Energy-efficient Desalination Market - Global Industry Size, Share, Trends, Opportunity, and Forecast, Segmented By Technology (Reverse Osmosis, Electrodialysis, Nanofiltration, Ultrafiltration, Multi-Stage Flash Distillation, Multi-Effect Distillation), By Energy Source (Renewable Energy, Conventional Energy, Hybrid Systems), By End-Use Industry (Municipal, Industrial, Military & Defense, Construction, Others), By Region & Competition, 2021-2031F

Key Insights	Details
Forecast Period	2027-2031
Market Size (2025)	USD 4.98 Billion
CAGR (2026-2031)	9.34%
Fastest Growing Segment	Nanofiltration
Largest Market	North America
Market Size (2031)	USD 8.51 Billion

Market Overview

The Global Energy-efficient Desalination Market is projected to grow from USD 4.98 Billion in 2025 to USD 8.51 Billion by 2031 at a 9.34% CAGR. Energy-efficient desalination encompasses advanced processes designed to remove salts and minerals from water sources with significantly reduced energy consumption compared to conventional methods. This market is primarily driven by escalating global water scarcity, exacerbated by population growth and climate change, necessitating alternative freshwater sources. Further supporting market expansion are continuous technological advancements, particularly in membrane-based systems and energy recovery devices, which enhance operational viability and lower environmental footprints. According to the International Desalination and Reuse Association (IDRA) Desalination & Reuse Handbook 2025–2026, installed global desalination capacity has increased by 40% since 2020, reflecting increased adoption due to these advancements.

Despite these drivers, a significant impediment to market expansion remains the substantial upfront capital expenditure required for developing and implementing sophisticated energy-efficient desalination plants. These systems involve complex engineering, high-performance membranes, and integration with advanced energy recovery solutions, leading to considerable initial investment costs.

Key Market Drivers

Policy and regulatory support
Government initiatives and stringent environmental regulations represent a pivotal force in accelerating the adoption of energy-efficient desalination technologies. Governments worldwide are increasingly implementing policies and offering financial incentives to promote sustainable water management and reduce the carbon footprint associated with water production. These regulatory frameworks often mandate lower energy consumption and reduced environmental impact, compelling industries and municipalities to invest in advanced, energy-efficient desalination solutions. For instance, the California Department of Water Resources on May 12, 2025, awarded $1 million for desalination projects under its Continuous Application Program 6, demonstrating direct support for such initiatives.

Growing demand and efficiency advances
Another significant driving factor is the rising industrial and municipal water demand, particularly in regions experiencing rapid urbanization and industrial growth. As freshwater resources become increasingly strained, reliable and sustainable alternative water sources are crucial. Energy-efficient desalination provides a viable solution by ensuring water security while mitigating operational costs and environmental concerns associated with high energy usage. According to SUEZ, construction for a seawater reverse osmosis desalination plant in Iloilo City, Philippines, began on April 7, 2025, which will supply 66,500 cubic meters of water daily to meet municipal needs using energy-efficient technologies. Furthermore, advancements continue to reduce the energy intensity of these systems, with the DESALRO 2.0 project in the Canary Islands achieving a low energy consumption of 1.794 kWh/m3 on February 26, 2025.

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Key Market Challenges

A significant impediment to market expansion for global energy-efficient desalination is the substantial upfront capital expenditure required for developing and implementing new plants. These projects demand considerable initial investments for complex engineering, high-performance membranes, and integrated energy recovery systems. This high financial outlay often deters potential investors and project developers, particularly in regions with limited financial resources or less developed financing frameworks. The typically extended payback periods associated with these investments further complicate securing project approval and funding. According to the International Desalination and Reuse Association (IDRA) in collaboration with the World Bank, in 2025, there was an annual spending shortfall of USD 131–140 billion for water and sanitation infrastructure globally, representing nearly double current public funding levels. This substantial funding gap directly impacts the ability to finance new energy-efficient desalination installations, thereby restricting their wider deployment and overall market growth.

Key Market Trends

The integration of renewable energy sources represents a significant trend in the global energy-efficient desalination market, enhancing the sustainability and economic viability of water production. This involves directly coupling desalination plants with power generated from solar or wind, thereby reducing reliance on fossil fuels and stabilizing operational costs in the long term. Such integration makes desalination more accessible for regions seeking energy independence and environmental stewardship. According to Elemental Water Makers, December 2025, solar-powered reverse osmosis systems achieve up to 70% energy savings compared to conventional desalination methods. This shift is critical for large-scale projects and smaller, off-grid applications, aligning with broader climate objectives.

Another prominent trend is the development of modular and decentralized desalination systems. These systems are characterized by their compact design, ease of deployment, and scalability, allowing for more flexible water solutions in diverse geographical and demand contexts. Modular units can be rapidly installed to address localized water scarcity, serving remote communities, emergency relief efforts, or specific industrial needs without the extensive infrastructure required by large centralized plants. According to Elemental Water Makers, December 2025, initial modular units with a capacity of 10,000 liters per day are expandable to 50,000 liters per day by adding solar panels and membrane modules. This approach minimizes distribution losses and offers a responsive method for enhancing water security.

Segmental Insights

Nanofiltration is emerging as the fastest-growing segment within the Global Energy-efficient Desalination Market. This rapid expansion is primarily driven by its inherent energy efficiency, operating at significantly lower pressures compared to traditional reverse osmosis systems, which translates to reduced operational costs. Nanofiltration effectively removes a broad spectrum of contaminants, including various dissolved salts and organic matter, while offering higher water recovery rates and extended membrane lifespan due to decreased fouling tendencies. Its versatility as a standalone treatment or as an effective pretreatment stage for more intensive desalination processes also contributes to its increasing adoption in securing sustainable freshwater supplies.

Regional Insights

North America stands as the leading region in the Global Energy-efficient Desalination Market, primarily driven by its advanced technological adoption and robust focus on sustainability. The region faces increasing water scarcity, particularly in arid areas like the southwestern United States, necessitating reliable freshwater sources. Stringent environmental regulations and a commitment to reducing carbon footprints actively encourage the deployment of energy-efficient desalination technologies. Furthermore, North America benefits from a well-established infrastructure, a strong industrial base, and significant government support for low-energy water treatment, facilitating the widespread implementation of advanced desalination solutions across both municipal and industrial sectors.

Recent Developments

• In March 2026, Energy Recovery, a global leader in energy-efficient technology, unveiled its PX Q650 Pressure Exchanger. This next-generation energy recovery device (ERD) was specifically engineered to address the scalability, efficiency, and reliability demands of the desalination industry. The PX Q650 offered increased flow capacity and improved efficiency with reduced mixing, building upon the proven isobaric design of its predecessors. This advancement aimed to enable the lowest specific energy consumption for large-scale seawater desalination projects, requiring fewer devices and a smaller operational footprint, thereby contributing to significant reductions in operating costs.
• In February 2026, Veolia Water Technologies and SBM Offshore announced a partnership to develop and deploy floating desalination units. This collaboration combined Veolia's reverse osmosis desalination and advanced water-treatment technologies with SBM Offshore's engineering, construction, installation, and operational expertise in offshore infrastructure. The proposed freshwater floating production units are intended for nearshore installation, scalable according to demand, and each capable of producing up to 100,000 cubic meters of freshwater daily. This initiative was positioned as a quicker and more adaptable alternative to conventional onshore desalination plants, targeting coastal and water-stressed regions.
• In January 2026, OceanWell, a California-based startup, launched an energy-efficient desalination system in Nice, France. This innovative system utilized modular "pods" deployed underwater, harnessing natural water pressure to reduce energy consumption by up to 40 percent compared to traditional desalination methods. The technology was designed to mitigate the environmental impact on aquatic life by avoiding typical intake disruptions and eliminating toxic brine disposal. The collaboration with Eau d'Azur in Europe expanded OceanWell's presence, aiming to advance sustainable water solutions beyond its North American operations, where a commercial-scale water desalination facility was in its planning stages.
• In October 2025, a strategic alliance formed between IonClear, a United States-based membrane technology company, and INEXA Aqua Services, a Spanish environmental engineering firm, aimed to enhance energy efficiency within the desalination sector. This collaboration focused on developing a new class of water treatment systems. INEXA contributed expertise in seawater desalination plant design and performance optimization, while IonClear provided innovations in reverse osmosis and nanofiltration membrane technology. The partnership sought to design and build systems enabling the production of more clean water with reduced energy consumption, extended equipment lifespan, and minimized environmental impact across global desalination, reclamation, and reuse applications.

Key Market Players

• Veolia Water Technologies
• SUEZ Water Technologies & Solutions
• IDE Technologies Ltd.
• Xylem Inc.
• DuPont Water Solutions
• Toray Industries, Inc.
• Koch Separation Solutions
• Aquatech International LLC
• Doosan Enerbility Co., Ltd.

By Technology	By Energy Source	By End-Use Industry	By Region
Reverse Osmosis Electrodialysis Nanofiltration Ultrafiltration Multi-Stage Flash Distillation Multi-Effect Distillation	Renewable Energy Conventional Energy Hybrid Systems	Municipal Industrial Military & Defense Construction Others	North America Europe Asia Pacific South America Middle East & Africa

Report Scope:

In this report, the Global Energy-efficient Desalination Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

• Energy-efficient Desalination Market, By Technology:

• Reverse Osmosis
• Electrodialysis
• Nanofiltration
• Ultrafiltration
• Multi-Stage Flash Distillation
• Multi-Effect Distillation

• Energy-efficient Desalination Market, By Energy Source:

• Renewable Energy
• Conventional Energy
• Hybrid Systems

• Energy-efficient Desalination Market, By End-Use Industry:

• Municipal
• Industrial
• Military & Defense
• Construction
• Others

• Energy-efficient Desalination Market, By Region:

• North America
• United States
• Canada
• Mexico
• Europe
• France
• United Kingdom
• Italy
• Germany
• Spain
• Asia Pacific
• China
• India
• Japan
• Australia
• South Korea
• South America
• Brazil
• Argentina
• Colombia
• Middle East & Africa
• South Africa
• Saudi Arabia
• UAE