
Planning and construction of biogas plants, CHP service, district heating, electrical engineering and photovoltaics from Friesoythe
bwe Energiesysteme GmbH & Co. KG
Zeppelinring 12–16 · 26169 Friesoythe · DENew on Amplifa
The Company
bwe Energiesysteme is a medium-sized company from the Oldenburg Münsterland region based in Friesoythe (Lower Saxony). Founded in 2000 as a specialist in biogas plants, the company plans and builds renewable energy generation facilities with around 100 employees, including 75–150 kW farm power plants, large-scale plants and waste plants for the fermentation of organic residual materials. As a general contractor, bwe offers turnkey projects from design and approval planning through welding work in stainless steel and black steel, control cabinet construction and pre-assembly of technology containers to on-site installation, commissioning and service. In addition to plant construction, the range of services includes CHP service (manufacturer-independent), biomethane upgrading, local and district heating, transfer stations, heating system construction, heat pumps, photovoltaics, automation and a 24-hour emergency service. Customers come from agriculture, agribusiness and the food industry, slaughterhouses, waste management, industry and municipalities; reference projects have also been implemented in the United Kingdom.
- Site
- Friesoythe
- Processes
- Welding work in stainless steel (welding workshop, bwe components and custom elements), Welding work in black steel (welding workshop, bwe components and custom elements), Control cabinet construction (small distribution boards, marshalling cabinets, emergency power, Pre-assembly / conversion of sea containers into technology containers, Biogas plant construction (farm power plant 75|99|150 kW, turnkey), Planning and approval planning (design, approval and execution planning, 3D drawing), CHP service (maintenance, repair, repowering, installation), Digestate processing (separators, digestate dryers, digestate evaporators, belt dryers)
- Materials
- Stainless steel, Black steel, Concrete
- Certificates
- WHG certificate, TÜV certificates, ISO 9001
- Founded
- 2000
- Employees
- ~100
- Industries
- Agriculture, Agribusiness and food industry, Slaughterhouses, Waste management, Industry (heat supply), Municipalities / heating networks
- 01
Planning and approval planning (3D)
- 02
Procurement and warehousing of components
- 03
Stainless steel / black steel welding workshop
- 04
Control cabinet construction
- 05
Pre-assembly / conversion of sea containers into technology containers
- 06
On-site installation and commissioning
- 07
Service, maintenance and remote monitoring
Materials & Processes
Stainless steel
Welding work in the in-house workshop for bwe components and custom elements, e.g. separator screen drums.
Black steel
Welding work in the in-house workshop for plant components and custom elements.
Concrete
Concrete tanks for fermenters and digestate storage with emission or supported-air roofs.
Location

Friesoythe
DEHead office: administration, planning, welding workshops, control cabinet construction, pre-assembly, warehouse, PV
- Materials
- Stainless steel, black steel
- Stainless steel welding workshop
- Black steel welding workshop
- Pre-assembly hall (sea containers into technology containers)
- Control cabinet construction hall
- Electrical hall
- PV hall
- Biogas warehouse
- Control room / remote maintenance
Components & Plants



Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Welding work in stainless steel (welding workshop, bwe components and custom elements)Joining | – | – | – | – | Stainless steel |
| Welding work in black steel (welding workshop, bwe components and custom elements)Joining | – | – | – | – | Black steel |
| Control cabinet construction (small distribution boards, marshalling cabinets, emergency powerAssembly | – | – | – | – | Stainless steel, Steel |
| Pre-assembly / conversion of sea containers into technology containersAssembly | – | – | – | – | – |
| Biogas plant construction (farm power plant 75|99|150 kW, turnkey)Engineering | – | – | – | – | – |
| Planning and approval planning (design, approval and execution planning, 3D drawing)Engineering | – | – | – | – | – |
| CHP service (maintenance, repair, repowering, installation)Engineering | – | – | – | – | – |
| Digestate processing (separators, digestate dryers, digestate evaporators, belt dryers)Engineering | – | – | – | – | – |
| Digestate storage construction (emission roof, supported-air roof structure with gas storage,Engineering | – | – | – | – | Concrete |
| Gas upgrading to biomethane (membrane technology, pressure swing adsorption, pressure waterEngineering | – | – | – | – | – |
| Piping constructionJoining | – | – | – | – | – |
| Heating construction / district and local heating networks / transfer stations (planning,Assembly | – | – | – | – | – |
| Electrical installation, electrical engineering, medium-voltage systems, remote control technology,Assembly | – | – | – | – | – |
| Photovoltaic installation (10 kWp to 750 kWp and above, rooftop and ground-mounted)Assembly | – | – | – | – | – |
| Heat pump installation (NIBE)Assembly | – | – | – | – | – |
| Sewage sludge drying (drying and pelletizing to 90 percent dry matter content,Engineering | – | – | – | – | – |
| Waste plants (biogas plant operation with organic waste, substrate separation, pasteurization)Engineering | – | – | – | – | – |
| Overpressure protection (own prototype, maintenance-free, heated)Engineering | – | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Stainless steel welding workshop | – | 1 | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Black steel welding workshop | – | 1 | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Pre-assembly hall (conversion of sea containers into technology containers) | – | 1 | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Control cabinet construction hall | – | 1 | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Mobile heating center (oil/gas operation, up to 600 kW, 1000-liter oil tank) | – | – | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Mobile gas flare (max. 500 m³/h, DN 80 to DN 200) | – | – | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Mobile press screw separator (cast iron housing, screen drum V2A 0.5 mm slot width, 5–15 m³/h) | – | – | – | – | Zeppelinring 12-16, 26169 Friesoythe |
| Dorset digestate drying plant | Dorset | 1 | 500 kW th | 2014 | Customer site Bösel |
Additional services
Reference customers
Quality
Quality is ensured through regular employee training and continuing education, cooperation with universities, and recognized certifications (including WHG certificate, TÜV certificates). Before acceptance, experts inspect the plants and documentation.
| Evidence | Friesoythe |
|---|---|
| WHG certificate | |
| TÜV certificates | |
| ISO 9001 |
History
- 2000
Founded as a specialist in biogas plants
- 2001
Start of construction of 75–150 kW farm power plants; more than 100 plants built since then
- 2006
Heinfelde operator consortium: two bwe biogas plants commissioned
- 2007/2008
Construction of the Felgentreu biogas park (10 plants, 8.44 MW el)
- 2015
bwe biogas plant in West London awarded best waste treatment project by UK AD & Biogas (also in 2016)