The Irvine Ranch Water District (IRWD) – Battery Energy Storage Systems is a 7,000kW energy storage project located in Irvine, California, US.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2016 and was commissioned in 2018.


The Irvine Ranch Water District (IRWD) – Battery Energy Storage Systems was developed by Advanced Microgrid Solutions. The project is owned by Macquarie Capital (USA) (100%), a subsidiary of Macquarie Group.

The key applications of the project are demand response, electric bill management and electric supply capacity.

Contractors involved

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Advanced Microgrid Solutions, Macquarie Capital (USA) and Tesla have delivered the battery energy storage project.

Additional information

The 7 MW / 34 MWh BESS will utilize Tesla batteries, installed at 11 of IRWD’s largest and most energy-intensive facilities, including three water treatment and recycling plants, a deep aquifer treatment system, a groundwater desalter facility and six high-energy pumping stations, as part of a major grid modernization project for Southern California Edison (SCE). The energy storage systems will be linked together as a network providing IRWD facility managers real time visibility and operational flexibility in responding to utility requests for demand reduction. IRWD expects to see cost savings of more than $500,000 per year on its energy bill. The IRWD-AMS Project is supported by a 10-year power-purchase agreement with Southern California Edison Company.

About Advanced Microgrid Solutions

Advanced Microgrid Solutions offers an artificial intelligence (AI) based energy software that optimizes the value of batteries, renewables and entire asset portfolios to use more clean energy with higher ROI.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.