Production of Bio-CNG, biomethane, electricity, heat and digestate fertilizer from renewable resources

Biogas Wetscher Bruch GmbH & Co. KG

49453 Wetschen (DE)New on Amplifa

2006Immission control permit for the biogas plant

GmbH & Co. KGLegal form

> 100 Mio. kWh Gas / Jahr; > 15 Mio.Annual capacity

ca. 63.176 m³ Biogas (ca. 82.129 kg)Plant volume

> 200Customers

> 60 Tsd. t CO₂-Einsparung / JahrCarbon footprint

About Biogas Wetscher Bruch

Biogas Wetscher Bruch GmbH & Co. KG operates a biogas plant in Wetschen (Lower Saxony) that produces biogas from renewable resources and farm manures. From the biogas, green CNG gas / biomethane is produced for fleet operators, electricity and gas for private customers, as well as CO₂ certificates for customers. Over 100 Mio. kWh of gas and over 15 Mio. kWh of electricity are produced per year; around 60 Tsd. tonnes of CO₂ are saved annually. In addition to energy production, the fermented digestate is provided as a nutrient-rich fertilizer for commercial and private customers; the company also takes delivery of manure and farm manures and supplies external heat consumers. The plant is classified as an upper-class establishment under the Major Accidents Ordinance (12. BImSchV) and received its immission control permit in 2006. More than 200 customers purchase the company's products.

Site: Wetschen
Processes: Production of green CNG gas/biomethane, Electricity and gas supply for private customers, Digestate fertilizer for commercial and private customers, Acceptance of manure/farm manures, CO₂ certificates for customers, Heat supply for external consumers
Materials: Renewable resources, Farm manures (manure), Biogas (methane, CO₂, H₂S, NH₃), Digestate fertilizer
Certificates: SURE-EU (RED II sustainability), REDcert-EU, REDcert-EU inspection certificate (Scope 104 group of points of origin), SURE-EU (RED II sustainability, SURE-EU/DE-010/Z38432501), REDcert-EU (EU-REDcert-504-38432501), REDcert-EU inspection certificate (Scope 104, EU-REDcert-504-38432502)
Industries: Transport/fleet operators (CNG), Private households (electricity & gas), Agriculture, Commercial customers

01
Storage of biomass (silages, farm manures)
02
Removal and addition into the fermentation process
03
Material flow management via solid matter dosing units, pumps and conveying
04
Production of biogas in the gas-tight fermentation system
05
Intermediate storage of the biogas in the gas storage system
06
Power generation in combined heat and power units
07
Heat utilization for digester heating and supply of external consumers
08
Upgrading to Bio-CNG/biomethane
09
Intermediate storage and delivery of the fermented digestate as fertilizer

Input materials and processes

NawaRo

Renewable resources

Input materials in the fermentation process for biogas production.

WaD

Farm manures (manure)

Agricultural waste is taken in and used as substrate for biogas production.

Biogas

Biogas (methane, CO₂, H₂S, NH₃)

Intermediate product from the gas-tight fermentation system, the basis for CNG, electricity and heat.

Gärrest

Digestate fertilizer

Fermented residual material as a nutrient-rich fertilizer for agriculture, commerce and private customers.

Site

Wetschen

Biogas plant and upper-class establishment (12. BImSchV)

Part weight / size: ca. 63.176 m³ biogas / ca. 82.129 kg gas storage volume
Materials: Renewable resources, farm manures, biogas, digestate

gas-tight fermentation system with gas storage
combined heat and power units (biogas power generation)
digesters/secondary digesters with heat heating
2 digestate storage tanks (storage 8 and 9)
solid matter dosing units, pumps and conveying units
automated manure recovery system

Products

**Green CNG gas**Biogas upgrading · Transport/fleet operators

**Electricity & gas**Biogas power generation · Private households

**Digestate fertilizer**Fermentation · Agriculture

Inside the production

Managing Director Ludger Themann at the biogas plant

Industries

Transport/fleet operators (CNG)Private households (electricity & gas)AgricultureCommercial customers

6 Anlagen & Maschinen

Machine	Manufacturer / model	Quantity	Working area	Year built	Site
Biogas plant (gas-tight fermentation system with gas storage)	–	1	ca. 63.176 m³ biogas / ca. 82.129 kg gas storage volume	–	Wetschen
Combined heat and power unit (biogas power generation)	–	–	> 15 Mio. kWh Strom / Jahr	–	Wetschen
Digester / secondary digester with heat heating	–	–	–	–	Wetschen
Digestate storage tank	–	2	Storage 8 (BE 3.11) and Storage 9 (BE 3.12)	–	Wetschen
Solid matter dosing units, pumps and conveying units	–	–	–	–	Wetschen
Manure recovery system (automated)	–	–	–	–	Wetschen

Additional services

Production of green CNG gas/biomethaneElectricity and gas supply for private customersDigestate fertilizer for commercial and private customersAcceptance of manure/farm manuresCO₂ certificates for customersHeat supply for external consumers

Reference customers

More than 200 customers (not named)

Sustainability and quality certification

The sustainability of the biogas and biomethane production is demonstrated through SURE-EU and REDcert-EU certification under the Renewable Energy Directive (EU) 2018/2001 by GUT Certifizierungsgesellschaft mbH. The plant is continuously monitored by suitable measuring, control and regulation technology.

Evidence	Wetschen
SURE-EU (RED II sustainability, SURE-EU/DE-010/Z38432501)
REDcert-EU (EU-REDcert-504-38432501)
REDcert-EU inspection certificate (Scope 104, EU-REDcert-504-38432502)

History

2006
Immission control permit for the biogas plant on 16.03.2006 (AZ 118/H000003548/1.4b).
2025
Renewal of the SURE-EU and REDcert-EU certificates following the audit on 09.04.2025; classification as an upper-class establishment under the 12. BImSchV as a result of the expanded digestate storage (storage 8 and 9).