Already in 1998 the idea to build a collective biogas plant came up in the region of Redange. In 2000, 29 farmers have joined in a cooperative and assigned L.E.E. s.à r.l. for the whole project development including the engineering services.

The following advantages were reached by the biogas plant:

  • Production of renewable energies by using locally available biomass and creation of local added value
  • Reduction of the mineral fertilizer needs
  • Possibility to integrate a closed nutrient cycle
  • Improvement of the liquid manure concerning the effect of fertilizer and the sanitary status
  • Reduction of the nitrate concentration in the drinking water thanks to an adapted material flow managment
  • Climate protection

Project Redange - Construction phase - Biogas plant with district heating

A local heat network supplies a public swimming pool, a high school, a sports hall and a supermarket with thermal energy from the biogas plant. On balance 700.000 liters of fuel can be substituted with the biogas plant.

Thanks to an adapted material flow management and an optimal organic fertilizer quality, the biogas plant contributes actively to the protection of drinking-water and the whole environment.


Basic information Name of the legal entity: L.E.E. SÀRL
Country: Luxembourg
Project value (EUR): 6.000.000,-
Staff provided: 6
Client: Biogas un der Atert S.C.
Origin of fundings: private
Dates (start-end): 2000 - 2006
Input biogas plant Organic waste:
32.600 tons/year (liquid manure, solid manure)
Energy crops:
15.000 tons/year (corn, maize, grass, sunflowers)
Organic waste:
5.000 tons/year (greenery waste, agro-industrial waste)
Technical Data
Technology employed: Biogas (anaerobic digestion)
Total reactor volume: 9.600 m³
Technical Data
biogas plant
Biogas production: 4.500.000 m³/year
Installed electrical capacity: CHP: 1,7 MWel. (5 different units)
Annual production of electricity: 11.000.000 kWhel/year
Installed thermal capacity: CHP: 1,8 MWtherm
Fuel and biogas burner: (peak-production) 1.000 kWtherm
Annual production of heat: 12.000.000 kWhtherm/year
Process heat consumption: 2.900.000 kWhtherm/year
xternal use district heating: 6.000.000 kWhtherm/year
Length of the district heating: 1.200 m
Services provided

Project Planning:

Feasibility study
Mass and energy balance
Authorisation procedures
Call of tender
Engineering design: Basic engineering
Detailed engineering
Financial engineering
Project implementation: Supervision of construction
Start-up of the process
Operation over a period of 4,5 years