Hydronex

What Hydronex does

Hydronex B.V. is a Dutch developer of smart energy hubs and a wholly-owned subsidiary of Roelofs Groep, headquartered in Steenwijk, Overijssel. Founded in 2017, the company initiates, develops, finances, and operates local energy nodes that combine renewable electricity generation (floating and ground-mounted solar on Roelofs-owned sand quarries), battery storage, electrolyzer-based green hydrogen production, EV charging, and hydrogen refueling. Its technology stack includes RFNBO-certified hydrogen production, proprietary Energy Management Systems for coordinating asset dispatch, and lake source cooling (via the UR Cool joint venture with Unica Energy Solutions) that leverages cold water from sand extraction lakes at 15-20m depth.

The company's product portfolio centers on two flagship hubs — Energiehub Eeserwold Steenwijk (€8M+ OWE subsidy) and Energiehub Twente Vriezenveen (€6M SWiM subsidy, 5 MW electrolyzer planned) — alongside floating solar parks at Tynaarlo (23,000 panels) and Sekdoorn (40,000 panels) and a subsidy-application service for SWiM consortia. Hydronex earns revenue through project development fees, consortium coordination, hydrogen sales to Fieten Olie refueling stations, managed cooling services (UR Cool), and SWiM subsidy application management. GTM is enterprise field sales executed via multi-party consortiums including municipalities (Steenwijkerland, Twenterand), grid operators (Rendo, Enexis), and industrial off-takers; primary customers are municipal governments, transport/logistics companies, industrial manufacturers, and sand quarry operators in Northern and Eastern Netherlands.

The business is pre-commercial at scale: most flagship hydrogen hubs target full operation by 2028, the team is small (~8 people), and a significant share of near-term capacity is grant-funded rather than equity-backed. Cross-border expansion (H2EART Hydrogen Valley application with German partners in 2025) and consecutive international recognition (Hydrogen Guide 2023, 2024, 2025) point to a deliberate strategy of building a regional champion position before scaling into broader Northwest European hydrogen infrastructure markets.

Name

Hydronex

Legal name

Hydronex B.V.

Website

https://hydronex.nl

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

Hydronex is a Dutch developer of smart energy hubs integrating renewable generation, battery storage, and green hydrogen production, serving municipalities, industrial operators, and transport companies in Northern and Eastern Netherlands as a subsidiary of Roelofs Groep.

Ownership category

akta.pro rank

Product category

Clean Energy Infrastructure & Hydrogen Project Development

NAICS

Electric Power Generation (22111), Solar Electric Power Generation (221114), Steam and Air-Conditioning Supply (221330)

SIC

Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Microgrid Development, EPC & Integration (EUAMAJAB)

akta.pro secondary industries

Hydrogen Production Supply & Offtake (Green/Blue H2) for Utility Blending (EUAJAJAF), Interconnection, Permitting & Grid Services for DERs (EUAMAJAH)

Keywords

• Smart energy hubs
• Green hydrogen production
• Energy transition project development
• Floating solar parks
• Subsidy management services

Headquarters

HQ city

Steenwijk

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Energy Hub Development & Project Management: Hydronex initiates, develops, and manages smart energy hub projects from conception through to operation. Revenue is generated through project development fees, consortium coordination, and project management services.
2. Green Hydrogen Production & Sales: Hydronex produces green hydrogen via electrolysis using locally sourced renewable electricity and sells hydrogen to the mobility sector (via Fieten Olie hydrogen stations) and regional industry. Hydrogen supply agreements with transport companies and industrial businesses.
3. Subsidy Application & Management Services: Hydronex prepares and submits subsidy applications on behalf of consortiums (SWIM, OWE, SDE++). The company coordinates subsidy processes for energy hub and hydrogen projects, earning fees for application management and project coordination.
4. UR Cool Infrastructure Management: Hydronex manages and maintains the UR Cool lake source cooling infrastructure on Bedrijvenpark Eeserwold. Revenue is derived from cooling service delivery to industrial customers (buildings, bakeries, cold storage facilities).

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

Hydronex initiates, develops, finances, and operates smart energy hubs that locally combine renewable electricity (floating solar, wind), battery storage, and green hydrogen electrolysis to balance supply and demand and alleviate grid congestion. Its flagship projects Energiehub Eeserwold (Steenwijk) and Energiehub Twente (Vriezenveen) supply green hydrogen to Fieten Olie refueling stations and industrial buyers, with supporting offerings in floating solar parks, UR Cool lake-source cooling, and subsidy navigation (SWIM, OWE, SDE++) on behalf of consortia.

Product overview

Hydronex is a developer of smart energy hubs, operating as a subsidiary of Roelofs Groep. Its product portfolio centers on smart energy hubs that integrate renewable energy production, storage (battery and hydrogen), and distribution for local use. The core offering consists of Smart Energy Hubs (Slimme energiehubs) as the main product, with two flagship projects: Energiehub Eeserwold Steenwijk and Energiehub Twente. Supporting the hubs, Hydronex delivers green hydrogen production via electrolysis (RFNBO-certified), and floating solar installations across multiple locations (Tynaarlo, Sekdoorn, Oosterweilanden, Oldeholtwolde). A complementary service is UR Cool (Lake Source Cooling), a joint venture with Unica that provides sustainable industrial cooling using water from sand extraction lakes. Hydronex also assists consortia with SWiM subsidy applications for hydrogen mobility projects.

Differentiator

Problem solved

Functional benefit

Brands

• UR Cool: Unica Roelofs Cooling - a joint venture providing sustainable lake source cooling solutions using cold water from sand extraction lakes
• H2 Eeserwold
• FR Energyhubs

Products and services

• Smart Energy Hubs (Slimme energiehubs) Intelligent local energy nodes that connect renewable energy producers and industrial consumers, exchange, convert, and store energy (battery + hydrogen), and balance supply and demand to alleviate grid congestion. Sold to municipalities, business parks, and industrial partners as a project-based B2B offering.
• Energiehub Eeserwold Steenwijk Smart energy hub on Bedrijvenpark Eeserwold near Steenwijk combining green hydrogen electrolysis, battery storage, EV charging, and a hydrogen fueling station; supplies locally produced green hydrogen to Fieten Olie refueling station.
• Energiehub Twente Smart energy hub at Oosterweilanden business park in Vriezenveen featuring a 5 MW electrolyser for green hydrogen production, battery storage, a hydrogen refueling station, and EV charging; partnered with Fieten Olie and FR Energyhubs for hydrogen distribution.
• Green Hydrogen Production Production of green (renewable) hydrogen through electrolysis using locally sourced solar and wind energy; hydrogen is certified to RFNBO standards, stored, and sold to the mobility sector (via Fieten Olie / FR Energyhubs) and to regional industrial buyers.
• UR Cool (Lake Source Cooling) Sustainable lake-source cooling for buildings, offices, and production processes using cold water from deep sand-extraction lakes (15–20m depth); reduces electricity consumption by approximately 80% versus conventional refrigeration. A Unica–Roelofs/Hydronex joint venture.
• Floating Solar Parks (Drijvende Zonneparken) Floating solar panel installations on sand quarry lakes that benefit from natural water cooling; deployed at Tynaarlo (23,000 panels), Sekdoorn (40,000 panels), Oosterweilanden (planned up to 10 hectares), and Oldeholtwolde (planned 30 MWp).
• Solar Carport Zuidhorn Solar carport installation at Stationspark in Zuidhorn with 1,100 solar panels, generating electricity for approximately 162 households; built by Soly with Roelofs designing the underground infrastructure.
• SWIM Subsidy Application Assistance Preparation and submission of SWIM (Subsidie Waterstof in Mobiliteit) subsidy applications on behalf of consortia of transporters and fuel station operators, enabling up to EUR 300,000 per truck and EUR 60,000 per van in subsidies for hydrogen vehicles.

Quantifiable outcome

• Energyhub Eeserwold will contribute significantly to the RES targets of Steenwijkerland municipality for 2030, addressing net congestion on the local grid.
• +4 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

18 partnerships are on record, tiered key, minor and core.

• NLHydrogenkeyGTM or Marketing Partner · 3 February 2026NLHydrogen is the Dutch hydrogen industry association that brings together parties from the entire hydrogen chain to accelerate the development of a robust hydrogen economy. Hydronex joined as a member to strengthen its ambition to play an important role in the energy transition and the development of sustainable hydrogen infrastructure.
• HyNorthkeyGTM or Marketing Partner · 13 May 2024HyNorth is a network organization and chain coordinator (ketenregisseur) for hydrogen in Northern Netherlands, dedicated to making the North a leader in the hydrogen economy. Hydronex joined as a companion member (kompaanlid) to contribute to the energy transition in Northern Netherlands. Hydronex hosts Good Morning HyNorth events and participates in HyNorth Plaza at trade events.
• Nationale Learning Community SysteemintegratieminorStrategic or Co-development Partner · 16 January 2023Hydronex joined the National Learning Community System Integration (Systeemintegratie) for a three-year period. Partners include TU Delft, Saxion Hogeschool, Hanzehogeschool Groningen, Hogeschool Arnhem-Nijmegen, and Hogeschool van Amsterdam. The community develops expertise in system integration for the energy transition.
• Roelofs GroepcoreStrategic or Co-development PartnerRoelofs Groep is the parent company of Hydronex. It provides access to land assets (sand quarry lakes), infrastructure expertise, and established regional networks. Roelofs is a total solutions provider in infrastructure (infrabedrijf). Hydronex leverages Roelofs' assets and capabilities to develop energy hub projects, particularly floating solar parks on Roelofs-owned sand quarry lakes.
• Fieten OliecoreStrategic or Co-development PartnerFieten Olie develops and operates hydrogen refueling stations in Steenwijk, Vriezenveen, and Appingedam. Hydronex supplies locally produced green hydrogen to Fieten Olie stations via direct pipeline connections. Fieten Olie leads the physical development of hydrogen stations while Hydronex handles project development and hydrogen supply.
• Rendo / N-TracoreStrategic or Co-development PartnerRendo (N.V. RENDO Holding) and N-Tra are energy sector partners in the Energiehub Eeserwold project. Rendo provides local gas grid infrastructure that can be used for hydrogen distribution or blending. Both entities contribute to energy infrastructure and grid management aspects of energy hub projects.
• H2Hub TwentekeyStrategic or Co-development PartnerH2Hub Twente is a knowledge partner in the Energiehub Twente project, contributing expertise in hydrogen technology and applications. The organization supports the development of a hydrogen ecosystem in the Twente region.
• Unica Energy SolutionskeyStrategic or Co-development PartnerUnica Energy Solutions is the partner in the UR Cool joint venture (Unica Roelofs Cooling). Unica maintains the pump house infrastructure of the lake source cooling system, while Hydronex manages the broader cooling system infrastructure. The joint venture operates the UR Cool system on Bedrijvenpark Eeserwold.
• Gemeente SteenwijkerlandcoreStrategic or Co-development PartnerMunicipality of Steenwijkerland is a key partner and initiator of the Energiehub Eeserwold project on Bedrijvenpark Eeserwold. The municipality contributes to the coalition by providing policy support, permitting, and alignment with local energy strategies (RES).
• Gemeente TwenterandcoreStrategic or Co-development PartnerMunicipality of Twenterand is a key partner in the Energiehub Twente project at Oosterweilanden business park in Vriezenveen. The municipality signed an intention agreement and provides regional subsidy support through the Twente Board.
• SteenergieminorStrategic or Co-development PartnerSteenergie is a partner in the Energiehub Eeserwold coalition, contributing local energy expertise and stakeholder engagement.
• 43 Gemechaniseerde BrigademinorStrategic or Co-development PartnerMilitary unit (43 Mechanised Brigade) located near Havelte is a partner in the Energiehub Eeserwold project, with potential for renewable energy generation on their site (solar panels on military facility at Johannes Post Kazerne).
• SolyminorStrategic or Co-development PartnerSoly is a solar energy company that installed the 1,100-panel solar carport at Stationspark Zuidhorn. Roelofs (parent) collaborated on underground infrastructure design and execution.
• Gemeente WesterkwartierminorStrategic or Co-development PartnerMunicipality of Westerkwartier initiated the solar carport project at Stationspark Zuidhorn, which combines renewable energy generation with parking infrastructure.
• FR EnergyhubskeyStrategic or Co-development PartnerFR Energyhubs is a joint entity of Fieten Olie and Roelofs that supplies green hydrogen. Hydronex collaborates with FR Energyhubs for hydrogen supply to the SWIM subsidy consortium's hydrogen refueling infrastructure.
• Moore MKW / Moore MTHminorOthersAccounting and advisory firm partner in the UR Cool project at Bedrijvenpark Eeserwold.
• Twente BoardkeyStrategic or Co-development PartnerTwente Board is a regional development organization that awarded a regional subsidy of over EUR 150,000 to the Energyhub Twenterand partnership to develop smart energy solutions for the region.
• H2EART (Hydrogen Economy Assisting Regional Transition)keyStrategic or Co-development PartnerH2EART is a cross-border hydrogen project in Eastern Netherlands (Oost-Nederland), involving Netherlands, Münsterland, and Emscher Lippe (Germany). Hydronex contributes through its energy hubs Eeserwold Steenwijk and Twenterand. The application for Hydrogen Valley status was submitted in April 2025.

Scale indicators11 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• GroenLeven: Leading Dutch floating solar and large-scale solar developer that has worked with Hydronex/Roelofs on Tynaarlo and Sekdoorn. Closest competitor on the floating solar + floating-on-mining-lake use case and on integrated renewable project development for Dutch municipalities and industrial parks.
• Unica Energy Solutions: Dutch energy infrastructure and cooling/HVAC specialist; JV partner to Hydronex in the UR Cool lake-source cooling venture. Comparable in the Dutch energy-services market with significant overlap on industrial cooling and energy management system integration.
• H2Groen: Dutch joint venture (originally bp, Nouryon, Port of Amsterdam) now led by Tree Energy Solutions developing large-scale green hydrogen production in the Netherlands via electrolysis. Overlaps on hydrogen production for mobility/industry in regional Netherlands geographies.
• Nederlandse Waterstof Maatschappij (NWM): Netherlands Waterstof Maatschappij develops green hydrogen projects across the Netherlands, frequently partnering with regional players. Comparable as a Dutch regional green hydrogen developer pursuing similar RFNBO-certified offtake with mobility/industrial users.
• VoltH2: Dutch pure-play green hydrogen developer operating electrolysis-based hydrogen plants across the Netherlands. Direct head-to-head on hydrogen production-supply-offtake for mobility and industry, particularly in regional Netherlands geographies.

Broad incumbents

• Vattenfall: Large European utility with growing hydrogen and renewable portfolios in the Netherlands. Competes for the same subsidy pools (SDE++, OWE) and the same large industrial off-takers, but with broader portfolio and balance sheet.
• Shell Hydrogen: Integrated major with significant hydrogen and renewable ambitions in the Netherlands (e.g., H2Groen, REFHYNE). Overlaps with Hydronex on Dutch hydrogen mobility and industrial off-take, but competes with much broader capex and global footprint.
• RWE Generation: European integrated utility developing offshore wind and green hydrogen, including in the Netherlands. Comparable on electrolysis-based hydrogen supply to mobility and industrial customers, though at much larger scale.

Emerging players

• HDF Energy: French-listed developer of hydrogen-to-power plants (HYCOPRA platform) and high-power fuel cells. Adjacent on hydrogen off-take markets and on hybridizing hydrogen/battery storage with renewables, though focused on island/industrial microgrids rather than integrated Dutch hubs.
• Groenewout / Energy StorageNL ecosystem players (GreenFlux): Dutch smart energy platforms and EMS providers serving EV charging, battery storage, and DER orchestration. Comparable to Hydronex's EMS layer of the smart energy hub, focused on interconnecting distributed assets at industrial sites.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCjCL_tAw6Mj1sQi44VLU8tg
• LinkedInlinkedin.com/company/hydronex

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hydronex