What Rockfin does

Rockfin is a Poland-based engineering and manufacturing company founded in 1991 that designs, produces, tests, and commissions custom auxiliary systems for rotor machines, including lube oil, control oil, seal oil, high-pressure hydraulic, fuel-gas, gas filtration, and cooling systems for steam turbines, gas turbines, generators, and compressors. It serves the nuclear, oil and gas, conventional and transitional power, hydrogen and alternative fuels, renewable, grid and energy conversion, and selected industrial (military, pulp and paper, carbon capture) sectors, with named customers and partners including EDF, Westinghouse, KHNP, Rosatom, Toshiba Energy Systems & Solutions, INNIO Group, Woodfibre LNG, and Zamil Heavy Industries. Its technology stack combines in-house mechanical engineering (3D modeling, strength calculations, NDT-accredited lab) with certified fabrication to ASME U-Stamp, PED 2014/68/EU, AD2000, ISO 19443, IAEA GSR Part 2, and AQAP 2110 standards, supported by 1,400+ employees and 23,000 m² of production capacity across four Polish facilities, plus wholly-owned sales/service subsidiaries in the United States, Switzerland, and Italy and a 2025 joint venture in Saudi Arabia.

Rockfin monetizes primarily through project-based, custom-engineered hardware contracts (auxiliary system design, fabrication, commissioning), complemented by a recurring service and maintenance stream (warranty, life extension, retrofits, on-site assembly, spare parts) and a growing standalone hydrogen product line under the HyVentive sub-brand (electrolyzers from 10 kW to 5 MW, compressors 200-500 bar, storage, fuel cells, refueling stations, purification). Revenue is quote-driven with negotiated enterprise pricing; the company has completed more than 11,000 contracts over five years and delivered 2,300+ systems to 524 active customers across more than 100 countries. Ownership is currently JET Investment (100% since 2021), with a planned full acquisition by Capmont Private Equity in 2026.

Name

Rockfin

Legal name

Rockfin sp. z o.o.

Website

https://rockfin.pl

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

251–500 employees

Short description

Rockfin is a Poland-based, 1,400-employee engineering and manufacturing firm that designs and delivers custom auxiliary systems (lube oil, hydraulic, filtration, cooling, hydrogen) for turbines, generators, and compressors serving nuclear, oil and gas, power, hydrogen, and renewable customers in over 100 countries.

Ownership category

akta.pro rank

Product category

Industrial Energy Engineering & Auxiliary Systems

NAICS

Fluid Power Pump and Motor Manufacturing (333996), Other General Purpose Machinery Manufacturing (3339), Metal Tank (Heavy Gauge) Manufacturing (332420)

SIC

Oil & Gas Field Machinery & Equipment (3533), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Oilfield Equipment Manufacturing & Supply (Wellheads, BOPs, Surface Equipment) (EUALABAL)

akta.pro secondary industry

Marine & Offshore Wind BOP Construction (Foundations, Cables, Ports, Installation Support) (EUAMAFAI)

Keywords

• Hydraulic oil systems
• Auxiliary power systems
• Turbine auxiliary systems
• Hydrogen production systems
• Energy engineering services

Headquarters

HQ city

Chwaszczyno

HQ country

Poland

HQ region

Europe

Offices9 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Engineering and Manufacturing of Auxiliary Systems: Rockfin designs, manufactures, tests, and commissions advanced oil, fuel-gas, hydraulic, and process systems as well as auxiliary systems for rotor machines. Projects are typically custom-engineered solutions for specific power plant and industrial applications.
2. Service and Maintenance: Comprehensive maintenance services including warranty and post-warranty support, life extension, retrofits, repairs, on-site assembly, and spare parts supply.
3. HyVentive Hydrogen Products: Sale of hydrogen production units, electrolyzers, compressors, storage systems, fueling stations, and hydrogen infrastructure for industrial and municipal customers.
4. Components (Vessels, Valves, Filtration): Standard and customized component solutions including pressure vessels, filtration systems, and flow control valves.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels4 records

Core offering

Rockfin designs, manufactures, tests and commissions custom-engineered auxiliary systems for rotor machines and energy infrastructure, including lube oil systems, control oil systems, high-pressure and power hydraulic systems, gas filtration, cooling systems, and process installations for nuclear, conventional, oil & gas, renewable, grid and hydrogen applications. Through its HyVentive sub-brand, Rockfin also offers a full hydrogen product portfolio (electrolyzers, compressors, storage, fuel cells, refueling stations, mixing and purification systems), complemented by service, maintenance and component offerings such as pressure vessels, filters and changeover valves.

Product overview

Rockfin is an engineering and manufacturing company specializing in the design, production, testing, and commissioning of advanced oil, fuel-gas, hydraulic, and process systems as well as auxiliary systems for rotating machinery. The company operates across nine core solution areas: Nuclear Energy, Oil & Gas Industry, Conventional & Transitional Energy, Hydrogen & Alternative Fuels, Renewable Energy, Grid & Energy Conversion, Special Industrial Solutions, Service & Maintenance, and Components (Vessels, Valves & Filtration). Within the Hydrogen division, HyVentive offers a comprehensive hydrogen product portfolio including electrolyzers (10 kW to 5 MW), compressors (200-500 bar), storage systems, fuel cells, loading/distribution panels, mixing systems, purification systems (99.999% purity), and hydrogen refueling stations. Component products include lube oil systems, water cooling systems for power conversion and HVDC, chiller systems, ORC generators, hydraulic cylinders, mobile filtration units, high-pressure gas systems, pressure vessels, oil mist separators, duplex filters, changeover valves, BOG skids, filling stations, and gas engine auxiliary modules. The products serve energy, industrial, marine, defense, and energy transition sectors globally.

Differentiator

Problem solved

Functional benefit

Brands

• HyVentive: Hydrogen division providing specialized consulting, development, engineering and supply of H2 production units for small and medium-sized customers. Products include electrolyzers (10 kW to 5 MW), hydrogen compressors (200, 350, 500 bar), storage systems, fuel cells, hydrogen refueling stations, and purification systems.
• Petroff Team

Products and services

• Nuclear Energy Solutions Custom-engineered auxiliary power plant systems for nuclear reactors, including lube oil, control oil, seal oil, cooling and safety systems, delivered under a robust nuclear safety culture with ISO 19443 and IAEA GSR Part 2 compliance for reactor providers EDF, Westinghouse, KHNP and Rosatom.
• Oil & Gas Industry Solutions Systems for oil & gas extraction, transport and processing, including compressors, gas liquefaction (LNG), gas filtration, auxiliary modules, lube oil units and seal gas panels that improve efficiency and reliability in harsh operating environments.
• Conventional & Transitional Energy Solutions Complete auxiliary systems for large centralized power plants with steam and gas turbines, designed to optimize performance and efficiency while supporting transitional energy initiatives.
• Hydrogen & Alternative Fuels Solutions Advanced solutions for hydrogen production by electrolysis (AEW, PEM, SOE) and for hydrogen technologies including generators, dryers, deOxo systems, compressors and storage facilities for industrial and municipal customers.
• Renewable Energy Solutions Engineering solutions for renewable energy generation from solar, wind, geothermal, biogas and hydroenergy sources, including hydraulic, hydrotronic and control systems for hydropower stations.
• Grid & Energy Conversion Solutions Solutions for energy conversion, transmission and grid stability including kinetic energy storage (synchronous condensers), AC/DC converters with cooling systems, heat pumps, Organic Rankine Cycles (ORC) and SOFC technology.
• Special Industrial Solutions Deliveries to specific industrial sectors including military, pulp and paper and other machinery, plus carbon capture and storage (CCS) and waste-to-X technologies that convert waste into usable forms.
• Service & Maintenance Comprehensive maintenance and servicing for both Rockfin and third-party energy and industrial installations, including warranty and post-warranty support, life extension, retrofits, repairs, on-site assembly, spare parts supply, process analysis and rapid 24/7 response teams for lube oil, control oil, high-pressure and power hydraulic systems.
• Components: Vessels, Valves & Filtration Standard and customized component solutions for auxiliary systems and process installations, including pressure and atmospheric vessels, advanced filtration systems, and high-precision flow control and changeover valves.
• HyVentive Electrolyzers Hydrogen production electrolyzers with capacity from 4 kg to 2,000 kg per day and power from 10 kW to 5 MW, including water treatment stations, dedicated power supply, control mechanisms, heat recovery and hydrogen purification for small and medium hydrogen installations.
• HyVentive Compressors Hydrogen compressor systems compatible with various pressure standards (200, 350 or 500 bar) that provide flexibility for industrial and mobility hydrogen applications.
• HyVentive Storage Systems Steel low-pressure containers for standard hydrogen applications and high-pressure composite cylinders for specialized storage needs, designed for seamless integration into hydrogen production and refueling infrastructure.
• HyVentive Fuel Cells High-performance fuel cells that convert hydrogen into electrical energy and heat, available in multiple sizes for residential buildings, industrial facilities and backup power systems.
• HyVentive Loading and Distribution Panels Loading and distribution panel systems that ensure safe and efficient transfer and distribution of hydrogen, using proven components from leading industry brands.
• HyVentive Mixing Systems Hydrogen mixing systems for blending hydrogen into natural gas networks to reduce greenhouse gas emissions in gas turbines and boilers, with controlled gas flow and consistent mixing quality.
• HyVentive Purification Systems Hydrogen purification systems that deliver up to 99.999% (automotive-grade) hydrogen purity, reliably removing impurities regardless of the upstream hydrogen production source.
• HyVentive Hydrogen Refueling Station (HRS) Modern hydrogen refueling station (HRS) facilities that form the foundation of infrastructure for emission-free heavy-duty, municipal and fleet transportation, including 350-bar and 600-bar configurations.

Quantifiable outcome

• Guinness World Record for most efficient CCGT plant in the world (Bouchain)
• +4 more outcomes

Named customers16 records

Segments10 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Six partnerships are on record, tiered core.

• Toshiba Energy Systems & Solutions CorporationcoreStrategic or Co-development PartnerStrategic partnership for nuclear power projects including Akkuyu Nuclear Power Plant in Turkey. Collaboration strengthens Rockfin's position in global nuclear energy infrastructure market, combining Rockfin's auxiliary systems expertise with Toshiba's reactor technology.
• ElogencoreTechnology or IntegrationPartnership announced October 2025 for PEM electrolyzers from 5 MW capacity. 'HyVentive powered by Elogen' combines Elogen's proven PEM technology with Rockfin's hydrogen infrastructure capabilities for the European energy market.
• Al Zamil Heavy IndustriescoreStrategic or Co-development PartnerJoint venture Zamil Rockfin Saudi Arabia (ZRS) combining Rockfin's global engineering competencies with local manufacturing and execution capabilities in Saudi Arabia and GCC countries, supporting IKTVA program goals.
• Petroff TeamcoreOthersPart of Rockfin Group, specializing in operational services, maintenance, and installation reliability for oil and hydraulic systems. Supports clients in increasing equipment reliability and optimizing industrial installation performance throughout lifecycle.
• INNIO GroupcoreStrategic or Co-development PartnerCollaboration on Jenbacher J920 FleXtra gas engine technology. Rockfin produces turbocharger assemblies (TCA) for INNIO's flexible power generation solutions, with successful projects in Poland and Romania.
• EDF, Westinghouse, KHNP, RosatomcoreTechnology or IntegrationLeading nuclear reactor providers for whom Rockfin supplies auxiliary systems. EDF (France), Westinghouse (USA), KHNP (South Korea), and Rosatom (Russia) represent major nuclear power plant projects worldwide.

Scale indicators10 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Hauhinco: Hauhinco designs and manufactures high-pressure hydraulic systems and pumps for mining, power generation, and tunneling — closely comparable to Rockfin's high-pressure hydraulic and power hydraulic system offerings.
• Bosch Rexroth: Bosch Rexroth is a global leader in hydraulic drives, pumps, valves, and motion-control systems for industrial machinery — directly comparable to Rockfin's hydraulic, lube oil, and control oil system offerings for power-generation and industrial rotating equipment.
• Parker Hannifin: Parker Hannifin's Industrial and Energy segments manufacture hydraulic systems, filtration, fluid handling, and sealing products used in power generation, oil & gas, and heavy industry — a near-direct overlap with Rockfin's auxiliary systems portfolio.
• ANDRITZ: ANDRITZ is a major supplier of hydropower turbines and pumps with extensive auxiliary systems — competitive with Rockfin in hydropower auxiliaries and in fluid-handling components for energy and industrial customers.
• Voith: Voith supplies hydropower turbine auxiliaries, control systems, and hydraulic governors — directly comparable to Rockfin's hydropower hydraulic, hydrotronic, and control systems for hydro plants including Grand Ethiopian Renaissance Dam and Linthal.
• HYDAC: HYDAC specializes in hydraulic accumulators, filtration, cooling, and condition monitoring for hydraulic and lube oil systems across power, steel, marine, and renewable applications — closely aligned with Rockfin's fluid-power systems integration business.
• SKF: SKF's lubrication systems business (including Lincoln Industrial and SKF Lubrication Business) supplies automatic lubrication, oil circulation, and condition monitoring for rotating machinery — directly comparable to Rockfin's lube oil unit offerings.

Broad incumbents

• GE Vernova: GE Vernova's gas power, steam, grid solutions, and wind businesses source auxiliary systems from suppliers like Rockfin (e.g., SGT-50 packages via Flex Energy) while also offering integrated solutions — a broad incumbent competing for the same end-customer wallet.
• Siemens Energy: Siemens Energy supplies turbines, generators, and increasingly integrated auxiliary systems for power generation including gas, steam, HVDC, and hydrogen — a broader incumbent that overlaps with Rockfin's offerings as both a customer (through subsidiaries) and competitor via bundled solutions.

Emerging players

• Nel ASA: Nel ASA is a pure-play electrolyzer and hydrogen refueling station manufacturer — comparable to Rockfin's HyVentive division as a competing supplier of PEM/alkaline electrolyzers and HRS infrastructure for industrial and mobility customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@RockfinSA
• Facebookfacebook.com/firmaRockfin
• LinkedInlinkedin.com/company/rockfinsp.zo.o.

Compliance18 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries5 records

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 Rockfin