. 

The unique building design required both pitched-surface racking as well as flat commercial solar array mounting. The use of both panel-mounting options enabled the HES Renewables team to maximize the available roof space. 


By incorporating a solar system into the initial construction of their multi-family property, ColRich was able to provide units powered by renewable energy from the day of the community’s ribbon-cutting. As more California residents increasingly value green-energy living, a home running on nearly 100% solar energy attracts then retains more residents. The arrangement also provides excellent financial savings, as residents of Silo at Epoca will save an estimated $920,000 in electricity costs over a 25-year period. 

For the property developer and owner, the solar system provides an additional revenue stream for the investment. The HES Renewables solar system benefits ColRich’s bottom line and brings an additional, marketable element to the community. An immediate benefit that lowers the investment costs are the various incentive programs that applied to the project, including the Federal Investment Tax Credit, the Federal Bonus Depreciation, and the State MACRS Depreciation opportunities.

A large multi-family facility is under construction. There are two solar installer putting panels on one of the steep roofs. There is solar panel racking on several other areas of the roof.
Two solar installers, one leaning sideways on the steep roof, put solar panels on a roof.

“Our communities are so much more than the raw materials required to construct a building or the four walls in which we work. At ColRich, we invest in the physical, cultural and financial well-being of our residents and employees. We create neighborhoods that offer comfort, security and support, where people come together to allow communities to thrive and endure.”


Quick Facts

A solar installer checks the alignment of solar panels on a steep roof. There are more roofs of the multi-family complex under construction in the background.

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We are a San Diego-based solar energy production and energy storage installation company. We have been an energy innovator since 2001 and can handle projects from solar-only arrays to micro-grid solar and storage systems with on-site EV charging stations. 

If you’re looking into the benefits of on-site energy production, energy storage, or EV Charging capability, we’d love to speak with you. We’ll show you how to lower and stabilize energy costs, receive the maximum incentives, open new revenue streams, and gain control over one of the largest expenses of your business or commercial property. 

Click here to be contacted by an HES Renewables representative, or simply dial us at 866-HES-RNEW (866-437-7639).

Robert Laverty

Senior Energy Consultant, Residential

Robert Laverty joined the HES team in the summer of 2018, bringing his ten years of solar design experience and his Bachelor’s degree from the University of Puget Sound with him. Robert is dedicated to finding solutions to help families produce and store electricity in order to reduce their reliance on grid power as well as help reduce their household’s carbon footprint. Robert’s experience as a newspaper editor as well as his involvement with the sustainability-focused Rocky Mountain Institute drives him to constantly seek out innovative ways to meet energy needs through renewable resources as well as helps him share those ideas with Southern California homeowners. When not at work or volunteering time with his church or community, Robert spends time with his wife and two sons or pursues his passion of fly fishing.

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