SaltPower
SaltPower ApS is a Danish clean energy company that commercializes Pressure Retarded Osmosis technology to generate CO2-free electricity from salinity gradients, serving salt producers, potash producers, and underground energy storage operators with modular 100 kW PRO systems.
- Company typePrivate
- Founded2015
- HeadquartersSønderborg, Denmark
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What SaltPower does
SaltPower ApS is a privately held Danish clean energy company founded in 2015 in Sønderborg, Denmark by engineer and inventor Jørgen Mads Clausen, with a registered office at Østager 2, 6400 Sønderborg (CVR DK-25074297). The company commercializes Pressure Retarded Osmosis (PRO) technology that generates CO2-free electricity by harnessing the osmotic pressure difference between freshwater and saturated brine through semipermeable membranes. Its proprietary osmotic solution mining approach integrates power generation directly into industrial salt and potash production workflows, replacing conventional energy-intensive leaching pumps and converting brine production from a net energy cost into a net energy source that can supply the grid or self-power the customer's operations. The headcount sits in the 11-50 range and the company markets itself as a B2B enterprise field sales operation targeting salt producers, potash producers, underground energy storage operators (hydrogen, compressed air, natural gas caverns), and chemical processors (chlor alkali, wastewater treatment).
The product portfolio centers on the SaltPower Osmotic Power System, headlined by a fourth-generation modular 100 kW unit that scales through membrane parallelization, supplemented by osmotic leaching pumps designed for direct integration into salt, potash, and cavern excavation operations. Core system components are sourced through strategic supplier partnerships: Toyobo provides MC series hollow fiber membranes (validated through long-term ICOM 2023 performance data) and Danfoss supplies iSave high-efficiency energy recovery devices, high-pressure pumps, frequency converters (VLT series), and Editron motors. The Nobian/Dansk Salt production facility in Mariager, Denmark has hosted SaltPower's third-generation 10 kW prototype since April 2023 as the world's first commercial-scale osmotic plant for solution mining, validating the technology at industrial scale.
Revenue mechanics combine capital equipment sales (PRO systems and modules), electricity sales from osmotic power output, and non-dilutive public funding — notably the EU Horizon 2020 grant (agreement N° 954045) and Danish EUDP government support. The company has no disclosed equity funding rounds, subsidiaries, mergers, or acquisitions. End markets include the global salt industry (>350 million tons/year) and global potash production (~70 million tons/year), both of which rely heavily on solution mining and present the company's addressable opportunity. SaltPower has been recognized by the World Economic Forum as one of 2025's top emerging technologies for its category.
SaltPower firmographics
Firmographics- Name
- SaltPower
- Legal name
- SaltPower ApS
- Website
- https://saltpower.net
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- SaltPower ApS is a Danish clean energy company that commercializes Pressure Retarded Osmosis technology to generate CO2-free electricity from salinity gradients, serving salt producers, potash producers, and underground energy storage operators with modular 100 kW PRO systems.
- Ownership category
- akta.pro rank
SaltPower industry classification
Industry- Product category
- Osmotic Power Systems
- NAICS
- Water Supply and Irrigation Systems (221310)
- SIC
- Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- Salinity Gradient (Blue Energy) Power Generation (EUACAJAF)
Keywords
Where SaltPower is headquartered
LocationHeadquarters
- HQ city
- Sønderborg
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
SaltPower business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Supply Chain, Personnel, Operations, Infrastructure
Revenue model
- PRO System Sales and Installation: SaltPower sells and installs Pressure Retarded Osmosis (PRO) systems to industrial customers. These are capital equipment sales for integration into existing salt production, potash production, and solution mining operations. The company provides modular systems (100 kW modules) that can be scaled by adding more membranes.
- Energy Production from Osmotic Power: SaltPower generates and sells electricity produced from osmotic power. The technology converts salinity gradient energy into CO2-free electricity that can be supplied to the grid or used to power the customer's own operations.
- EU and Government Research Funding: SaltPower has received funding from European Union's Horizon 2020 research programme (grant agreement N° 954045) and EUDP (Danish Energy Technology Development and Demonstration Programme) for technology development and demonstration.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
SaltPower product offering
Product offeringCore offering
SaltPower develops and sells Pressure Retarded Osmosis (PRO) systems that generate CO2-free electricity by mixing freshwater with saturated brine across semipermeable Toyobo membranes. Its patented Osmotic Solution Mining Technology integrates osmotic power generation directly into existing salt, potash, and underground cavern operations without side streams or discharge. The offering is delivered as modular hardware (100 kW fourth-generation units and Osmotic Leaching Pumps), equipped with Danfoss iSave energy recovery devices, high-pressure pumps, and frequency converters.
Product overview
SaltPower offers a suite of clean energy products centered on Pressure Retarded Osmosis (PRO) technology. The core offering is the SaltPower™ Osmotic Power System, which generates CO2-free electricity by mixing saltwater and freshwater through semipermeable membranes. This is complemented by Osmotic Solution Mining Technology that integrates power generation with brine production operations. The company provides modular systems including the 100 kW module (4th generation) that scales by adding membranes, and specialized Osmotic Leaching Pumps for integration into salt, potash, and cavern excavation processes. Key components sourced from partners include Toyobo MC Membranes and Danfoss equipment (iSave energy recovery devices, high pressure pumps, frequency converters, and Editron motors).
Differentiator
Problem solved
Functional benefit
Products and services
- SaltPower™ Osmotic Power System A renewable energy system that generates clean, CO2-free electricity by harnessing the osmotic pressure difference between saltwater (preferably saturated brine) and freshwater through semipermeable membranes using Pressure Retarded Osmosis (PRO) technology. Sold to industrial operators in salt, potash, and underground energy storage segments.
- Osmotic Solution Mining Technology SaltPower's patented technology that integrates osmotic power generation directly with solution mining operations, making brine production CO2-free and energy neutral by recovering energy from the salt dissolution process. Can replace existing leaching stations and generate surplus electricity for the grid. Applicable to salt production, potash production, and salt cavern excavation.
- SaltPower 100 kW Module (4th generation) Fourth-generation modular power generation unit producing 100 kW of electric power using Pressure Retarded Osmosis. The system is modular and scalable by adding more membranes to increase capacity. Designed for industrial deployment in salt, potash, and underground cavern operations.
- Osmotic Leaching Pumps Modular pumps that integrate completely into salt production processes, enabling CO2-free solution mining without side streams or discharge. Applicable to salt production, potash production, and salt cavern excavation, replacing conventional leaching stations while concurrently generating electricity.
Companies that use SaltPower
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles4 records
SaltPower technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
SaltPower partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core.
- ToyobocoreToyobo provides MC series membranes for SaltPower's PRO systems. SaltPower's 2023 ICOM publication covers long-term membrane performance comparison of full scale Toyobo CTA HFMs (hollow fiber membranes) in PRO at high applied hydraulic pressure.
- DanfosscoreDanfoss provides multiple components for SaltPower systems: iSave energy recovery devices (ERD), high pressure pumps, frequency converters (VLT series), and Editron motors. The iSave device exchanges pressure between two streams with very high efficiency.
- Nobian/Dansk SaltcoreNobian (Dansk Salt) hosts SaltPower's third-generation 10 kW prototype system at their salt producing factory in Mariager, Denmark. The facility serves as the commercial-scale demonstration site for the world's first osmotic energy plant for solution mining, commissioned from April 2023.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
SaltPower competitors and assessment
Company assessmentDirect peers
- Statkraft: Norwegian state-owned utility that operated the world's first osmotic power prototype at Tofte (2014) before discontinuing its PRO program due to seawater-salinity economics. Historically the most direct competitor in osmotic power generation and the natural reference point for SaltPower's saturated-brine thesis.
- Energy Recovery Inc. US-listed manufacturer of PX Pressure Exchanger energy recovery devices used in seawater reverse osmosis. While operating in the desalination side of the water-energy interface, its core technology (isobaric pressure exchange) is conceptually adjacent to SaltPower's iSave-based PRO architecture and targets similar industrial water/energy customers.
Broad incumbents
- Danfoss: Global Danish industrial group that supplies SaltPower's iSave ERDs, high-pressure pumps, frequency converters and Editron motors. Danfoss is a much larger incumbent in drives, pumps and energy recovery, with overlapping capability in desalination and industrial energy efficiency but a far broader portfolio than SaltPower's niche.
- Veolia Environnement: Global water, waste and energy services group operating municipal and industrial water treatment assets. Veolia's industrial water business intersects with SaltPower's brine-handling domain, and at vastly larger scale it represents the incumbent that any industrial osmotic-power solution must integrate with or compete against.
- Suez SA: French-headquartered water and waste management major with industrial water and desalination activities. As a broad incumbent in the same water-energy space, Suez is a comparable reference point for the type of large-scale industrial brine and water contracts SaltPower targets.
Others
- Toyobo Co., Ltd. Japanese materials company that supplies the CTA hollow fiber membranes at the heart of SaltPower's PRO modules. A critical component supplier and published research partner (ICOM 2023), Toyobo is comparable as a key enabler of SaltPower's technology rather than a direct competitor.
- Grundfos: Danish-headquartered global pump manufacturer. Sells high-pressure pumps into water, industrial and energy markets overlapping with SaltPower's pumping needs; relevant as a benchmark for industrial pump economics and an alternative component source.
Regional players
- Acciona Agua: Spanish-headquartered water division of Acciona, focused on desalination and water treatment with strong presence in Southern Europe, MENA and Latin America. Comparable as a regional player in industrial brine/desalination projects where SaltPower's PRO could be co-deployed.
Emerging players
- Modern Water plc: UK-listed small-cap building membrane-based water treatment and desalination systems. Comparable as a small emerging company commercializing novel membrane technology for industrial and municipal customers, with similar scale and stage profile to SaltPower.
- Hyflux Ltd: Singapore-headquartered membrane and water technology company with a history in ultrafiltration, reverse osmosis and osmotic processes for industrial users. Operates in the same membrane-based water/energy space as SaltPower, including forward osmosis R&D, and is comparable as an emerging specialist.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks4 records
Key highlights7 records
Customer concentration
SaltPower social profiles
Digital presenceSaltPower financial estimates
Financial estimateRevenue estimate
Valuation estimate
SaltPower leadership team
Management profileNumber of profiles
Profiles3 records
SaltPower funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SaltPower M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SaltPower
What does SaltPower do?
SaltPower develops and sells Pressure Retarded Osmosis (PRO) systems that generate CO2-free electricity by mixing freshwater with saturated brine across semipermeable Toyobo membranes. Its patented Osmotic Solution Mining Technology integrates osmotic power generation directly into existing salt, potash, and underground cavern operations without side streams or discharge. The offering is delivered as modular hardware (100 kW fourth-generation units and Osmotic Leaching Pumps), equipped with Danfoss iSave energy recovery devices, high-pressure pumps, and frequency converters.
Is SaltPower a public or private company?
SaltPower is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was SaltPower founded?
SaltPower was founded in 2015. It employs 11 to 50 people.
Where is SaltPower based?
SaltPower is headquartered in Sønderborg, Denmark, in the Europe region.
How does SaltPower make money?
Three revenue lines are on record. PRO System Sales and Installation is the primary driver. The others are energy Production from Osmotic Power and EU and Government Research Funding.
Who are SaltPower's main competitors?
Direct peers on record are Statkraft and Energy Recovery Inc.. Broad incumbents are Danfoss, Veolia Environnement and Suez SA. Others are Toyobo Co., Ltd. and Grundfos. Acciona Agua is listed as a regional player. Emerging players are Modern Water plc and Hyflux Ltd.
Does SaltPower have an API?
No public API is recorded for SaltPower.
What industry is SaltPower in?
SaltPower's product category is Osmotic Power Systems. Its primary akta.pro industry code is EUACAJAF, Salinity Gradient (Blue Energy) Power Generation. Its NAICS code is 221310 and its SIC code is 4991.