E-Flox

What E-Flox does

E-Flox GmbH is a German engineering company founded on 1 January 2006 as a wholly-owned subsidiary of WS Wärmeprozesstechnik GmbH, headquartered in Renningen near Sindelfingen. The company designs and manufactures custom combustion systems for problematic, low-calorific, and residual gases, built on the patented FLOX® flameless oxidation technology invented by its parent. Its product portfolio spans six core lines: low-calorific gas combustion for biogas upgrading residuals, landfill gas combustion systems (DGV process), syngas/pyrolysis gas combustion, industrial post-combustion (FLOX® TNV, 10-5,000 Nm³/h range), ship tank degassing (Superflox1), and the BTH400/BTH100 turnkey container systems for producing RED II-certified green hydrogen from biogas via steam reforming.

The business operates a sales-led, project-based model: each plant is individually engineered to the customer's residual gas quality and capacity requirements, with revenue generated from equipment sales, engineering and project development services, and recurring maintenance, commissioning, and spare parts. GTM combines direct enterprise field sales with an international network of exclusive channel partners in France, Italy, the Nordics, Switzerland, Poland, Brazil, and the USA. The company is ISO 9001:2015 certified (valid until February 2028) and was honored with the 2011 German Environmental Award. Recent milestones include the 2025 relocation to a larger Renningen production facility, the March 2026 TÜV certification check of the BTH100, and the July 2026 commissioning of the first inland-barge degassing system in the Netherlands.

Name

E-Flox

Legal name

e-flox GmbH

Website

https://e-flox.de

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

E-Flox GmbH, founded in 2006 and headquartered in Renningen, Germany, is a subsidiary of WS Wärmeprozesstechnik GmbH that engineers custom combustion systems for problematic, low-calorific, and residual gases using patented FLOX® flameless oxidation technology, serving biogas, landfill, industrial, shipping, and green hydrogen customers.

Ownership category

akta.pro rank

Product category

Industrial combustion systems for low-calorific gases

NAICS

Power Boiler and Heat Exchanger Manufacturing (33241)

SIC

Industrial Process Furnaces & Ovens (3567), Engines & Turbines (3510), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

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

akta.pro secondary industries

Biomass Combustion & Boiler Island Technology (Grates, Fluidized Bed, Burners) (EUAAAGAG), Industrial Steam Systems Decarbonization (Boiler Upgrades, Condensate Recovery, Steam Optimization) (EUABAJAK)

Keywords

• Industrial combustion systems
• Flameless combustion technology
• Biogas residual gas combustion
• Landfill gas treatment systems
• Green hydrogen from biogas

Headquarters

HQ city

Renningen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Combustion plant equipment sales: Sale of combustion systems and plants for various gas combustion applications including landfill gas, biogas upgrading residual gas, syngas, industrial post-combustion, ship tank degassing, and green hydrogen production. Each solution is developed individually, tailored to customer plant specifications, residual gas quality, and requirements.
2. Engineering and project development services: Technical sales and project development including conceptualization, solution design, and project management through to customer acceptance. Engineering studies for complex projects to develop customized solutions.
3. Maintenance, servicing and spare parts: Ongoing maintenance, servicing, commissioning, and control system optimization services. Remote support capabilities. Adaptation to site-specific infrastructure. Spare parts supply.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

E-Flox designs, engineers, and manufactures industrial combustion plants based on the patented FLOX® flameless combustion technology for the safe, efficient, and low-emission combustion of problematic and low-calorific gases, including biogas residual gases, landfill gas, syngas, and industrial exhaust streams. The company also produces the BTH-series turnkey containerized systems for decentralized green hydrogen production from biogas via steam reforming, and provides plant planning, commissioning, maintenance, and remote support services.

Product overview

E-Flox GmbH is a subsidiary of WS Wärmeprozesstechnik GmbH, specializing in combustion systems for problematic and low-calorific gases. The product portfolio centers on the patented FLOX® flameless combustion technology and includes six core product lines: (1) Low-calorific Gas from Biogas Upgrading for combustion of residual methane from biogas processing with up to 85% waste heat efficiency; (2) Landfill Gas Combustion Systems using the DGV process for complete, slip-free oxidation; (3) Syngas Combustion Systems for product gases from thermal conversion of solids; (4) FLOX® TNV for industrial post-combustion (10-5,000 Nm³/h); (5) Superflox1 for ship tank degassing; and (6) BTH series (BTH400/BTH100) for green hydrogen production from biogas via steam reforming. The BTH400 is a turnkey container solution producing green hydrogen 24/7 at 60%+ efficiency, RED II certified. The company also offers comprehensive services including plant planning, commissioning, maintenance, and remote support.

Differentiator

Problem solved

Functional benefit

Brands

• FLOX® Technology: Patented flameless combustion technology developed by WS Wärmeprozesstechnik GmbH, enabling efficient and low-emission combustion of low-calorific gases without visible flame.
• BTH – Green Hydrogen Bio
• FLOX® TNV
• e-flox® DGV

Products and services

• BTH400 – Green Hydrogen from Biogas Turnkey container solution for producing green hydrogen from biogas via steam reforming. Operates 24/7, 365 days per year with at least 60% efficiency, and is RED II certified as the first green hydrogen from biogas (via redcert and ISCC). Designed for biogas plant operators targeting decentralized, local hydrogen hubs.
• Low-calorific Gas Combustion Plants for Biogas Upgrading Combustion plants for residual methane gases from biogas processing (PSA and membrane gas treatment). Achieves waste heat utilization efficiency of up to 85%, with exhaust temperatures of 250-800°C for downstream heat recovery.
• Landfill Gas Combustion Systems (DGV) Combustion systems for landfill gas with very low methane concentrations using the e-flox DGV process. Features complete, slip-free combustion with maximum waste heat utilization, enabling safe and continuous degasification of landfills even at very low methane levels. In successful use in numerous European countries.
• Syngas Combustion Systems Customized combustion systems for product gases from thermal conversion of solid materials (syngas, synthesis gas, pyrolysis gas). Hot and tar-containing gas can be burned directly without complex purification. Waste heat utilization via warm/hot water boilers, steam boilers, hot air extraction, or ORC/EFGT processes.
• FLOX® TNV – Recuperative Post-combustion System Recuperative thermal post-combustion system for industrial residual gases, ready for operation after just 30 minutes warm-up and covering 10 to 5,000 Nm³/h. Integrated recuperative burner reduces energy consumption by up to 50% compared to directly-fired systems and converts over 99% of gases to CO2 and water.
• Superflox1 – Ship Tank Degassing System Flameless FLOX® oxidation system for degassing ship tanks (inland waterway vessels) and stationary storage tanks. Two-container system (10ft + 30ft containers) covers 10 to 5,000 Nm³/h and converts over 99% of hydrocarbon vapors to CO2 and water, enabling compliance with EU inland water transport waste handling rules.

Quantifiable outcome

• Up to 85% residual heat utilization efficiency
• +5 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Ten partnerships are on record, tiered core and flagship.

• Verdemobil Biogaz S.A.S.coreChannel Partner/ Reseller/ DistributorExclusive channel partner for France providing consulting, engineering and service for e-flox products including biogas combustion systems, landfill gas systems, and hydrogen solutions.
• TCD Italia srlcoreChannel Partner/ Reseller/ DistributorChannel partner for Italy providing local sales and service support for e-flox combustion systems.
• Biogas Systems Nordic ABcoreChannel Partner/ Reseller/ DistributorChannel partner for Sweden and Norway providing sales and service for e-flox biogas and gas combustion products.
• M. Burkhard AGcoreChannel Partner/ Reseller/ DistributorChannel partner for Switzerland providing sales and service for e-flox products.
• Andrzej Sumionka ConsultingcoreChannel Partner/ Reseller/ DistributorSales and project management partner for Poland, providing local expertise and business development for e-flox products in the Polish market.
• Gruen Biogás Ltda.coreChannel Partner/ Reseller/ DistributorChannel partner for Brazil providing sales and service for e-flox biogas and gas combustion solutions in the South American market.
• Itus Global, Inc.coreChannel Partner/ Reseller/ DistributorChannel partner for USA providing consulting, engineering and project management services for e-flox products in the North American market.
• WS Wärmeprozesstechnik GmbHflagshipStrategic or Co-development PartnerParent company and inventor/patent holder of FLOX® technology. e-flox GmbH was founded on January 1, 2006 specifically to develop and apply FLOX® technology in plant engineering. Parent company supports growth through investment in new facilities and long-term strategic direction. Dr. Wünning Sr., inventor of FLOX® technology, received German Environmental Award with his son.
• BtX Energy GmbHcoreStrategic or Co-development PartnerAffiliate company that collaborated with e-flox on the BTH100 and BTH400 hydrogen production projects. Sister company providing complementary expertise in hydrogen and energy systems.
• WS Reformer GmbHcoreTechnology or IntegrationSister company that supplies the SteamReformer M50 core component for the BTH100 and BTH400 biogas-to-hydrogen systems. Provides key technology integration for green hydrogen production plants.

Scale indicators8 records

Recent moves7 records

Expansion highlights5 records

Emerging players

• EnviTec Biogas AG: German biogas plant builder and operator. Targets the same agricultural/landfill biogas customer base; emerging into biomethane and biogas-to-hydrogen retrofits that compete with e-flox's BTH400 value proposition.
• McPhy Energy: French hydrogen equipment specialist focused on electrolyzers and refueling stations. Adjacent competitor in decentralized green hydrogen production with overlapping EU customer targets (France, Germany).
• Nel ASA: Norwegian electrolyzer and hydrogen technology company. Competes in the decentralized green-hydrogen space but via alkaline/PEM electrolysis rather than biogas steam reforming; an emerging alternative for the same end-customer use case.

Broad incumbents

• Hitachi Zosen Inova (HZI): Large-scale EPC contractor for anaerobic digestion and biogas-to-energy plants globally. Addresses the same biogas operator customer base as e-flox, but as a full plant builder rather than a specialized combustion subsystem supplier.
• Wärtsilä (Marine & Energy): Finnish major in marine engines and gas energy solutions. The marine overlap is direct — both target inland/ship tank vapor management — but Wärtsilä also sells large gas engines, putting it in e-flox's adjacent biogas-CHP competitor space.
• ANDRITZ Group: Austrian industrial equipment group with a dedicated biomass/biogas separation and drying division. Touches the same value chain (biogas processing, gas treatment) as e-flox but with a much broader industrial portfolio.

Direct peers

• Saacke GmbH: German industrial burner and combustion systems manufacturer of similar size and heritage. Directly comparable on industrial combustion technology, custom-engineered plant deliveries, and German Mittelstand positioning; overlaps with e-flox in biogas upgrading and industrial post-combustion use cases.
• Fives Group (Pillard): Pillard, a brand of Fives, manufactures industrial burners and combustion systems for process industries. Direct competitor in low-calorific and special-gas burner markets; comparable on engineering complexity and project-based sales.
• Max Weishaupt GmbH: Family-owned German burner and combustion equipment manufacturer. Competes in industrial burner markets including biogas and waste-gas applications; comparable in technology focus and customer type, though typically larger scale and broader product breadth.
• ZEECO: US-based global supplier of industrial combustion equipment including thermal oxidizers, flares, and burners. Direct overlap on thermal post-combustion systems and landfill/biogas combustion, with a similar engineering-to-order delivery model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/e-flox-gmbh

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 E-Flox