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Combining Solar and Energy Storage Systems to Save Money in California

The City of Del Mar increased energy supply reliability to save energy and money by installing a new system on the roof of its city hall building expecting a 90% reduction in energy use from the grid.

The following is an excerpt from the full article here:

Nestled on the southern coast of California, the City of Del Mar is prime for solar power opportunity. In 2017, the city leveraged that opportunity to increase energy supply reliability and save energy and money. With financial assistance from the U.S. Department of Energy’s (DOE) Office of Energy Efficiency and Renewable Energy’s (EERE) State Energy Program, Del Mar installed a 62.6 kilowatt photovoltaic (PV) system and a 120 kilowatt hour battery energy storage system on the roof of its City Hall building. The measures are expected to achieve a 90% reduction in energy use from the grid and an annual reduction of 30 metric tons of carbon dioxide emissions.

This project was a collaborative effort between the City of Del Mar and the Center for Sustainable Energy in San Diego to showcase the energy savings and performance metrics that can be provided by PV/energy storage systems. The two teams applied lessons learned from City Hall to other building projects throughout the city. DOE funds were also used to design and build an exhibit at the Del Mar Civic Center that includes an interactive kiosk, interactive displays, and an educational energy dashboard.

“We’ve been hearing over and over again about this beautiful, new facility and how well it fits with our community,” said Del Mar Councilwoman Sherryl Parks.

This project is expected to provide more than $625,000 in energy savings over the next 25 years. It will also serve as a demonstration project to achieve other goals for both residential and non-residential energy use.

“As California cities seek greater energy efficiency, it is increasingly important to develop strategies that maximize the benefits of combining solar and energy storage systems," said Alex Kaufman, City of Del Mar Energy Engineer.


Lazen Power Engineering's greatest ability lies in delivering reliable and innovative infrastructure solutions to our clients’ challenges and needs. Our services we provide are transmission line engineering, distribution line engineering, distribution fire hardening, PLS-CADD™ hardening and reliability, construction management, and drone inspections. Our collaborative team includes engineers and business professionals who all share our vision of providing innovative solutions to our clients. Lazen Power Engineering is headquartered in Orlando, FL.

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