Red Sea Project Desalination Plant: ACWA Power's flagship water solution for Saudi tourism hub

Responsible: ad hoc news Flagship & Bestseller Desk. Reviewed prior to publication on June 12, 2026 at 8:06 PM ET. Details in the imprint.

ACWA Power's desalination plant for Saudi Arabia's Red Sea Project has emerged as one of the company's flagship water solutions, designed to supply around 30,000 cubic meters of drinking water per day for a new luxury tourism destination on the kingdom's west coast, with production powered entirely by renewable energy. The facility is part of a broader utilities concession that covers water, power and wastewater services for the Red Sea Development Company, aiming to support thousands of hotel rooms and residential units while minimizing environmental impact. For U.S. readers, the core story is a utility-scale infrastructure asset that combines seawater desalination, solar power and advanced wastewater treatment in a single integrated platform, illustrating how ACWA Power packages long-term service contracts for large tourism and industrial projects. Although individual U.S. consumers will not buy this plant the way they buy home appliances, the project showcases technologies and operating models that are increasingly relevant for water-stressed regions and institutional investors focused on renewable infrastructure.

How the Red Sea Project desalination plant works

The Red Sea Project utilities package, led by ACWA Power, uses reverse osmosis technology to turn seawater into potable water, a process that forces salted seawater through semi-permeable membranes at high pressure to remove dissolved salts and impurities. According to project documentation and industry briefings, the initial phase of the desalination plant is sized around 30,000 cubic meters per day with provisions to scale up as more hotels and residential units come online, equating to roughly 7.9 million gallons per day. Reverse osmosis has become the dominant desalination technology globally because it is typically more energy efficient than legacy thermal processes, which is important for a project that aims to rely entirely on renewable power for both electricity and water production. To support this approach, ACWA Power's utilities concession for the Red Sea Project also includes solar photovoltaic generation assets and battery storage, allowing the plant to run on clean electricity while balancing the intermittent nature of solar energy.

The desalination facility is integrated into a wider water cycle that includes wastewater treatment and reuse, with the goal of achieving high recovery rates and minimizing discharge into the surrounding marine environment. Project information indicates that treated wastewater will be reused for irrigation and landscape purposes across the resort, reducing the need for additional desalinated water and helping to protect sensitive coral reef ecosystems in the Red Sea. This closed-loop approach aligns with the Red Sea Project's positioning as a sustainable tourism destination, and it also reflects ACWA Power's strategy to bundle desalination and wastewater plants into long-term contracts that provide stable cash flows. For municipalities and resort operators in other regions, including parts of the United States facing drought risks, this type of combined desalination and reuse model offers a template for reducing dependence on traditional groundwater or river supplies while managing environmental impacts.

From a technical standpoint, ACWA Power's desalination plant is expected to use energy recovery devices and high-efficiency pumps to lower the specific energy consumption of the reverse osmosis process. Energy recovery devices capture pressure from the outlet of the membrane system and reuse it to pressurize incoming seawater, reducing the amount of electrical power needed per cubic meter of water produced. While exact efficiency figures for the Red Sea Project installation have not been publicly detailed, comparable large-scale seawater reverse osmosis plants that use modern energy recovery technology can achieve energy consumption in the range of 3 to 4 kilowatt-hours per cubic meter, significantly less than older thermal systems. ACWA Power's focus on efficiency is not just an engineering choice; it directly influences operating costs and enables the plant to operate within the constraints of a renewable-only power supply, which must carefully manage load profiles across day and night.

The plant's location on Saudi Arabia's west coast provides direct access to Red Sea seawater, which typically has different salinity and temperature characteristics than open ocean water, influencing membrane selection and pretreatment design. Pretreatment is a critical part of any reverse osmosis system because suspended solids, organic matter and biological growth can rapidly foul membranes, leading to higher energy usage and more frequent replacement. The Red Sea Project plant is expected to use a combination of screening, filtration and chemical conditioning steps to stabilize feedwater quality before it reaches the high-pressure membranes, helping to maintain consistent output and reduce maintenance intervals. For resort operators, the payoff is a more reliable water supply that can meet peak demand periods during tourist seasons without frequent interruptions or quality issues.

In terms of scale, the utilities package that includes the desalination plant is structured under a public-private partnership model, where ACWA Power and its partners design, finance, build and operate the facilities under a long-term concession with the Red Sea Development Company. Under such models, the offtaker - in this case, the resort developer backed by Saudi Arabia's Public Investment Fund - typically commits to purchase agreed volumes of water and power at contracted tariffs, providing revenue visibility for the project company. This concession structure is common in the Gulf region's power and water sector and aligns with ACWA Power's broader portfolio of independent power producer and independent water producer projects, which often sign 20- to 25-year agreements with government-backed utilities or large industrial customers. For institutional investors, these assets can resemble infrastructure bonds with long-dated, contracted cash flows, although the projects themselves are not directly marketed to retail investors in the United States.

While the Red Sea Project desalination plant is being built in Saudi Arabia, the underlying technologies and engineering approaches have global relevance, including for water-scarce states such as California, Arizona or Nevada, where desalination and water reuse are part of ongoing policy debates. Engineers and planners from U.S. utilities often study large international projects to understand best practices for integrating renewables with water infrastructure, and the Red Sea installation contributes to this knowledge base by demonstrating a fully renewable-powered desalination operation at resort scale. For technology vendors, the project also serves as a reference site, highlighting the performance of membranes, pumps and energy recovery systems under real-world conditions in a high-salinity, high-temperature marine environment. As more coastal regions consider desalination as a component of their water security strategies, projects like this one provide data and operational experience that can inform permitting decisions, environmental impact assessments and tariff structures.

From a market positioning perspective, ACWA Power presents the Red Sea Project desalination plant as part of a suite of flagship assets that showcase its capabilities in delivering integrated water and power solutions for large-scale developments. The company has built up a portfolio that includes conventional and renewable power plants, seawater desalination facilities and, increasingly, green hydrogen and green ammonia projects, leveraging a similar project finance and long-term offtake model across these sectors. That means management can point to the Red Sea plant not only as a source of contracted revenue but also as a reference when bidding for new tourism, industrial or municipal water projects in the Middle East, Africa and Asia. For observers tracking the evolution of global water infrastructure, the plant illustrates how private-sector project developers like ACWA Power complement state utilities by mobilizing capital and technical expertise for specialized assets.

For now, the Red Sea Project desalination plant remains primarily an infrastructure solution rather than a consumer-facing product, but it underscores the role of advanced water and power technologies in enabling new tourism and urban developments in arid regions. Shares of ACWA Power (SA14C0P13483, ticker 2082) traded at 427.80 Saudi riyals on the Saudi Stock Exchange on June 12, 2026.

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