Supporting North America’s largest and most energy-efficient seawater desalination plant

How Macquarie Capital acted as exclusive Financial Advisor in the sale of 100% of the equity interests in the Carlsbad Desalination Plant

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Sector Infrastructure
Sub-sector Water
Location Americas


The Carlsbad Desalination Plant is a seawater reverse-osmosis desalination plant located in Carlsbad, California, producing 54 million gallons of water per day.

The Plant is a true marquee asset in the infrastructure space, being the largest, most technologically advanced and energy-efficient seawater desalination plant in North America, and one of a very limited number of privately held water assets in the USA.


Macquarie Capital was able to distill a complex project structure, technical details and documentation into a marketable due diligence package, and helped the vendors and bidders navigate critical permitting and approval processes both prior to and throughout the sale process.

In addition, Macquarie Capital’s Private Capital Markets team identified, attracted and managed strong interest from leading global infrastructure investors.


In November 2019, the Plant was sold to Aberdeen Standard Investments.

The plant provides 9% of San Diego County’s water supply

serving up to 400,000 people

Most technologically advanced and energy-efficient seawater desalination plant in North America

Developed as a 30-year public-private partnership

with the San Diego County Water Authority

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