Hydrogen Energy Systems

What Hydrogen Energy Systems does

Hydrogen Energy Systems, LLC (operating as HES Hydrogen) is an Akron, Ohio-based private company founded in December 2007 by CEO Jeff Wilhite. The company has developed the Hydrogen Mixing Block™, a patented mechanical device (U.S. and Mexico patents) that replaces the carburetor or electronic fuel injector in small internal combustion engines (ICE), enabling them to run on 100% compressed hydrogen. The technology is purely mechanical, requires no computerized control, and uses only 20 parts compared to 60 for a carburetor or 133 for an electronic fuel injector, positioning it as an affordable hydrogen conversion solution for the small engine mass market. The Mixing Block has been validated on engines from 6 HP to 13 HP (with stated scaling potential to 30 HP), achieving 0 grams of regulated pollutants per hour versus 66 grams/hour for equivalent gasoline engines and 600+ hours of demonstrated runtime.

The company has built out a product portfolio spanning the core Mixing Block, prototype end-applications (a portable generator demonstrated publicly on June 20, 2012, and a 6-passenger golf shuttle currently in testing), and supporting hydrogen production and distribution infrastructure including home electrolyzers ($1,500–$3,000), commercial electrolyzers, and an aluminum hydrogen cylinder exchange program planned for distribution through gas stations, hardware stores, tool rental locations, and home improvement retailers. Target use cases span portable generators, golf carts/shuttles, outdoor power equipment, forklifts, transportation and specialty vehicles (motorcycles, scooters, ATVs, marine, farm, construction), and military applications.

HES is founder-owned, entirely bootstrapped with no disclosed venture or institutional capital, and operates with 1–10 employees. Revenue is not disclosed and the company remains in prototype stage for its end-application products. The go-to-market is sales-led, targeting small engine OEMs and consumers, with awareness driven through a content website, organic social (Facebook, LinkedIn, YouTube), and periodic press demonstrations. Distribution is envisioned as a hybrid OEM-licensing model for the Mixing Block plus retail tank exchange and direct electrolyzer sales.

Name

Hydrogen Energy Systems

Legal name

Hydrogen Energy Systems, LLC

Website

https://heshydrogen.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

Hydrogen Energy Systems develops a patented mechanical Hydrogen Mixing Block that enables small internal combustion engines to run on 100% compressed hydrogen, targeting small engine OEMs and consumers in portable generators, golf carts, outdoor power equipment, and specialty vehicles.

Ownership category

akta.pro rank

Product category

Hydrogen Fuel Systems

NAICS

Other Engine Equipment Manufacturing (333618), Air and Gas Compressor Manufacturing (333912), Pump and Compressor Manufacturing (33391)

SIC

Engines & Turbines (3510), Cogeneration Services & Small Power Producers (4991)

akta.pro industry

PRIMARYIMAEACAB

Hydrogen (Industrial & Mobility)

Industrials, Manufacturing & Construction/Chemicals & Industrial Materials/Industrial Gases

SECONDARYIMAGAHAM

Hydrogen Energy Storage & Power-to-X Equipment (electrolyzers, storage, fuel cell systems)

Industrials, Manufacturing & Construction/Electrical Equipment & Industrial Electronics/Batteries, Energy Storage & Charging Equipment (Industrial ESS, chargers)

SECONDARYEUACAKAF

Hydrogen CHP (Fuel Cell & H2-Ready Turbines)

Energy, Utilities & Environment/Electric Power Generation/Combined Heat & Power (CHP) / Cogeneration

SECONDARYEUABAJAC

Hydrogen & Derivative Fuels for Industry (H₂, Ammonia, Methanol)

Energy, Utilities & Environment/Carbon & Climate Solutions (Carbon Markets, Offsets, CCS/CCUS)/Industrial Decarbonization Solutions (Process Heat, Electrification, Fuel Switching)

Keywords

• Hydrogen engine technology
• Hydrogen mixing block
• Zero emission engines
• Electrolyzer systems
• Hydrogen fuel systems

Headquarters

HQ city

Akron

HQ country

United States

HQ region

North America

Offices1 record

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. Mixing Block™ Hardware Sales: Sale of the Mixing Block device that replaces carburetors/fuel injectors for small internal combustion engines. The device has fewer components (20 parts) than carburetors (60 parts) or fuel injectors (133 parts), making it less expensive to manufacture.
2. Electrolyzer Systems: Home electrolyzer units for on-site hydrogen production ($1,500-$3,000 for home versions). Commercial electrolyzer systems priced based on size and volume requirements. Enables customers to produce their own hydrogen from water and electricity.
3. Hydrogen Tank Exchange: Distribution of aluminum hydrogen cylinders for exchange similar to propane tank programs. Available at gas stations, hardware stores, tool rentals, and home improvement retailers.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Hydrogen Energy Systems sells the patented Hydrogen Mixing Block™, a 20-part mechanical device that replaces carburetors or electronic fuel injectors to run small internal combustion engines on 100% compressed hydrogen. The company also sells home and commercial electrolyzers for on-site hydrogen production and operates an aluminum cylinder tank exchange program similar to propane distribution.

Product overview

Hydrogen Energy Systems offers a unified product architecture centered on the Hydrogen Mixing Block™, a mechanical device that replaces carburetors or fuel injectors to enable internal combustion engines to run on 100% compressed hydrogen. The product portfolio includes prototype applications such as the Portable Generator and Golf Shuttle, as well as supporting infrastructure products like the Home Electrolyser and Commercial Electrolyser for hydrogen production and refueling. The core Mixing Block technology is designed to be transitional across multiple engine horsepower ratings (tested up to 13 HP, with potential up to 30 HP) and achieves zero emissions performance.

Differentiator

Problem solved

Functional benefit

Brands

• Mixing Block™: A device that replaces the carburetor or electronic fuel injector, delivering the exact mix of hydrogen and air to successfully and efficiently run small internal combustion engines. Patented in the U.S. and Mexico.

Products and services

• Hydrogen Mixing Block™ Patented 20-part mechanical device that replaces carburetors or electronic fuel injectors in small internal combustion engines to deliver the exact mix of hydrogen and air, enabling operation on 100% compressed hydrogen with zero regulated pollutant emissions. Targeted at small-engine manufacturers and OEM integrators.
• Portable Generator Prototype Demonstration prototype of a portable generator using Mixing Block hydrogen internal combustion technology, positioned as a zero-emissions, low-CO-poisoning-risk alternative to gasoline portable generators.
• Golf Shuttle Prototype Demonstration prototype of a 6-passenger golf shuttle using the hydrogen-powered internal combustion engine Mixing Block technology, intended for enclosed-environment, zero-emissions transportation.
• Home Electrolyser Home electrolysis unit that allows homeowners to produce their own hydrogen from water and electricity supply for refueling hydrogen tanks, typically running overnight at off-peak power rates.
• Commercial Electrolyser Commercial-scale electrolyser system for business use to produce hydrogen on-site, with pricing based on unit size and daily, weekly, or monthly volume requirements.
• Aluminum Hydrogen Cylinder Tank Exchange Aluminum hydrogen cylinders available through an exchange program similar to propane tank distribution, stocked at gas stations, hardware stores, tool rentals, and home improvement retailers such as Lowe's, Home Depot, and U-Haul.

Quantifiable outcome

• Zero regulated pollutants per hour vs. 66 grams/hour for gasoline engines
• +4 more outcomes

Segments6 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Greenworks Tools: Battery-electric outdoor power equipment OEM (lawn mowers, generators, etc.) directly competing with HES's outdoor-power-equipment and portable-generator targets. The primary BEV alternative path for the same EPA-regulated small-engine market HES is pursuing.
• Briggs & Stratton: Major small-engine OEM whose product portfolio (generators, lawn mowers, outdoor power equipment) is HES's primary target market. A potential OEM licensee for the Mixing Block, and an incumbent competitor whose gasoline engines face the same EPA Phase 3 mandates HES targets.
• ITM Power: UK-based PEM electrolyzer manufacturer supplying hydrogen production systems for industrial, mobility, and refueling applications. Directly comparable on electrolyzer product line and on supplying fueling infrastructure that hydrogen ICE engines like HES's would require.
• Nel ASA: Pure-play electrolyzer manufacturer producing alkaline and PEM units for hydrogen production at multiple scales. Directly comparable to HES's Home and Commercial Electrolyser revenue stream and overall hydrogen-production positioning.

Broad incumbents

• Ballard Power Systems: Established fuel-cell and hydrogen powertrain company focused on heavy-duty mobility (buses, trucks, trains, marine). Compares to HES as a larger, well-capitalized hydrogen-mobility incumbent pursuing zero-emission motive power — but using fuel cells rather than hydrogen ICE.
• Plug Power: Public hydrogen fuel-cell and electrolyzer company targeting material handling, forklifts, and stationary power. Highly comparable to HES's industrial/forklift use case, and a direct overlap in electrolyzer-product strategy.
• Air Products: Largest U.S. hydrogen producer with the broadest hydrogen refueling and distribution infrastructure. Relevant to HES as the upstream hydrogen supply partner whose existing 9 million-ton U.S. production footprint could enable or constrain HES's fuel availability thesis.
• Cummins (Accelera): Cummins' Accelera segment develops hydrogen ICE engines (especially for heavy-duty trucks), electrolyzers, and fuel cells. Directly comparable in pursuing hydrogen combustion as a decarbonization path and a major potential strategic acquirer or competitor of HES's small-engine approach.
• Honda (Hydrogen ICE Program): Honda has publicly developed hydrogen combustion engine technology for automotive and small-engine applications. Comparable as a larger, R&D-intensive competitor pursuing hydrogen ICE for ICE products HES also targets.

Emerging players

• JCB: UK construction-equipment OEM that has demonstrated a hydrogen combustion engine in a backhoe loader. Comparable as a sector-adjacent hydrogen ICE developer whose end-market (construction/agricultural small engines) overlaps with HES's specialty-vehicle segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/H2EnergySystems
• Facebookfacebook.com/heshydrogen
• LinkedInlinkedin.com/company/hydrogen-energy-systems-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Hydrogen Energy Systems