Solar and wind-coupled desalination providers, off-grid and hybrid systems with storage and variable-load RO.

    Find a Renewable-Powered Desalination Provider

    Matched providers: 60

    Top countries: United Kingdom, United States

    Popular technologies: Reverse Osmosis (RO), Cartridge Filters

    Renewable-Powered Desalination: Solar PV, Wind, and Energy Storage Integration for Off-Grid Plants

    Renewable energy desalination (RE-desal) combines desalination technology (primarily reverse osmosis) with photovoltaic, wind, or hybrid power generation to produce freshwater from seawater or brackish water without fossil fuel dependence. The dominant RE-desal configuration is solar PV + BESS (battery energy storage system) + RO: PV arrays generate DC power (converted to AC via inverters), BESS (lithium iron phosphate, LFP, chemistry preferred for cyclic duty, 3,000 to 6,000 cycles at 80 percent DoD) stores excess generation and powers RO during night or low-irradiance periods. Seawater RO (SWRO) specific energy consumption: conventional grid-powered SWRO with energy recovery device (ERD) at 7 to 8 kWh/m3 product; high-efficiency SWRO (Danfoss iSave, ERI PX series ERD) at 2.5 to 4.0 kWh/m3. Small-scale solar SWRO (Spectra Watermakers, Pert, SolarSpring) at 2.5 to 5.0 kWh/m3. LCOE (Levelised Cost of Energy) for utility-scale solar PV in MENA region: USD 0.02 to 0.03 per kWh (2024); enabling LCOW (Levelised Cost of Water) below USD 0.50 per m3 at large scale.

    Variable renewable energy presents operational challenges for RO systems designed for steady-state operation. Approaches to RE variability management: (1) Battery buffering: size BESS to maintain RO feed pressure within plus or minus 10 percent of design point (preventing membrane damage from pressure cycling, which can reduce membrane life by 30 to 50 percent); (2) Variable-recovery RO operation: modulate feed pressure and recovery rate with available solar power (VFD-controlled HP pump); Danfoss iSave and ERI PX ERDs allow variable operation down to 40 percent of design flow; (3) Batch/cyclic operation: SWRO operates during daylight only (16 to 20 hours), with concentrate discharged and fresh sea water feed each cycle; increases membrane replacement frequency; (4) Wind-RO direct coupling (Canary Islands SDAWES project): wind turbine hydraulically coupled to SWRO HP pump via flywheel; demonstrated production of 9 m3/hour at 50 kW wind input. Hybrid solar-wind-BESS configurations reduce BESS requirement by 30 to 50 percent compared to solar-only by complementing diurnal and seasonal generation profiles.

    Cost and scale of RE-desal projects: small-scale (100 to 10,000 m3/day): solar PV + BESS + BWRO or SWRO; suitable for island communities, remote settlements, refugee camps; CAPEX USD 500 to 2,000 per m3/day capacity; OPEX USD 0.50 to 2.00 per m3 (membrane replacement, chemicals, battery cycling losses). Large-scale (100,000 to 1,000,000+ m3/day): utility-scale RE-desal; Neom Sindalah project (Saudi Arabia, 500,000 m3/day SWRO powered entirely by solar and wind), ACWA SWRO in Saudi Arabia. Leading RE-desal companies: IDE Technologies, Veolia, Acciona Agua, Doosan Enpure, Abengoa Water, WaterGen, Elemental Water Makers, Mascara Renewable Water. IDA (International Desalination Association) Water Security Handbook (2022) and Global Water Intelligence (GWI) Desalination Markets report track deployment globally. WHO technical note on RE-desal (2021) addresses water quality and system reliability for humanitarian applications.

    Frequently Asked Questions

    What is the energy consumption of solar-powered desalination?

    Specific energy consumption (SEC) for RE-powered desalination varies by technology and scale: SWRO (seawater, 35,000 mg/L TDS): 2.5 to 5.0 kWh/m3 product for efficient systems with ERD; small-scale solar SWRO without ERD: 4 to 8 kWh/m3. BWRO (brackish water, 2,000 to 10,000 mg/L TDS): 0.5 to 1.5 kWh/m3 (much lower than seawater due to lower osmotic pressure). Including battery round-trip losses (LFP 90 to 95 percent round-trip efficiency) and inverter losses (97 to 98 percent): total system SEC is 10 to 20 percent higher than membrane SEC alone. Solar irradiation sizing: at 5 peak sun hours per day (typical Middle East/North Africa), 1 kWp PV generates approximately 5 kWh/day; for a 100 m3/day SWRO at 4 kWh/m3: daily energy demand 400 kWh; PV array required 80 kWp plus BESS. Emerging low-energy processes: capacitive deionisation (CDI) at 0.1 to 1.0 kWh/m3 for low-TDS brackish water; membrane capacitive deionisation (MCDI) commercially available from Voltea.

    Can RO desalination run directly from solar PV without batteries?

    Direct solar-to-RO without batteries is technically feasible but presents operational challenges. During daylight hours: PV output tracked by MPPT charge controller or VFD-controlled HP pump; as irradiance varies, RO system must tolerate flow variation of 50 to 100 percent of design. Issues with direct solar RO: (1) Low-irradiance starts (morning/evening): pump may not develop sufficient pressure to overcome osmotic pressure (28 to 32 bar for seawater at 35 g/L); minimum turndown for RO membranes is approximately 40 to 50 percent of design flux without irreversible compaction; (2) Rapid pressure fluctuations: cloud transients cause pressure spikes and drops that stress membrane elements and increase fouling rate; (3) Zero production at night: water storage compensates if adequate tank volume is provided. Projects operating direct solar-RO: Elemental Water Makers (Netherlands) has deployed direct solar BWRO in rural Africa and islands - using a hydraulic energy storage buffer (pressure accumulator) rather than batteries to smooth pressure transients. For reliable supply, battery buffering for 4 to 8 hours is standard practice.

    What battery storage capacity is needed for renewable desalination?

    Battery energy storage system (BESS) sizing for solar + SWRO: depends on desired operating hours per day (24-hour vs daylight-only operation) and renewable generation profile. For 24-hour operation in MENA (5 to 7 peak sun hours/day): daily production target 1,000 m3, SEC 4 kWh/m3: daily energy 4,000 kWh; solar generation in 6 peak sun hours: PV array 700 kWp generates 4,200 kWh (with 5 percent system losses); BESS for 18 hours of night operation: 1,000 m3/day / 24 hrs times 18 hrs times 4 kWh/m3 = 3,000 kWh usable BESS capacity. BESS sizing at 80 percent DoD: total BESS = 3,000 / 0.8 = 3,750 kWh. At USD 250 to 400 per kWh (LFP utility BESS, 2024 pricing): BESS CAPEX USD 940,000 to 1,500,000. For daylight-only operation (6 to 8 hours): BESS required only for transient smoothing (50 to 100 kWh), dramatically reducing cost. Wind + solar hybrid reduces BESS requirement by 30 to 50 percent by providing complementary generation profiles.

    Which countries lead in renewable desalination deployment?

    Saudi Arabia leads globally in RE-desal scale: NEOM Project Sindalah targeting 500,000 m3/day entirely renewable-powered; ACWA Power Jubail project (1,400,000 m3/day overall capacity with increasing RE integration). UAE: Taweelah IWP (909,200 m3/day RO, largest RO plant in world, 2023) incorporates solar co-generation. Spain (Canary Islands): Solar Energia Azul and Guia Renovable projects; long history of wind-RO research (SDAWES project, 1990s). Australia: Sundrop Farms solar-desal for greenhouse agriculture; Western Australia remote community RE-desal. India: MNRE promotes solar desal in coastal and island communities; IIT Madras solar membrane distillation research. Pacific Islands (Maldives, Tuvalu, Solomon Islands): small-scale solar SWRO increasingly replacing diesel-powered units for island freshwater security. Global RE-desal capacity growing at 15 to 20 percent annually (IDA 2023 data); RE-powered plants represent approximately 3 to 5 percent of total global desalination capacity but are increasing rapidly as solar PV and BESS costs fall.

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    Renewable-Powered Desalination Companies

    Solar and wind-coupled desalination providers, off-grid and hybrid systems with storage and variable-load RO.

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    This page is a good fit if you need:

    • Reverse Osmosis (RO) or Cartridge Filters capabilities
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    Find a Renewable-Powered Desalination Provider

    Showing 1-20 of 60

    60 results from 60 matched providers

    Brine Consulting logo

    Brine Consulting

    Verified
    Netherlands1-50 employees
    Mechanical Vapor Recompression (MVR) · Atmospheric Evaporator · Spray Evaporator +130 more
    apac · china · europe +3 more

    BRINE CONSULTING delivers senior-level strategy, technical design, and actionable insight across the full lifecycle of water-related challenges. We support clients with advisory and due diligence, advanced brine management and resource recovery, industrial and municipal water reuse, and MLD/ZLD systems. Our team also leads ESG and climate-resilience strategy, innovation scouting, and international development and PPP advisory. With deep specialization in desalination, brine valorization, circular economy models, and high-impact infrastructure, we help organizations turn water and waste streams into opportunities, providing clear thinking, rapid delivery, and solutions built for real-world results.

    Activated Carbon Filtration
    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    +85 more
    manufacturing
    energy-production
    Hainan Litree Water Purification Technology Industry Co., Ltd. logo

    Hainan Litree Water Purification Technology Industry Co., Ltd.

    Verified
    China200+ employees
    Tubular Ultrafiltration Units · Hollow Fiber UF Modules · Flat Sheet UF Membranes +17 more
    apac · china · europe +3 more

    Litree: Pioneering Ultrafiltration for a Water-Secure World Founded in 1992, Litree has dedicated 30+ years to redefining water purification through ultrafiltration (UF) membrane technology—our core expertise and passion立升(Litree). As a global high-tech enterprise rooted in independent innovation, we’ve evolved from a membrane R&D startup to one of the world’s leading water problem solvers, with over 146 core patents and state-of-the-art manufacturing hubs in Haikou and Suzhou, China立升(Litree). Our signature hollow fiber UF membranes are engineered to deliver unmatched performance: 0.01μm precision removes 99.99% of bacteria, viruses, and contaminants while preserving essential minerals—striking the perfect balance between purity and health立升(Litree). This technology powers our diverse solutions, from residential whole-house systems to large-scale municipal projects and industrial wastewater treatment, all designed for sustainability and cost-efficiency. What truly sets us apart is our commitment to making safe water accessible. We’ve completed projects serving 50,000+ residents with centralized purification systems that cut construction costs and footprint by 50% compared to traditional setups—proof that advanced technology can also be affordable. Today, our solutions reach 60+ countries, supporting 3,000+ industrial clients and millions of households worldwide. At Litree, water isn’t just our business—it’s our mission. We believe every drop matters, and we’ll keep pushing boundaries to create a future where clean, safe water is a universal right, not a privilege

    Ultrafiltration (UF) Systems
    Membrane Filtration Technologies
    pH Adjustment and Neutralization
    +64 more
    agriculture
    manufacturing
    Hangzhou Realize Technology Co., LTD. logo

    Hangzhou Realize Technology Co., LTD.

    Verified
    China1-50 employees
    Ultrasonic Cavitation Systems · Conventional Activated Sludge · SBR, MBR, IFAS +3 more
    china

    HANGZHOU REALIZE TECHNOLOGY CO., LTD. is a technology enterprise. The company collaborates with domestic and international universities such as Beijing University of Technology, Tsinghua University, and Berlin University of Technology to address the challenges of enhancing anaerobic efficiency and nitrogen removal in high-ammonia nitrogen wastewater. The core technologies foucs on energy-saving denitrification and enhanced green methane production. These two technologies can increase production efficiency of green methane by 20% and reduce costs of wastewater denitrification by 60%.

    Process Water Treatment
    Wastewater Treatment
    Advanced Treatment Technologies
    +8 more
    manufacturing
    energy-production
    GE

    GTE ELETTROMECCANICA

    Italy51-200 employees
    Reverse Osmosis (RO) · Nanofiltration (NF) · Ultrafiltration (UF) +2 more
    europe

    GTE ELETTROMECCANICA specializes in providing advanced water treatment solutions, including equipment manufacturing and technology provision for utilities and industrial applications. Based in Italy, the company serves the European market with a focus on desalination, ultra-pure water systems, and membrane technologies.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Industrial WWTPs
    +1 more
    Utilities
    Waste Management and Remediation
    Liquid X logo

    Liquid X

    Verified
    United Arab Emirates1-50 employees
    Granular Activated Carbon (GAC) Filters · GO–Polymer Composites · Cartridge Filters
    mea

    Liquid X is a water technology consultancy and commercialization platform focused on accelerating the deployment of next-generation filtration solutions, with a core emphasis on graphene-based water treatment. Founded to address the gap between breakthrough innovation and real-world implementation, Liquid X operates at the intersection of advanced material science, water infrastructure, and market deployment. While significant advances in water technologies exist globally, many remain confined to laboratories or early-stage ventures. Liquid X bridges this gap by identifying, validating, and commercializing high-impact solutions—particularly graphene-based filtration systems—within the GCC and wider MENA region. Our consultancy model is built around a full lifecycle approach: from technology scouting and technical evaluation to pilot design, validation, and scaled deployment. We work with asset owners, governments, and enterprises to translate emerging technologies into practical, site-ready solutions. This includes designing pilot programs with measurable performance metrics, enabling data-driven decision-making, and ensuring that innovations are proven under real operating conditions before scale-up. A key focus of Liquid X is the commercialization of graphene-based water filters. Graphene, a two-dimensional material with exceptional strength, permeability, and adsorption capacity, has the potential to fundamentally transform water treatment. Its nano-scale structure allows precise separation of contaminants while enabling faster water flow and lower energy consumption compared to conventional systems. Through strategic partnerships with innovators, researchers, and manufacturers, Liquid X is actively working to bring graphene filtration technologies from concept to market. These systems are being developed to address some of the most critical water challenges, including the removal of PFAS and emerging contaminants, heavy metals, dissolved solids, and industrial pollutants—while significantly reducing waste and energy intensity associated with traditional technologies such as reverse osmosis. Our role extends beyond technology development. Liquid X supports the full commercialization journey, including: Technical due diligence and performance validation Pilot implementation and third-party verification Integration with existing infrastructure Development of scalable deployment models Coordination with EPC contractors, facility managers, and regulators Ongoing monitoring, compliance, and optimization By operating as a vendor-agnostic platform, we ensure that solutions are selected based on performance, suitability, and long-term value—not vendor bias. The MENA region faces some of the world’s most acute water challenges, including scarcity, high desalination dependence, and rising energy costs. Liquid X is positioned to introduce more efficient, decentralized, and sustainable alternatives through advanced filtration technologies. Graphene-based systems, in particular, offer the potential for lightweight, modular, and energy-efficient treatment solutions that can be deployed at scale across residential, commercial, and industrial applications. At its core, Liquid X is not just a consultancy—it is an enabler of the next generation of water infrastructure. By combining deep regional expertise with global innovation networks, we are helping transform how water is treated, distributed, and consumed. Our mission is to accelerate the transition from legacy, resource-intensive systems to smarter, more sustainable water solutions—unlocking the full potential of graphene and other advanced materials to build a more water-secure future.

    Activated Carbon Filtration
    Nanofiltration (NF) Systems
    Point-of-Use (POU) Filtration Systems
    +11 more
    food-beverages
    hospitality-tourism
    GX

    Guangdong Xinjieyuan Environmental Protection Technology Co., Ltd.

    Verified
    China51-200 employees
    reverse osmosis · desalination · ultrafiltration +4 more
    north-america · latam · europe +3 more

    Guangdong Xinjieyuan Environmental Technology Co., Ltd. is a professional manufacturer specializing in industrial water purification equipment. We focus on RO, ultrafiltration, EDI and desalination systems, holding ISO & CE certifications. With over 10 years of technical experience, we supply customized pure water solutions for food, pharmacy, agriculture and aquaculture, supporting OEM & ODM and exporting to global markets. All units adopt top-grade membrane and pump parts, with strict factory testing and one-year full warranty.

    Ultrafiltration (UF) Systems
    Reverse Osmosis (RO) Systems
    Reverse Osmosis (RO) Desalination
    +3 more
    manufacturing
    energy-production
    OSMO SISTEMI S.r.l. logo

    OSMO SISTEMI S.r.l.

    Italy51-200 employees
    Reverse Osmosis (RO) · Microfiltration (MF) · Ultrafiltration (UF) +2 more
    apac · europe · mea

    OSMO SISTEMI S.r.l. is a leader in water treatment technologies, providing solutions for treating various water sources using membrane separation technologies. They offer cost-effective, reliable water treatment plants and services to diverse sectors worldwide, focusing on desalination and water pollution reduction.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Microfiltration (MF)
    +1 more
    Utilities
    Manufacturing
    Ecosystems International logo

    Ecosystems International

    Verified
    Indonesia51-200 employees
    Flat Sheet Microfiltration Units · Hollow Fiber MF Systems · Ceramic Microfiltration Modules +80 more
    apac · china · europe +3 more

    PT Ecosystems International (PT ESI) was established at Jakarta on 21st November 2006. We are an industrial effluent treatment systems integrator specializing in electrocoagulation (EC), a unique waste water treatment profile. PT ESI has capabilities in designing complete waste water treatment solutions by combining various effluent treatment systems such as the electro-coagulation, biological, chemical processes and membrane filtration, offering its customers a wide and comprehensive range of solutions, tailored to suit their various needs – ranging from basic effluent treatment for discharge to effluent recycling for water reuse. The Company is experienced in handling the design, engineering, procurement, construction and operation of new Effluent Treatment Plants (“ETP”) and possesses expertise in retrofitting existing ETP to increase the flow rate and treatment capability without any major infrastructure increase PT ESI is also a premier waste water treatment service company specializing in handling waste water generated from Exploration (Drilling) and Produced Water. Customers in Indonesia include major Oil & Gas companies such as Pertamina, Exxon, Chevron, Petro-China and Medco. Operations in Indonesia are provided by both mobile and fixed units. At drill sites where waste-water recycling is required, PT ESI supplement these treatment units with skid mounted mobile Reverse Osmosis systems. The technologies and solutions employed by PT ESI are developed in-house and examples of these are its proprietary Trident™ Electro Contaminant Removal (“ECR”) system, the Stage Contaminant Removal (“SCR”) process and Mobile On-Site Waste-Water Treatment (“OWT”) units

    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    Multi-media Filtration (MMF) Systems
    +63 more
    agriculture
    manufacturing
    Gi Aqua , Water as a Service logo

    Gi Aqua , Water as a Service

    Verified
    Saudi Arabia51-200 employees
    Advanced Oxidation Processes (AOPs) · Chemical Precipitation · Membrane Bioreactors (MBR) +3 more
    apac · europe · mea

    GI WAAS delivers cutting-edge water and wastewater solutions using advanced nanotechnology and zero total discharge solution sets industry standards. Our mission is to provide smart, sustainable, and decentralized treatment systems. We are committed to circular economy principles and reducing environmental impact. Our holistic approach provides comprehensive, tailor-made solutions that are designed to meet the specific needs of each client

    Water-as-a-Service (WaaS) Contracts
    Public-Private Partnerships (PPPs)
    Technology Leasing and Rental Solutions
    +13 more
    agriculture
    manufacturing
    Devram International logo

    Devram International

    Verified
    India1-50 employees
    Granular Activated Carbon (GAC) Filters · Fixed Bed Activated Carbon Adsorbers · Powdered MOF Adsorbent Systems +19 more
    apac · mea

    DEVRAM INTERNATIONAL, headquartered in Surat, India, is a pioneering enterprise specializing in Snow and Rainwater Management with advanced contamination reduction abilities for storage and artificial groundwater recharge. Established as the commercial wing of Shree Someshwar Education Trust (SSET), DEVRAM INTERNATIONAL is driven by a mission to provide tech-enabled, nature-based solutions that address the world’s most pressing water and climate challenges. The company’s work integrates Integrated Water Resources Management (IWRM) principles and contributes across the source-to-sea water management cycle, ensuring holistic restoration of the global water cycle. Its innovative portfolio includes rainwater harvesting systems, stormwater management, aquifer recharge, artificial glaciers, desert trenches, rooftop water filtration, and green infrastructure models. These interventions directly reduce salinity in soils and aquifers, restore ecological balance, and enhance resilience to droughts, floods, and climate change. As the commercial promoter of the Global Rainwater Management Program (GRMP), DEVRAM INTERNATIONAL advances the vision of GRMP as a Global Common Minimum Program (GCMP) for nations and international bodies. GRMP demonstrates how rainwater and snowwater retention can restore entire natural cycles, while delivering unmatched benefits across the Sustainable Development Goals (SDGs). Alignment with the SDGs • SDG 2 (Zero Hunger): By reducing soil salinity, supporting organic farming, and ensuring water availability for agriculture, GRMP safeguards food security. • SDG 6 (Clean Water & Sanitation): DEVRAM’s recharge structures and contamination reduction technologies guarantee safe, sustainable drinking water for communities. • SDG 7 (Affordable & Clean Energy): By reducing dependency on energy-intensive desalination, GRMP lowers national energy bills and improves hydropower capacity. • SDG 9 (Industry, Innovation & Infrastructure): DEVRAM integrates nature-based water infrastructure with industrial operations, reducing OPEX and water footprints. • SDG 11 (Sustainable Cities & Communities): Through stormwater management and aquifer recharge, GRMP mitigates urban flooding and secures municipal supplies. • SDG 12 (Responsible Consumption & Production): Promotes a circular water economy, reusing wastewater, biogas from organic waste, and aligning with industrial CSR. • SDG 13 (Climate Action): By lowering GHG emissions and cooling local climates through water cycle restoration, GRMP strengthens resilience to global warming. • SDG 14 (Life Below Water): Free-flowing rivers, improved aquaculture, and reduced dam-related aquatic pollution support marine and freshwater ecosystems. • SDG 15 (Life on Land): DEVRAM’s interventions restore wetlands, mangroves, peatlands, and biodiversity-rich ecosystems, addressing land degradation. • SDG 17 (Partnerships for the Goals): The company actively collaborates with UN agencies, governments, World Bank programs, and private investors to scale GRMP globally. Founders and Leadership Dhaval Pandya, Co-Founder of DEVRAM INTERNATIONAL and CEO of SSET, is a globally recognized sustainability leader. He co-developed the Global Rainwater Management Program (GRMP), recognized by the United Nations Global Water Partnership (GWP) and the Government of India. As a Technical Committee Member (WRD03) of the Bureau of Indian Standards (BIS), he contributes to national water policy frameworks. His work is featured in UNCCD IWRM Action Hub and global forums like COP, Stockholm World Water Week, and World Bank SDG reviews. Manalika Pandya, Co-Founder, plays a critical role in embedding social, gender, and educational dimensions into GRMP. Her focus on women empowerment, local capacity building, and community-driven adoption ensures the program’s sustainability at the grassroots. Impact and Recognition DEVRAM INTERNATIONAL has piloted groundbreaking projects such as: Kawas Village (Gujarat, India): A GRMP model village achieving self-reliance in water, organic farming, and biogas, while resolving conflicts with industries. Delhi’s Water Paradox (Figshare Study): Shows how GRMP can solve megacity water crises without costly desalination or dams. GSECL Surat Project: Demonstrates reduced industrial water costs through GRMP recharge planning, aligning profitability with SDG and ESG goals. These projects show GRMP’s potential to reduce industrial and municipal water supply costs by up 60%, avoid massive investments in desalination and dams, and enable nations to achieve water sovereignty. Core Competencies • Rainwater & Snowwater Harvesting • Artificial Groundwater Recharge & Salinity Reduction • Stormwater Management & Urban Flood Control • Transboundary Water Cooperation • IWRM & Source-to-Sea Water Governance • AI-Enabled Hydrological Modelling & Policy Analytics • Environmental Services Restoration (Wetlands, Mangroves, Peatlands) • Circular Economy.

    Activated Carbon Filtration
    Granular Activated Carbon (GAC) Filters
    Multi-media Filtration (MMF) Systems
    +25 more
    manufacturing
    utilities
    Chemipol S.A. logo

    Chemipol S.A.

    Spain51-200 employees
    Coagulation/Flocculation · Chemical Precipitation · Cartridge Filters
    europe

    Chemipol S.A. is a leading manufacturer and supplier of biocides, additives, and specialty chemicals, serving diverse industries such as utilities, manufacturing, and energy production. Based in Spain, Chemipol provides advanced water treatment solutions, including desalination and wastewater treatment technologies, across Europe.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Microfiltration (MF)
    +1 more
    Utilities
    Manufacturing
    Seven Seas Water Group logo

    Seven Seas Water Group

    United States
    Reverse osmosis desalination · Brackish water reverse osmosis (BWRO) · Seawater desalination +3 more
    North America

    Seven Seas Water Group is a fully integrated water and wastewater solutions provider specializing in Water-as-a-Service delivery. The company designs, builds, finances, and operates treatment facilities for municipal, commercial, and industrial clients globally. Their offerings address water scarcity through desalination and sustainable water reuse technologies.

    Water-as-a-Service (WaaS)
    Lease Plant Program
    Water treatment design and operations
    +4 more
    Cambi ASA logo

    Cambi ASA

    Norway
    CambiTHP thermal hydrolysis process · Advanced anaerobic digestion · Modular batch reactors +2 more
    Europe

    Cambi ASA, headquartered near Oslo, Norway, pioneered thermal hydrolysis for sewage sludge and organic waste, commissioning its first full-scale plant in 1996. The CambiTHP process pretreats sludge ahead of anaerobic digestion to boost biogas yield by up to 50 percent, triple digester throughput, and halve final biosolids volume, turning municipal and industrial waste streams into renewable energy and Class A biosolids worldwide.

    Thermal hydrolysis plant supply
    Anaerobic digestion optimization
    Sludge-to-energy project consulting
    +2 more
    Solar Water Solutions logo

    Solar Water Solutions

    Finland
    Solar-powered reverse osmosis · Photovoltaic energy systems · Battery energy storage +2 more
    Europe

    Solar Water Solutions Oy is a Finnish clean-technology manufacturer headquartered in Espoo, Finland, that builds solar-powered reverse osmosis desalination systems converting seawater or brackish water into drinking water using photovoltaic energy instead of diesel or grid electricity. Its modular, plug-and-play systems serve municipal water utilities, remote communities, resorts, agriculture, emergency response, and off-grid residential and industrial users. Systems handle salinity up to 36,000 mg/L TDS at capacities to 1,000 m3 per day, with typical energy use of 1 to 2 kWh per m3. The company develops and manufactures systems jointly with German solar pump maker LORENTZ.

    Seawater reverse osmosis desalination
    Brackish water reverse osmosis desalination
    Solar-direct, battery, and grid-tied power configuration
    +2 more
    Aquatech logo

    Aquatech

    United States
    AVMD Advanced Vacuum Membrane Distillation (thermal desalination) · HERO and ARRO reverse osmosis systems · BioMOD membrane bioreactor and anaerobic systems +2 more
    North America

    Aquatech is a global water and process technology company headquartered in Canonsburg, Pennsylvania, United States, focused on solving water scarcity and ensuring critical minerals security. With more than 43 years of operation, over 2,000 installations worldwide, and 700 plus water experts globally, the company treats roughly 1.6 billion gallons of water per day. Its core areas include water reuse and zero liquid discharge, desalination, industrial water treatment, wastewater management, and critical minerals recovery such as lithium extraction from brines. Aquatech delivers mobile water solutions, design build own operate and maintain (DBOOM) contracts, operations and maintenance support, aftermarket retrofits, and AI powered digital optimization.

    Water reuse and zero liquid discharge systems
    Desalination plant design and delivery
    Industrial water and wastewater treatment
    +2 more
    Fluence logo

    Fluence

    United States
    MABR (Membrane Aerated Biofilm Reactor) · Aspiral Flex modular systems · Reverse osmosis (RO) +4 more
    North America

    Fluence develops modular water and wastewater treatment solutions for municipal, industrial, and decentralized applications. The company offers containerized systems engineered for operational efficiency and rapid deployment, serving diverse sectors including food and beverage, desalination, and waste-to-energy.

    Municipal water and wastewater treatment
    Industrial water treatment and desalination
    Water reuse and recycling solutions
    +4 more
    Clean TeQ Water logo

    Clean TeQ Water

    Australia
    CIF continuous ionic filtration · CLEAN-IX metal recovery · DESALX membrane-free desalination +2 more
    Asia-Pacific

    Clean TeQ Water, headquartered in Mount Waverley, Victoria, Australia, develops and delivers advanced water treatment and resource recovery technologies. Its portfolio includes CIF continuous ionic filtration, CLEAN-IX metal recovery, DESALX membrane-free desalination, EVAPX low-energy evaporation, and PHOSPHIX phosphorus recovery, applied to zero and minimum liquid discharge, brackish desalination, and metals recovery via EPC and build-own-operate models.

    Engineering, procurement and construction
    Build, own, operate water plants
    Metal extraction and recovery
    +2 more
    B&P Water Technologies logo

    B&P Water Technologies

    Italy
    Reverse osmosis (RO) systems · Membrane bioreactor (MBR) · Moving bed biofilm reactor (MBBR) +3 more
    Europe

    B&P Water Technologies is an Italian engineering firm specializing in design, manufacturing, and supply of water treatment and potabilization systems. The company delivers customized, pre-assembled solutions for desalination, wastewater treatment, and industrial water purification across multiple sectors and applications.

    Seawater desalination plants
    Brackish water reverse osmosis systems
    Industrial wastewater treatment
    +4 more
    AMPAC USA logo

    AMPAC USA

    United States
    Reverse osmosis (RO) filtration · Seawater reverse osmosis (SWRO) · Electrodeionization (EDI) +3 more
    North America

    AMPAC USA delivers advanced water purification systems for residential, commercial, and industrial applications. The company specializes in reverse osmosis technology, seawater desalination, and custom water treatment solutions for harsh environments globally, headquartered in Woods Cross, UT.

    Commercial and industrial reverse osmosis system design
    Seawater desalination and watermaker installation
    Water treatment consultation and engineering support
    +3 more
    S

    SolarPure

    United States
    Ion exchange resin softening · Activated coconut shell carbon filtration · KDF media filtration +1 more
    North America

    SolarPure is a United States company based in Longwood, Florida that produces solar-powered water treatment and conditioning systems for homes and businesses. The company markets itself as the original solar-powered water treatment system, eliminating energy consumption while removing contaminants such as lead, chlorine, bacteria, sulfur, fluoride, nitrates, and iron through custom-fitted filtration and softening media.

    Free water testing and analysis
    Custom water filtration system installation
    Water softening and conditioning system sales
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    Renewable-Powered Desalination: Solar PV, Wind, and Energy Storage Integration for Off-Grid Plants

    Renewable energy desalination (RE-desal) combines desalination technology (primarily reverse osmosis) with photovoltaic, wind, or hybrid power generation to produce freshwater from seawater or brackish water without fossil fuel dependence. The dominant RE-desal configuration is solar PV + BESS (battery energy storage system) + RO: PV arrays generate DC power (converted to AC via inverters), BESS (lithium iron phosphate, LFP, chemistry preferred for cyclic duty, 3,000 to 6,000 cycles at 80 percent DoD) stores excess generation and powers RO during night or low-irradiance periods. Seawater RO (SWRO) specific energy consumption: conventional grid-powered SWRO with energy recovery device (ERD) at 7 to 8 kWh/m3 product; high-efficiency SWRO (Danfoss iSave, ERI PX series ERD) at 2.5 to 4.0 kWh/m3. Small-scale solar SWRO (Spectra Watermakers, Pert, SolarSpring) at 2.5 to 5.0 kWh/m3. LCOE (Levelised Cost of Energy) for utility-scale solar PV in MENA region: USD 0.02 to 0.03 per kWh (2024); enabling LCOW (Levelised Cost of Water) below USD 0.50 per m3 at large scale.

    Variable renewable energy presents operational challenges for RO systems designed for steady-state operation. Approaches to RE variability management: (1) Battery buffering: size BESS to maintain RO feed pressure within plus or minus 10 percent of design point (preventing membrane damage from pressure cycling, which can reduce membrane life by 30 to 50 percent); (2) Variable-recovery RO operation: modulate feed pressure and recovery rate with available solar power (VFD-controlled HP pump); Danfoss iSave and ERI PX ERDs allow variable operation down to 40 percent of design flow; (3) Batch/cyclic operation: SWRO operates during daylight only (16 to 20 hours), with concentrate discharged and fresh sea water feed each cycle; increases membrane replacement frequency; (4) Wind-RO direct coupling (Canary Islands SDAWES project): wind turbine hydraulically coupled to SWRO HP pump via flywheel; demonstrated production of 9 m3/hour at 50 kW wind input. Hybrid solar-wind-BESS configurations reduce BESS requirement by 30 to 50 percent compared to solar-only by complementing diurnal and seasonal generation profiles.

    Cost and scale of RE-desal projects: small-scale (100 to 10,000 m3/day): solar PV + BESS + BWRO or SWRO; suitable for island communities, remote settlements, refugee camps; CAPEX USD 500 to 2,000 per m3/day capacity; OPEX USD 0.50 to 2.00 per m3 (membrane replacement, chemicals, battery cycling losses). Large-scale (100,000 to 1,000,000+ m3/day): utility-scale RE-desal; Neom Sindalah project (Saudi Arabia, 500,000 m3/day SWRO powered entirely by solar and wind), ACWA SWRO in Saudi Arabia. Leading RE-desal companies: IDE Technologies, Veolia, Acciona Agua, Doosan Enpure, Abengoa Water, WaterGen, Elemental Water Makers, Mascara Renewable Water. IDA (International Desalination Association) Water Security Handbook (2022) and Global Water Intelligence (GWI) Desalination Markets report track deployment globally. WHO technical note on RE-desal (2021) addresses water quality and system reliability for humanitarian applications.

    Post your renewable-powered desalination project — get matched proposals

    Frequently Asked Questions

    What is the energy consumption of solar-powered desalination?

    Specific energy consumption (SEC) for RE-powered desalination varies by technology and scale: SWRO (seawater, 35,000 mg/L TDS): 2.5 to 5.0 kWh/m3 product for efficient systems with ERD; small-scale solar SWRO without ERD: 4 to 8 kWh/m3. BWRO (brackish water, 2,000 to 10,000 mg/L TDS): 0.5 to 1.5 kWh/m3 (much lower than seawater due to lower osmotic pressure). Including battery round-trip losses (LFP 90 to 95 percent round-trip efficiency) and inverter losses (97 to 98 percent): total system SEC is 10 to 20 percent higher than membrane SEC alone. Solar irradiation sizing: at 5 peak sun hours per day (typical Middle East/North Africa), 1 kWp PV generates approximately 5 kWh/day; for a 100 m3/day SWRO at 4 kWh/m3: daily energy demand 400 kWh; PV array required 80 kWp plus BESS. Emerging low-energy processes: capacitive deionisation (CDI) at 0.1 to 1.0 kWh/m3 for low-TDS brackish water; membrane capacitive deionisation (MCDI) commercially available from Voltea.

    Can RO desalination run directly from solar PV without batteries?

    Direct solar-to-RO without batteries is technically feasible but presents operational challenges. During daylight hours: PV output tracked by MPPT charge controller or VFD-controlled HP pump; as irradiance varies, RO system must tolerate flow variation of 50 to 100 percent of design. Issues with direct solar RO: (1) Low-irradiance starts (morning/evening): pump may not develop sufficient pressure to overcome osmotic pressure (28 to 32 bar for seawater at 35 g/L); minimum turndown for RO membranes is approximately 40 to 50 percent of design flux without irreversible compaction; (2) Rapid pressure fluctuations: cloud transients cause pressure spikes and drops that stress membrane elements and increase fouling rate; (3) Zero production at night: water storage compensates if adequate tank volume is provided. Projects operating direct solar-RO: Elemental Water Makers (Netherlands) has deployed direct solar BWRO in rural Africa and islands - using a hydraulic energy storage buffer (pressure accumulator) rather than batteries to smooth pressure transients. For reliable supply, battery buffering for 4 to 8 hours is standard practice.

    What battery storage capacity is needed for renewable desalination?

    Battery energy storage system (BESS) sizing for solar + SWRO: depends on desired operating hours per day (24-hour vs daylight-only operation) and renewable generation profile. For 24-hour operation in MENA (5 to 7 peak sun hours/day): daily production target 1,000 m3, SEC 4 kWh/m3: daily energy 4,000 kWh; solar generation in 6 peak sun hours: PV array 700 kWp generates 4,200 kWh (with 5 percent system losses); BESS for 18 hours of night operation: 1,000 m3/day / 24 hrs times 18 hrs times 4 kWh/m3 = 3,000 kWh usable BESS capacity. BESS sizing at 80 percent DoD: total BESS = 3,000 / 0.8 = 3,750 kWh. At USD 250 to 400 per kWh (LFP utility BESS, 2024 pricing): BESS CAPEX USD 940,000 to 1,500,000. For daylight-only operation (6 to 8 hours): BESS required only for transient smoothing (50 to 100 kWh), dramatically reducing cost. Wind + solar hybrid reduces BESS requirement by 30 to 50 percent by providing complementary generation profiles.

    Which countries lead in renewable desalination deployment?

    Saudi Arabia leads globally in RE-desal scale: NEOM Project Sindalah targeting 500,000 m3/day entirely renewable-powered; ACWA Power Jubail project (1,400,000 m3/day overall capacity with increasing RE integration). UAE: Taweelah IWP (909,200 m3/day RO, largest RO plant in world, 2023) incorporates solar co-generation. Spain (Canary Islands): Solar Energia Azul and Guia Renovable projects; long history of wind-RO research (SDAWES project, 1990s). Australia: Sundrop Farms solar-desal for greenhouse agriculture; Western Australia remote community RE-desal. India: MNRE promotes solar desal in coastal and island communities; IIT Madras solar membrane distillation research. Pacific Islands (Maldives, Tuvalu, Solomon Islands): small-scale solar SWRO increasingly replacing diesel-powered units for island freshwater security. Global RE-desal capacity growing at 15 to 20 percent annually (IDA 2023 data); RE-powered plants represent approximately 3 to 5 percent of total global desalination capacity but are increasing rapidly as solar PV and BESS costs fall.

    Case Study·Off-grid water supply in remote regions
    Challenge

    A Scottish island community of 340 households faced a deteriorating diesel-powered desalination plant with rising fuel costs of GBP 0.38 per kWh and increasing brine disposal concerns. Groundwater on the island was brackish at 4,200 mg/L TDS, making an alternative freshwater source essential. Grid connection was not feasible due to the 14 km subsea cable cost.

    Approach

    An integrated solar-wind-battery-RO system was designed comprising 420 kWp solar PV, a 200 kW wind turbine, a 600 kWh lithium iron phosphate battery energy storage system, and a 120 m3/day SWRO plant with energy recovery devices (ERDs). A hybrid controller managed power dispatch, ensuring the RO plant ran preferentially when renewable generation was high. Brine was diluted and dispersed via a submerged diffuser at 200 m offshore.

    Outcome

    Diesel consumption fell by 91%, reducing carbon emissions by 380 tonnes CO2e per year. Water production cost fell from GBP 4.20 per m3 (diesel baseline) to GBP 1.85 per m3 (blended over 20-year asset life). System uptime of 97.4% was achieved in year one. The brine dispersal system met SEPA (Scottish Environment Protection Agency) discharge consent requirements.

    Questions to Ask Shortlisted Providers

    1. 1

      What is the solar irradiation profile and wind resource assessment for the site, and what is the seasonal generation pattern?

      Renewables sizing must account for worst-case winter generation versus peak summer demand; sites with poor winter solar but good wind resource require higher wind or BESS capacity to maintain year-round supply.

    2. 2

      What is the required daily water production volume and what is the acceptable supply interruption tolerance?

      BESS sizing and system redundancy (standby diesel, dual RO trains) are driven by interruption tolerance; remote communities with no alternative supply require higher resilience design factors.

    3. 3

      What is the source water salinity and what constituents (iron, silica, organics, biological loading) affect RO membrane selection?

      Source water quality determines pre-treatment requirements, membrane type (SWRO vs BWRO), and energy recovery device sizing, all of which strongly influence overall system cost and energy consumption.

    4. 4

      What are the brine disposal constraints and what regulatory consents are required from the Environment Agency or SEPA?

      Marine brine discharge requires an Environmental Permit or SEPA licence; saline groundwater disposal to land requires a waste exemption or permit; disposal options significantly affect site selection and system cost.

    5. 5

      What is the operations and maintenance model and is there local technical capacity for system management?

      Remote RE-desal systems require trained operators; membrane replacement (every 5 to 10 years), BESS cell monitoring, and inverter maintenance must be accounted for in whole-life cost modelling.

    What Drives Cost in This Category

    Renewable energy generation capacity (solar PV and/or wind turbine)

    Solar PV costs GBP 500 to 900 per kWp installed in off-grid systems; small wind turbines (100 to 500 kW) cost GBP 1,200 to 2,000 per kW installed; hybrid systems reduce BESS sizing but increase control system complexity.

    Battery energy storage system (BESS) capacity

    Lithium iron phosphate BESS costs GBP 400 to 700 per kWh installed in off-grid water applications; oversizing BESS reduces RO downtime risk but is the single largest capex line in most RE-desal projects.

    RO plant design, pre-treatment, and energy recovery devices

    Seawater RO systems with ERDs and pre-treatment cost GBP 1,200 to 2,500 per m3/day capacity; brackish water RO is 30 to 50% cheaper; ERDs reduce energy consumption by 40 to 60% in SWRO applications.

    Grid-isolated system controls and remote monitoring infrastructure

    Hybrid energy management controllers, SCADA, and satellite remote monitoring add GBP 50,000 to 200,000 to project cost depending on complexity; ongoing satellite connectivity costs GBP 5,000 to 20,000 per year.

    Key Regulations & Standards

    Environmental Permitting Regulations 2016 (England and Wales) and SEPA Licensing (Scotland)

    Brine discharge to controlled waters requires an Environmental Permit or SEPA licence; application must include dispersion modelling demonstrating compliance with saline dilution standards and protection of marine biology.

    BS EN 806 and Water Supply (Water Fittings) Regulations 1999

    RO permeate intended for potable supply must meet WS(WQ)R 2016 parameters; remineralisation post-RO must use DWI-approved products to meet calcium, magnesium, and pH requirements.

    IEC 62109 Safety of Power Converters for Use in Photovoltaic Power Systems

    Inverters and power electronics in off-grid solar-wind systems must comply with IEC 62109-1 and -2; BESS systems must comply with IEC 62619 for safety and IEC 62933 for performance.

    Planning Policy and Permitted Development Rights for Renewable Energy

    Wind turbines above 15 m hub height require planning consent in England under NPPF; solar arrays above 1 MWp require Environmental Impact Assessment under the Town and Country Planning (EIA) Regulations 2017; island and remote sites may require Section 36 consent via DESNZ.

    Explore Related Categories

    Desalination Technologies

    Seawater Desalination (SWRO) CompaniesDesalination Service CompaniesModular Desalination CompaniesThermal Desalination Companies

    Energy Technologies

    Solar Water Treatment CompaniesEnergy Recovery Water Treatment CompaniesEnergy Efficient Water Treatment Companies

    Key Industries

    Energy & Power Generation Water Treatment CompaniesOil & Gas Water Treatment CompaniesAgriculture Water Treatment Companies

    Browse the full provider directory

    Comparing renewable-powered desalination companies is one slice of a larger shortlisting decision. Explore the complete directory of industrial water treatment companies, then filter by region, sector, and technology before you request scoped proposals.

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