What HyAxiom does

HyAxiom is a U.S.-based clean energy company that designs, manufactures, sells, and services stationary hydrogen and natural-gas fuel cell systems for commercial, industrial, utility, and data center customers. Founded in 2014 as Doosan Fuel Cell America following Doosan Group's acquisition of UTC Power's fuel cell business, the company rebranded as HyAxiom in 2022 to reflect a sharpened focus on hydrogen. It operates as a subsidiary of South Korea's Doosan Group, with headquarters in South Windsor, Connecticut and manufacturing in East Hartford, Connecticut, and runs a 24/7 in-house service operation supported from both the U.S. and South Korea. The company employs 251–500 people and claims 80+ MW of installed capacity globally, including 117+ PureCell M400 units deployed in the U.S. and the world's first commercial-scale 50 MW hydrogen-fueled stationary fuel cell power plant (Busan, 2020).

The company's core technology is the proprietary phosphoric acid fuel cell (PureCell M400 platform), available in hydrogen, natural gas, and LPG/NG dual-fuel variants, each delivering 440–460 kW of electricity and up to 352 kW of recoverable heat for combined heat and power (CHP) applications. PureCell units are modular and scale from single installations to multi-megawatt deployments; HyAxiom also offers trailer-mounted mobile configurations. In 2023–2024 the company commercialized the PureCell H500 (500 kg H2/day) and H4300 (4,300 kg H2/day) PEM electrolyzers, and is developing a 300 kW Solid Oxide Fuel Cell and a Tri-Gen system that produces hydrogen, electricity, and heat simultaneously. The company holds 80+ patents globally, has CARB DG and Massachusetts 310 CMR 7.03 emissions certifications, and is the first SOFC cell stack to pass DNV maritime environmental testing.

HyAxiom's revenue model combines one-time hardware sales (PureCell systems and PEM electrolyzers) with multi-year recurring service revenue through its 24/7 remote monitoring and maintenance contract, plus financing-engineered structures including direct capital acquisition, operating and capital leases, tax equity financing, and power purchase agreements (PPAs). Customers span data centers, hospitals, universities, commercial buildings, oil refineries, petrochemical complexes, and utilities — with named installations including Coca-Cola's East Hartford bottling plant, Sheraton San Diego Hotel & Marina, Bobcat/Doosan (Bismarck and Gwinner), University of Connecticut, University of Hartford, Ilsan Data Center, Busan Green Energy, and Kern Energy. Sales is primarily enterprise field-driven (sales line: 860-727-2253), supplemented by project development partnerships (Scale Microgrids, NuPower, C.E. Floyd) and Doosan Group's distribution network, with awareness built at CES, the World Hydrogen Congress, and the Hydrogen and Fuel Cell Seminar.

Name

HyAxiom

Legal name

HyAxiom, Inc.

Website

https://hyaxiom.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

251–500 employees

Short description

HyAxiom is a Connecticut-based subsidiary of South Korea's Doosan Group that designs, manufactures, and services stationary fuel cells (PureCell M400 PAFC platform) and PEM electrolyzers for data centers, industrial facilities, utilities, and oil and gas customers seeking 24/7 clean power.

Ownership category

akta.pro rank

Product category

Stationary Fuel Cell Energy Systems

NAICS

Electric Power Generation (22111), Industrial Gas Manufacturing (32512), Electric Power Generation, Transmission and Distribution (2211)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Fuel Cell Distributed Generation (Hydrogen/Natural Gas SOFC/PEM) (EUACALAK)

akta.pro secondary industries

Hydrogen CHP (Fuel Cell & H2-Ready Turbines) (EUACAKAF), Fuel Cell CHP (SOFC/PEM—Natural Gas/Biogas/Hydrogen) (EUACAKAG), Hydrogen Energy Storage & Power-to-X Equipment (electrolyzers, storage, fuel cell systems) (IMAGAHAM)

Keywords

• Stationary fuel cells
• Phosphoric acid fuel cells
• PEM electrolyzers
• Combined heat and power
• Green hydrogen production

Headquarters

HQ city

East Hartford

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fuel Cell Hardware Sales: HyAxiom develops, manufactures, installs, and services stationary fuel cells (PureCell M400) and electrolyzers. The PureCell M400 is sold as a modular unit capable of generating up to 460 kW, with multi-unit configurations scaling to multi-megawatt installations. Revenue is generated through direct capital acquisitions of the fuel cell systems.
2. Installation and Project Development Services: HyAxiom provides full project development services including detailed facility analysis, system design, permitting, interconnection, and installation. The company works with contractors to integrate systems with customer electrical and mechanical infrastructure. Revenue is generated through service fees embedded in project contracts.
3. Remote Monitoring and Technical Maintenance: HyAxiom's in-house service team provides 24/7 remote monitoring, technical maintenance, and support for installed systems. The Control Center continuously monitors system operations and provides routine maintenance services. This represents an ongoing service revenue stream for the lifetime of installed systems.
4. Financing Solutions: HyAxiom structures financing solutions for customers including direct capital acquisitions, tax equity financing, operating leases, capital leases, and power purchase agreements (PPAs). These financing structures enable customers to deploy fuel cells without large upfront capital expenditure while providing HyAxiom and its financial partners recurring revenue.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

HyAxiom designs, manufactures, sells, and services stationary phosphoric acid fuel cell systems (the PureCell Model 400 platform in Hydrogen, Natural Gas, and LPG/NG Dual variants) generating 440-460 kW of electricity plus recoverable heat, with multi-unit configurations scaling into multi-megawatt installations. The company also develops and sells PEM electrolyzers (H500 producing 500 kg H2/day; H4300 producing 4,300 kg H2/day) for green hydrogen production, and provides project development, installation, 24/7 remote monitoring, and structured financing services including power purchase agreements.

Product overview

HyAxiom offers a comprehensive portfolio of hydrogen-based clean energy solutions centered around two core product lines: fuel cells and electrolyzers. The fuel cell portfolio is anchored by the PureCell® Model 400 platform, available in three variants (Hydrogen, Natural Gas, and LPG/NG Dual) generating 440-460 kW per unit, which can be scaled individually or in multi-megawatt configurations (Multi Megawatt Scalable Power) up to 10MW+ for AI infrastructure and microgrids. The electrolyzer line includes the PureCell™ H500 (500 kg/day) and PureCell™ H4300 (4300 kg/day) PEM electrolyzers for green hydrogen production. Emerging products include the Tri-Gen System (simultaneous hydrogen, electricity, and heat generation) and 300-kW Solid Oxide Fuel Cell (SOFC). Services encompass project development, installation, 24/7 remote monitoring and maintenance, and financing solutions (direct capital, tax equity, operating leases, PPAs).

Differentiator

Problem solved

Functional benefit

Products and services

• PureCell Model 400 Hydrogen Phosphoric acid fuel cell (PAFC) powered by pure hydrogen, generating up to 460 kW of clean electricity and up to 352 kW of heat with zero greenhouse gas emissions. Designed for combined heat and power (CHP), microgrids, utilities, and other applications requiring 24/7 sustainable autonomous power.
• PureCell Model 400 Natural Gas Phosphoric acid fuel cell (PAFC) using natural gas as primary fuel source, generating up to 460 kW of clean electricity with usable heat for heating, cooling, and facility needs. Delivers reliable power and energy efficiency for businesses seeking both baseload power and energy efficiency.
• PureCell Model 400 LPG/NG Dual Flexible phosphoric acid fuel cell (PAFC) operating on LPG or natural gas, generating up to 440 kW of clean electricity with 352 kW usable heat per unit. Supports dual operating modes and serves as emergency power supply when one fuel type is unavailable.
• Multi Megawatt Scalable Power Scalable power block configuration designed for AI infrastructure and microgrids, capable of scaling from individual 460 kW units to 10MW+ installations. Multiple PureCell M400 units coordinated and articulated to customer standards for larger power requirements.
• PureCell H500 PEM Electrolyzer Containerized PEM electrolyzer generating 500 kg H2/day with system efficiency of 51.8 kWh/kg H2. Flexible operations with <60 sec start time and 10 sec ramp time. Produces 99.999%+ hydrogen purity suitable for power generation, industrial applications, and energy storage.
• PureCell H4300 PEM Electrolyzer Modular PEM electrolyzer providing 4300 kg H2/day capacity with system efficiency of <51 kWh/kg H2. Designed for multi-megawatt scale-up (10-100+ MW) targeting heavy industrial sectors including refining, chemicals, and steelmaking.
• Project Development Services Tailored project development approach including detailed facility analysis, system design for seamless electrical and mechanical integration, and understanding of local restrictions, requirements, and available incentives to maximize investment returns.
• Installation Services Expert installation with experienced contractors covering design, permitting, interconnection, and system integration. Full support from start to finish with generations of expertise to ensure proper installation and optimal operation.
• Remote Monitoring and Technical Maintenance 24/7 in-house service team of engineers and technicians accessible in the U.S. and South Korea. Control Center provides continuous monitoring for optimal system operation with proactive issue resolution and routine maintenance for maximum uptime.
• Financing Solutions Flexible financing solutions including direct capital acquisitions, tax equity financing, operating leases, capital leases, and power purchase agreements. Structured in partnership with trusted finance providers who understand distributed energy projects.

Quantifiable outcome

• Up to 90% total efficiency with Combined Heat and Power (CHP) — significantly higher than combustion-based technologies
• +6 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

13 partnerships are on record, tiered supporting and core.

• KraftPowerconsupportingTechnology or Integration · 24 February 2026KraftPowercon was selected to supply a 5 MW-class rectifier system (H2Kraft containerized solution) for HyAxiom's hydrogen production project on Jeju Island, Korea. The solution converts AC grid power to controlled DC for electrolyzers, targeting under 3% harmonic distortion for stable operation and grid compatibility amid high renewable penetration. Delivery confirmed in December 2025.
• Scale MicrogridscoreStrategic or Co-development Partner · 2 April 2025Scale Microgrids is a vertically-integrated energy company that designs, builds, finances, owns, and operates distributed energy assets. Partnered with HyAxiom, NuPower, and C.E. Floyd on the 21-unit, 9.6 MW Charter Oak CHP Project in Bridgeport, Connecticut — HyAxiom's largest U.S. project to date. Scale provides project financing and development expertise.
• NuPower LLCcoreStrategic or Co-development Partner · 2 April 2025NuPower is a sustainable energy developer based in Connecticut focused on district energy, combined heat and power and battery storage projects. Key projects include Plainfield Biomass Project, Cherry Street Bridgeport CHP Project, and Bridgeport District Energy. Co-developer of the Charter Oak CHP Project with HyAxiom.
• C.E. Floyd CompanysupportingImplementation/ SI/ Consulting Partner · 2 April 2025C.E. Floyd Company is a general contractor and construction manager based in Middletown, CT and Concord, MA. They are a Certified B Corp and serve as general contractor/construction manager for the Charter Oak CHP Project in Bridgeport, CT.
• Kern EnergycoreStrategic or Co-development Partner · 25 February 2025Kern Energy is a family-owned California refinery and renewable fuel pioneer (90-year history). HyAxiom is partnering with Kern Energy and Claire Technologies on a first-of-its-kind hydrogen storage and utilization project at the Bakersfield refinery. Seven HyAxiom hydrogen-powered fuel cells will produce up to 3 MW of zero-emission electricity by reclaiming co-produced hydrogen. Expected to come online in 2027.
• Claire TechnologiescoreStrategic or Co-development Partner · 25 February 2025Claire Technologies provides low carbon hydrogen solutions including the patented EzH2 bimodal hydrogen storage and release system. Partnered with HyAxiom and Kern Energy on the Bakersfield refinery project, providing hydrogen storage technology that enables large-scale energy storage using existing refinery tankage.
• ShellcoreStrategic or Co-development Partner · 25 March 2024Shell signed a consortium agreement with HyAxiom, Doosan Fuel Cell, and HD Korea Shipbuilding & Marine Engineering to develop, manufacture, and install a 600-kW Solid Oxide Fuel Cell (SOFC) Auxiliary Power Unit on a Shell-chartered LNG vessel. The year-long 2025 test aims to demonstrate SOFC technology's ability to reduce carbon emissions from maritime transport.
• DNVsupportingTechnology or Integration · 25 March 2024DNV is the classification society and recognized advisor for the maritime industry. HyAxiom and Doosan Fuel Cell's SOFC cell stack became the world's first to pass DNV's critical environmental testing for maritime application, including temperature, humidity, vibration, inclination, and electromagnetic interference tests.
• Government of South Australia / Office of Hydrogen Power South AustraliasupportingStrategic or Co-development Partner · 9 February 2023HyAxiom, Doosan Fuel Cell Co., Ltd., and the South Australian government signed a Statement of Cooperation to accelerate the green hydrogen industry. Plans include a combined plant with 250MW electrolyzers, 200MW hydrogen power plants and fuel cells, and hydrogen storage facilities. South Australia aims for 100% renewable energy by 2030.
• HD Korea Shipbuilding & Marine Engineering (HD Korea Shipbuilding)coreStrategic or Co-development Partner · 1 January 2022HD Korea Shipbuilding & Marine Engineering is an intermediate holding company in the shipbuilding sector of HD Hyundai Group. Part of the consortium with Shell, HyAxiom, and Doosan Fuel Cell to develop and deploy SOFC propulsion systems for maritime applications.
• Doosan GroupcoreOEM/ Whitelabel/ Licensing Partner · 1 January 2014Doosan Group acquired UTC's fuel cell business unit in 2014, establishing HyAxiom. Doosan's 125-year history of innovation and large-scale manufacturing expertise underpins HyAxiom's operations. Doosan Group encompasses Doosan Enerbility (gas turbines, SMRs), Doosan Bobcat (compact equipment), and Doosan Robotics (cobots). Doosan Enerbility has secured supplier contracts with a prominent U.S. tech company for gas turbine technology.
• Doosan Fuel Cell Corporation (DFCC)coreOEM/ Whitelabel/ Licensing PartnerDoosan Fuel Cell Corporation (DFCC) is an affiliate and fellow member of Doosan Group. DFCC licenses, markets, distributes, and services HyAxiom's PAFC and other technologies in South Korea, extending HyAxiom's reach in the Korean market. DFCC and HyAxiom jointly developed the world's first SOFC cell stack to pass DNV maritime environmental testing.
• DESA Service LLC (Doosan Energy Solutions America)coreImplementation/ SI/ Consulting PartnerDESA Service LLC, a subsidiary of Doosan Energy Solutions America Inc., owns and operates HyAxiom fuel cell projects. For projects including Bobcat (Bismarck/Gwinner) and University of Hartford, the project is owned and operated by DESA Service LLC, enabling HyAxiom to deploy systems without taking ownership of operating assets.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Market position

Competitive moat6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/hyaxiom
• Xx.com/HyAxiom

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors4 records

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

M&A

Investments1 record

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

Frequently asked questions about HyAxiom