Planning, construction and service of biogas and biomethane plants made of stainless steel for organic residual materials worldwide.
WELTEC BIOPOWER GmbH
Vechta (headquarters)New on Amplifa
About WELTEC BIOPOWER
WELTEC BIOPOWER GmbH is a plant manufacturer founded in 2001 and based in Vechta, specialising in biogas and biomethane plants. The company covers the entire value chain: from consulting, plant conception and permitting planning under BImSchG and WHG, through EPC solutions with procurement, construction and commissioning, to training, maintenance and repowering. The plants are predominantly made of stainless steel and digest more than 400 proven substrates – from slurry, manure and energy crops to biowaste, food residues and sewage sludge, up to industrial residuals such as brewers' grains, stillage and glycerine. The biogas produced is converted into electricity in a CHP unit or upgraded to biomethane of natural gas quality; with WELTEC BLUE WATER the company also offers a digestate treatment and nutrient separation plant, and with WELTEC CONTROL a web-based plant control software. More than 400 realised projects in 27 countries on five continents demonstrate the international orientation; customers come from agriculture, industry, waste and wastewater management as well as from the investor community.
- Site
- Vechta
- Processes
- Planning & engineering of biogas/biomethane plants, Plant construction & commissioning of biogas plants (EPC), Substrate preparation and feeding into stainless steel tank, Anaerobic digestion in the digester (biogas process), Biogas upgrading to biomethane (natural gas quality) incl. CO₂ extraction, WELTEC BLUE WATER – nutrient management & digestate treatment (separation into solid and liquid, WELTEC CONTROL – web-based plant control and monitoring software, Permitting planning (BImSchG, WHG, submission drawings, authority coordination)
- Materials
- Stainless steel, Cattle slurry, Pig manure, Poultry manure / dried poultry manure, Maize silage, Whole crop silage, Sugar beet / sugar beet pulp, Cereals
- Certificates
- Quality and environmental management system, Energy management (certified), RED II certification (Könnern biomethane park), Certified energy management, ISO 9001
- Founded
- 2001
- Employees
- 70
- Industries
- Agriculture, Industry (food, brewing, whisky), Waste management, Wastewater management/municipalities, Investors
- 01
Consulting & substrate analysis
- 02
Plant conception & profitability calculation
- 03
Permitting planning (BImSchG, WHG)
- 04
EPC: procurement & plant construction
- 05
Commissioning & training
- 06
Service, maintenance & repowering
Materials & Processes
Stainless steel
Consistent use of stainless steel technology for digesters, pre-digester and digestate tanks guarantees flexible substrate feeding, fast assembly and high quality standards regardless of location.
Cattle slurry
Classic biogas feedstock for agricultural plants, with simultaneous recovery of nutrient-rich digestate as fertiliser.
Cattle manure / pig manure
Solid manures are prepared and continuously fed into the stainless steel digester.
Poultry manure / dried poultry manure
Poultry manure is successfully used on an industrial scale as a substrate in biomethane plants.
Renewable raw material silages (maize, whole crop, grass, cereals)
Energy crops with high gas yields for plannable returns and additional agricultural value creation.
Biowaste, food residues & food waste
Organic waste from municipalities, gastronomy and industry is digested into biogas and high-quality digestate.
Sewage sludge
Digester tower optimisation, co-digestion and sewage gas plants for municipal and industrial wastewater operators.
Brewers' grains, stillage & glycerine
Industrial production residues from brewing and whisky production as energy sources for biogas plants.
Locations
Vechta
DEHeadquarters with planning, engineering and sales
- Materials
- Stainless steel
- WELTEC BLUE WATER digestate treatment
- WELTEC CONTROL plant software
- Substrate database with more than 400 substrates
Plants & Reference Projects
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning & engineering of biogas/biomethane plantsEngineering | – | – | – | – | Stainless steel |
| Plant construction & commissioning of biogas plants (EPC)Assembly | – | – | – | – | Stainless steel |
| Substrate preparation and feeding into stainless steel tankEngineering | – | – | – | – | Stainless steel |
| Anaerobic digestion in the digester (biogas process)Engineering | – | – | – | – | Stainless steel |
| Biogas upgrading to biomethane (natural gas quality) incl. CO₂ extractionEngineering | – | – | – | – | – |
| WELTEC BLUE WATER – nutrient management & digestate treatment (separation into solid and liquidEngineering | – | – | economical from 50,000 tonnes/year | – | Slurry, Digestate |
| WELTEC CONTROL – web-based plant control and monitoring softwareEngineering | – | – | – | – | – |
| Permitting planning (BImSchG, WHG, submission drawings, authority coordination)Engineering | – | – | – | – | – |
| Service & maintenance of biogas plants (manufacturer-independent): refurbishment, modernisation,Assembly | – | – | – | – | – |
| CHP service & operations management (all engine types, engine overhauls, remote monitoring)Assembly | – | – | – | – | – |
| Mechanical service (maintenance, repair, restoration of mechanical components)Assembly | – | – | – | – | – |
| Inspection management (recurring inspections in accordance with AwSV, BetrSichV, BImSchG, WHG,Testing | – | – | – | – | – |
| Biological service (substrate analyses, digestion trials, laboratory analyses, process optimisation)Testing | – | – | – | – | – |
| Profitability calculation and business models (electricity, heat, biomethane, direct powerEngineering | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Biogas digester (stainless steel) | WELTEC BIOPOWER | – | e.g. 4,900 m³, 6,850 m³, 5,579 m³ per tank (reference plants) | – | worldwide |
| Pre-digester tank (stainless steel) | WELTEC BIOPOWER | – | e.g. 393 m³ (Ø 9.98 m, H 5.03 m), 500 m³, 1,543 m³ | – | worldwide |
| Digestate storage / post-digester tank | WELTEC BIOPOWER | – | e.g. 524 m³, 3,500 m³ | – | worldwide |
| CHP (combined heat and power unit) | – | – | e.g. 750 kW electrical (Finland) | – | worldwide |
| WELTEC BLUE WATER slurry and digestate treatment plant | WELTEC BIOPOWER WELTEC BLUE WATER | – | economical from 50,000 t/year | Einführung | – |
| Container pump system and heating/boiler container | WELTEC BIOPOWER | – | – | 2025 | USA (Wisconsin) |
| Food depackaging plant | – | – | – | – | UK |
Additional services
Quality & Management Systems
WELTEC BIOPOWER operates a quality and environmental management system whose effectiveness is continuously reviewed and improved. Energy management is certified; the company's own plants are inspected and documented in accordance with AwSV, BetrSichV, BImSchG and WHG.
| Evidence | Vechta |
|---|---|
| Quality and environmental management system | |
| Certified energy management | |
| RED II certification (Könnern biomethane park) | |
| ISO 9001 |
History
- 2001
Foundation of WELTEC BIOPOWER
- 2009
Commissioning of the Könnern biomethane park (3600 Nm³/h biogas), one of the largest plants of this kind worldwide
- 2013
Commissioning of the Arneburg biomethane plant (1650 Nm³/h) and a plant for organic waste in Finland
- 2016
Product launch of the WELTEC BLUE WATER slurry and digestate treatment
- 2017
Biogas plant in Uruguay with over 6 MW of heat output; two ADBA Awards and a top-5 placement in the Lower Saxony Foreign Trade Award
- 2018
Takeover of two plants in Südergellersen and Wollup; in-house operation grows to nine locations
- 2019
Major orders in England and France
- 2020
Orders from Japan, South Korea, Finland, Greece, France and Germany; RED II certification of the Könnern biomethane park
- 2021
20th anniversary; establishment of a EUR 100 million investment fund with the acquisition of four plants
- 2022
First two industrial biogas plants in Japan; first order from Taiwan
- 2023
Three new biogas projects in Greece, a major project in the USA and the first WELTEC BLUE WATER plant in Germany