EFUEL

Name

EFUEL

Legal name

E-Fuel Corporation

Website

https://efuel100.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

E-Fuel Corporation is a private Austin, Texas-based developer of the Rejected Energy Reactor (RER), a cogeneration system that captures wasted fuel energy into electricity and carbon-negative fuel, delivered via an energy-as-a-service model to off-grid residential, commercial, industrial, and aerospace customers.

Ownership category

akta.pro rank

Product category

Cogeneration and Distributed Power Generation

NAICS

Electric Power Generation (22111), Biomass Electric Power Generation (221117), Petroleum and Coal Products Manufacturing (3241)

SIC

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

akta.pro industry

PRIMARYEUABAIAA

E‑Fuels & Synthetic Hydrocarbons (e‑kerosene, e‑diesel, e‑gasoline, e‑methane)

Energy, Utilities & Environment/Carbon & Climate Solutions (Carbon Markets, Offsets, CCS/CCUS)/CO₂ Utilization & Carbon-to-Value (E-fuels, Chemicals, Building Materials)

SECONDARYEUACALAK

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

Energy, Utilities & Environment/Electric Power Generation/Distributed & Behind-the-Meter Power Generation (Microgrids, DG)

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

• Cogeneration systems
• Energy-as-a-service
• Carbon-negative fuel
• Decentralized power generation
• Rejected energy capture

Headquarters

HQ city

Austin

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, Infrastructure, Operations, Personnel, Marketing or Sales, Supply Chain

Revenue model

1. Energy-as-a-Service: E-Fuel does not sell equipment directly but offers energy services instead. The cost of rejected energy captured is negligible, allowing for competitive pricing. The company creates an international utility service model through local partnerships for installation, maintenance, and service of RER units.
2. RER Product Delivery: Crude oil and ethanol beer delivery service managed by E-Fuel using third-party services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

E-Fuel Corporation develops and deploys the Rejected Energy Reactor (RER), a proprietary cogeneration system that captures wasted "rejected energy" from fuel and converts it into usable electrical power and carbon-negative fuel. The company sells energy-as-a-service through local partnerships for installation, maintenance, and operation, rather than selling RER units directly to customers.

Product overview

E-Fuel Corporation offers a unified portfolio centered on the Rejected Energy Reactor (RER) — its core proprietary technology that converts wasted 'rejected energy' from conventional fuels into both electrical power and carbon-negative fuel. The product line includes ethanol (E100%), hydrogen, and kerosene jet fuel production capabilities, all delivered under an energy-as-a-service business model rather than direct equipment sales. The company operates from Austin, Texas, targeting off-grid and decentralized applications across residential, commercial, data center, agricultural, aerospace, and industrial sectors worldwide.

Differentiator

Problem solved

Functional benefit

Brands

• Rejected Energy Reactor (RER): A novel system designed to capture and repurpose wasted energy ('rejected energy') into usable power and carbon-negative fuel. Converts fuel (ethanol, gasoline, diesel, natural gas, & jet-fuel) into both electricity and fuel.

Products and services

• Rejected Energy Reactor (RER) E-Fuel's flagship cogeneration system that captures and repurposes wasted "rejected energy" from fuel into usable electrical power and carbon-negative fuel, converting inputs such as ethanol, gasoline, diesel, natural gas, and jet fuel into both electricity and fuel output. Intended for off-grid and decentralized applications across residential, commercial, data center, agricultural, aerospace, and industrial sectors.
• Energy-as-a-Service Service offering in which E-Fuel does not sell RER units directly but instead delivers energy services to customers, including installation, maintenance, and ongoing operation of RER systems, plus third-party-managed delivery of crude oil and ethanol feedstocks.

Quantifiable outcome

• Reduces fuel consumption by approximately 67% (2/3 reduction) when using ethanol - for every 3 gallons, 1 produces fuel and electrical power

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Five partnerships are on record, tiered flagship, core and minor.

• TU Delft (Faculty of Technology, Policy and Management)flagshipStrategic or Co-development Partner · 3 February 2026TU Delft leads the SPROUT project (5.6 million euro initiative) focused on transforming Dutch greenhouse horticulture from fossil fuel-based combined heat-and-power systems to renewable energy. The project will develop Multi-Carrier Energy Hubs combining electricity, heat, hydrogen, and CO2 to prevent greenhouses from straining the national grid. E-Fuelution is one of the project partners involved in this real-life demonstration at a greenhouse in Monster.
• Division QcoreStrategic or Co-development Partner · 3 February 2026Division Q is a partner in the SPROUT project led by TU Delft, contributing to the development of Multi-Carrier Energy Hubs for Dutch greenhouse horticulture transition to renewable energy.
• eFuelutioncoreStrategic or Co-development Partner · 3 February 2026eFuelution is a partner in the SPROUT project led by TU Delft, working on transforming Dutch greenhouse horticulture from fossil fuel-based systems to renewable energy with Multi-Carrier Energy Hubs.
• ResourcefullyminorStrategic or Co-development Partner · 3 February 2026Resourcefully is a partner in the SPROUT project, contributing to the greenhouse horticulture energy transition initiative.
• WestlandInframinorStrategic or Co-development Partner · 3 February 2026WestlandInfra is a partner in the SPROUT project, providing infrastructure expertise for the greenhouse energy transition in the Westland region of the Netherlands.

Scale indicators2 records

Recent moves3 records

Expansion highlights4 records

Broad incumbents

• FuelCell Energy: FuelCell Energy produces stationary fuel cell power plants for distributed generation, utility-scale projects, and hydrogen production — directly comparable to E-Fuel's combined electricity + hydrogen offering. It is an established public peer in the distributed clean power space.
• Bloom Energy: Bloom Energy manufactures solid oxide fuel cells for distributed behind-the-meter power generation, directly overlapping with E-Fuel's off-grid power value proposition. It is a much larger, publicly listed incumbent that E-Fuel would compete with for data center and commercial power customers.
• Plug Power: Plug Power is a leading hydrogen fuel cell and green hydrogen producer, competing with E-Fuel on both distributed power and hydrogen production. It serves material handling, e-mobility, and stationary power customers with hydrogen-based solutions.
• Cummins (CHP / Power Generation): Cummins' Power Generation business produces natural gas and biogas CHP systems and fuel cell products for distributed power, directly overlapping with E-Fuel's cogeneration/CHP value proposition. It is a well-capitalized incumbent with global service and warranty infrastructure.
• Caterpillar (CAT) — CHP / Gas Engines: Caterpillar manufactures gas engines and CHP systems used for distributed power and cogeneration, serving commercial and industrial customers with proven installations. It is a major incumbent in the cogeneration equipment market that E-Fuel would compete with for industrial off-grid buyers.

Emerging players

• Prometheus Fuels: Prometheus Fuels produces net-zero carbon gasoline and jet fuel from CO2 and renewable electricity. It is a direct e-fuels competitor to E-Fuel, especially in the gasoline/jet fuel end markets.
• LanzaTech: LanzaTech converts waste gases (and has expanded into ethanol and sustainable aviation fuel) using proprietary gasification and biocatalysis, producing both fuels and chemicals from carbon inputs. It is a direct analog in the alternative fuel production space and a key competitor for E-Fuel's e-kerosene and ethanol output.
• Infinium: Infinium produces e-fuels (e-kerosene, e-diesel, e-naphtha) from green hydrogen and captured CO2, directly competing with E-Fuel's e-kerosene and ethanol product lines. Both target the sustainable aviation fuel market with synthetic fuel technology.

Direct peers

• Capstone Green Energy: Capstone manufactures microturbine-based combined heat and power (CHP) systems for distributed generation, a directly analogous product category to E-Fuel's RER. It targets similar off-grid and commercial/industrial customers with packaged cogeneration solutions.
• Aemetis: Aemetis produces renewable fuels (ethanol, biodiesel, SAF) and operates biogas/cogeneration assets, overlapping with E-Fuel's ethanol, hydrogen, and jet fuel production focus. It is a publicly listed alternative fuels producer serving similar end markets.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights5 records

Customer concentration

• Xx.com/efuel
• YouTubeyoutube.com/channel/UCOgX-CYk61_RtSvI7DM-26Q/featured?view_as=subscriber
• Facebookfacebook.com/pages/category/Energy-Company/E-Fuel-130781436995408
• LinkedInlinkedin.com/company/e-fuel-corporation
• Instagraminstagram.com/efuel

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 EFUEL