AAT Abwasser

What AAT Abwasser does

AAT Abwasser- und Abfalltechnik GmbH, founded in 1993 and headquartered in Wolfurt, Austria, is a privately held engineering office, biogas plant manufacturer, and component supplier operating globally. The company designs and delivers full-scope anaerobic digestion systems that treat organic waste and high-strength wastewater while producing renewable biogas energy, serving four primary customer verticals: disposal companies, agricultural operations and NAWARO producers, municipal wastewater utilities, and industrial process-waste generators such as pulp mills, food processors, and breweries. AAT has commissioned more than 130 large-scale plants across 30 countries, with approximately 1,000 customers using its components and know-how.

The technical core is the proprietary hydraulic digester, which mixes substrate without internal moving parts or external mixing energy, yielding high operational availability — AAT reports 8,600 full load hours per year, roughly 98% plant availability. The product portfolio spans six digester variants (hydraulic, flat, CSTR, dry via subsidiary AAT Anka, package plant, UASB) plus a comprehensive aftermarket component suite: agitators, flares, gas storage, hygienisation, activated carbon filters, desulphurisation, gravel filters, and condensate traps. The company has engineered plants for over 150 substrates including food waste, whey, sugar beet, sewage sludge, manure, stillage, and agricultural residues.

Commercially, AAT runs an enterprise field-sales motion delivering feasibility studies, engineering, equipment supply, assembly, commissioning, and recurring biological support under multi-year project contracts. Distribution is handled through six named regional partners across Australia/New Zealand, Brazil, Estonia, Norway/Iceland, Poland, and Southeast Asia, supplemented by direct engagement in DACH. The company holds ISO 9001, 14001, and 45001 certifications, participates in EU research consortia including SYMSITES (Horizon Europe), and collaborates scientifically with TU Wien and IFA Tulln. Notable award-winning references include the Berglandmilch Wels plant (Energy Globe Austria 2006) and the SIF Energy Oregon facility (Food Engineering Sustainable Plant of the Year 2012).

Name

AAT Abwasser

Legal name

AAT Abwasser- und Abfalltechnik GmbH

Website

https://aat-biogas.at

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

AAT Abwasser- und Abfalltechnik GmbH is a privately held Austrian engineering firm, founded 1993, that designs and delivers turnkey biogas plants and proprietary digester components for organic waste and wastewater treatment across 30 countries, serving municipalities, agriculture, disposal companies, and industrial clients.

Ownership category

akta.pro rank

Product category

Biogas Plant Engineering

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132)

SIC

Misc Industrial & Commercial Machinery & Equipment (3590)

akta.pro primary industry

Biofuel Plant EPC, O&M & Process Technology Providers (EUAAAHAK)

akta.pro secondary industry

Anaerobic Digestion (AD) & Biogas/RNG Production (Organics Feedstocks) (BPALAEAC)

Keywords

• Biogas plant engineering
• Anaerobic digestion systems
• Wastewater treatment solutions
• Biogas plant components
• Organic waste processing

Headquarters

HQ city

Wolfurt

HQ country

Austria

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure

Revenue model

1. Biogas Plant Design, Engineering & EPC: Full-scope engineering, planning, and turnkey delivery of biogas plants including feasibility studies, concept development, permit planning, process planning, detailed planning, construction management, and commissioning. Projects range from single components to complete anaerobic digestion facilities.
2. Equipment & Component Supply: Supply of proprietary biogas plant components including fermenters, agitators, flares, gas storage systems, hygienisation units, activated carbon filters, desulphurisation systems, gravel filters, condensate traps, and digestate storage equipment. Components are also supplied as standalone products to third-party plant operators.
3. Biological Support & After-Sales Service: Ongoing biological consulting, operational support, and service for installed biogas plants. Includes optimization of substrate processing, process monitoring, and troubleshooting support to ensure maximum plant availability and biogas yield.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

AAT Abwasser- und Abfalltechnik GmbH is an independent engineering office, plant manufacturer, and component supplier that designs, plans, supplies, and commissions complete biogas plants and wastewater treatment systems. The company delivers turnkey solutions including fermenters, biogas upgrading and utilization components (flares, gas storage), and downstream treatment equipment such as hygienisation, desulphurisation, and filtration, supported by feasibility studies and long-term biological support services.

Product overview

AAT Abwasser- und Abfalltechnik GmbH is a full-service biogas plant provider offering integrated solutions from planning through commissioning and after-sales support. The core product portfolio centers on the proprietary hydraulic mixing digester, complemented by five additional digester types (CSTR, flat, dry, package plant, UASB). Supporting the digester systems is a comprehensive equipment suite including agitators, flares, gas storage, hygienisation, activated carbon filters, desulphurization, gravel filters, and condensate traps. The company handles over 150 different organic substrates across its installations.

Differentiator

Problem solved

Functional benefit

Products and services

• Hydraulic Digester (Hydraulischer Fermenter) Proprietary digester system using hydraulic mixing, suitable for both wastewater and organic waste, including food waste and agricultural residues.
• Biogas Flares (Biogasfackel) Enclosed and open flares for the safe combustion of biogas, supplied as standalone components for biogas plants.
• UASB Plants (UASB-Anlage) Upflow Anaerobic Sludge Blanket reactors for industrial and municipal wastewater treatment, supplied as prefabricated plant units.
• Package Plant / Kompaktfaulung Compact, prefabricated package digestion plant for smaller-scale wastewater and sludge treatment applications.
• Activated Carbon Filter (Aktivkohlefilter) Activated carbon filtration unit used for biogas polishing and for treated wastewater streams.
• Flat Fermenter (Flachfermenter) Low-profile fermenter design suited to sites with height restrictions and specific substrate characteristics.
• CSTR Fermenter Continuously Stirred Tank Reactor fermenter for homogeneous substrates with mechanical agitation.
• Dry Fermenter AAT Anka (Trockenfermenter) Dry fermentation system designed for solid organic waste streams, sold as a complete reactor solution.
• Agitators (Rührwerke) Mechanical agitators for fermenters and process tanks, including paddle and submersible variants, supplied as components.
• Gas Storage (Gasspeicher) Biogas storage systems, including double-membrane gas holders, supplied as standalone components.
• Hygienisation (Hygienisierung) Thermal hygienisation units for the treatment of digestate and substrates to meet regulatory hygiene standards.
• Desulphurisation (Entschwefelung) Biogas desulphurisation systems for removal of hydrogen sulphide from raw biogas.
• Gravel Filter (Kiesfilter) Gravel-bed filtration unit used for effluent polishing after biological treatment.
• Condensate Trap (Kondensatschleuse) Condensate separation equipment for biogas piping, sold as a standalone component.
• Project Studies / Feasibility Studies (Projektstudien) Engineering feasibility and concept studies for prospective biogas and wastewater projects, delivered as a consulting service.
• Biological Support Service (Biologische Betreuung) Long-term biological process support for operating biogas plants, including process monitoring, optimisation, and troubleshooting, supplied as an after-sales service contract.
• Design, Planning and Construction / Commissioning Services Full engineering scope covering plant design, planning, construction, and commissioning of biogas and wastewater treatment plants on a turnkey EPC basis.

Quantifiable outcome

• 98% plant availability (8,600 full load hours/year) demonstrated across AAT-built facilities
• +3 more outcomes

Named customers11 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

Feature5 records

Partnerships

Ten partnerships are on record, tiered core and regional.

• Biogenic ApS (Denmark)coreStrategic or Co-development Partner · 30 June 2026Long-standing partnership between AAT Biogas and Biogenic ApS for the delivery and installation of biogas equipment in Scandinavia. Jointly delivered a high-performance Emergency Biogas Flare (FLR 1500) for the Hustadvika municipality biogas plant in Norway, including transport, installation, and commissioning. Biogenic serves as the local partner for AAT technology deployment in Denmark.
• Hydroflux Epco / Hydroflux Industrial (Australia/New Zealand)regionalChannel Partner/ Reseller/ DistributorRegional partner for Australia and New Zealand. Located at Level 26, 44 Market Street, 2000 Sydney/NSW. Contact: Liam Zanchetta, Phone: 1300 417 697. Handles local sales and project support for AAT biogas technology in the Australian and New Zealand markets.
• Oxien do Brasil Eireli (Brazil)regionalChannel Partner/ Reseller/ DistributorRegional partner for Brazil. Located at Rua Jaime Balão, 976, 81020-020 Curitiba, PR, Brazil. Contact: Sergio Vidoto, Phone: +55 41 99107 0999. Handles local sales and project support for AAT biogas technology in the Brazilian market.
• Skeem OÜ (Estonia)regionalChannel Partner/ Reseller/ DistributorRegional partner for Estonia. Located at Vallikraavi 20, Rakvere, Estonia. Contact: Ergi Prommik, Phone/WhatsApp: +372 5557 7770. Supports AAT project execution in the Estonian market, including the landmark Saaremaa biogas plant.
• Biogenic Norge AS (Norway/Iceland)regionalChannel Partner/ Reseller/ DistributorRegional partner for Norway and Iceland. Located at Brannstasjonsveien 8, 4312 Sandnes, Norway. Contact: Christian Nottveit, Phone: +47 98267797. Handles local sales, installation, and commissioning support for AAT biogas equipment in Norway and Iceland, including the Hustadvika flare project.
• Lorega Bio sp. z o.o. (Poland)regionalChannel Partner/ Reseller/ DistributorRegional partner for Poland. Located at Al. Ujazdowskie 51, 00-536 Warszawa, Poland. Contact: Piotr Tarnowski, Phone: +48 780021061. Supports AAT project execution in the Polish market, including the Olsztyn biogas plant project.
• UAC Trading Solution Company Ltd. (Thailand / SEA)regionalChannel Partner/ Reseller/ DistributorRegional partner for Thailand, Laos, Cambodia, Malaysia, and Indonesia. Located at 1 TP&T Tower, 19th Floor, Soi Vibhavadirangsit 19, Chatuchak, 10900 Bangkok, Thailand. Contact: Santi Lengraksa. Handles local sales and project support for AAT biogas technology across Southeast Asian markets.
• Technische Universität Wien (TU Wien) — AustriacoreStrategic or Co-development PartnerScientific research partner collaborating with AAT on biogas technology development. TU Wien works alongside AAT to advance anaerobic digestion processes and plant optimization, helping maintain AAT's position as a technology leader internationally.
• Department für Agrarbiotechnologie Tulln (IFA Tulln) — AustriacoreStrategic or Co-development PartnerScientific research partner for agricultural biotechnology applied to biogas production. Collaborates with AAT on substrate processing, fermentation optimization, and nutrient recovery from digestate, supporting AAT's R&D efforts in anaerobic digestion technology.
• SYMSITES Consortium (Horizon Europe)coreStrategic or Co-development PartnerAAT participates as an industrial partner in the SYMSITES Horizon Europe project (June 2022 – May 2026, budget €12,404,455) focused on Industrial and Urban Symbiosis (I-US) for circular economy. AAT built a pilot-scale hydraulic digester (2.8 m³ capacity) for the Austrian Ecosite testing novel wastewater valorization technologies. Testing sites span Denmark, Austria, Spain, and Greece.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Wärtsilä: Wärtsilä is a Finnish power-systems OEM with a dedicated biogas and biomethane liquefaction business offering plant and engine packages. It is a broader incumbent competing with AAT when customers bundle engines, liquefaction, or grid-scale power with AD plant delivery.
• Hitachi Zosen Inova (HZI): HZI is a large Swiss-Japanese EPC for waste-to-energy, including anaerobic digestion and biogas upgrading via its Schmack Biogas heritage. It is a broader incumbent competing with AAT on larger municipal and industrial AD tenders where scale and balance sheet matter.

Direct peers

• IES Biogas: IES Biogas is an Italian engineering and EPC firm focused on agricultural and industrial biogas plants with strong Southern and Eastern European presence. It competes directly with AAT in food waste, livestock, and energy-crop AD projects.
• PlanET Biogas Group: PlanET is a German-Canadian turnkey biogas plant builder with proprietary digester and upgrading technology. It is a direct competitor to AAT in agricultural, food-waste, and industrial AD plant engineering and component supply.
• BioConstruct GmbH: BioConstruct is a German full-scope biogas plant EPC with proprietary digester and gas-treatment technology. It overlaps directly with AAT across agricultural, industrial, and municipal AD project scopes and competes on similar customer segments in DACH.
• Agraferm Technologies AG: Agraferm Technologies is a German manufacturer of anaerobic digestion plants and biogas technology, including fermenters and gas upgrading. It is a direct peer in the European agricultural and industrial AD equipment market.
• EnviTec Biogas AG: EnviTec Biogas AG is a German full-service biogas EPC and operator with a comparable offering in plant design, component manufacturing, and biological service. It directly competes with AAT in European agricultural, industrial, and municipal biogas projects.
• DMT Environmental Technology: DMT Environmental Technology designs and supplies biogas upgrading, desulfurization, and gas treatment systems across Europe. It is a direct peer in the gas-treatment component segment that AAT addresses with its activated carbon filters and desulphurization units.
• Xergi: Xergi is a Danish EPC and technology provider for biogas plants and biomethane upgrading, with comparable substrate-flexibility claims and full-lifecycle service offerings. It is a direct competitor in Northern Europe and export markets where AAT is also active.
• Bright Renewables (formerly HoSt): Bright Renewables is a Dutch EPC and equipment supplier specializing in anaerobic digestion, biogas upgrading, and renewable gas plants. It competes head-to-head with AAT on mid- to large-scale AD projects and component supply across Europe and beyond.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/aat-biogas-technology

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 AAT Abwasser