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Public sector and municipalities

Bettembourg

Bettembourg

Since 1995, LuxEnergie has been supplying heat to Bettembourg’s heat network, i.e. a total of twelve buildings, such as the town hall, the primary school, the sports centre, the swimming pool and several residential homes. During the first 20 years, the heat was produced in a cogeneration plant powered by natural gas. At the end of the contract, a variant analysis was carried out and, taking into account ecological and economic criteria, it was decided to build a new biomass energy plant.

The new energy plant was commissioned in 2018 and comprises two wood gasification CHPs and two wood pellet boilers. The two boilers supply the base and medium load and enable the use of the natural gas peak load boilers to be reduced to a minimum. Thus, approx. 85% of the annual heat energy can be covered by the renewable fuel wood pellets. The electricity produced is fed into the public grid. The total CO2 savings compared to the heat supply from the previous natural gas-fired plant is approx. 1,600 tons per year.

Key figures

Commissioning / conversion:1995 / 2018
Heat production:before conversion:9.700 MWh/a (fossil)
after conversion:9.000 MWh/a (regenerative)
700 MWh/a (fossil)
Power production:before conversion:3.000 MWh/a (fossil)
after conversion:2.300 MWh/a (regenerative)
Heat network:1,45 km
Use:Local heat / electricity

Energy Plant

Before conversion

2 boilers with dual fuel burners
Primary energy: natural gas and heating oil

2 CHP modules
Primary energy: natural gas

After conversion

2 wood gasifiers
Primary energy: wood pellets

2 CHP modules
Primary energy: wood gas

2 boilers
Primary energy: wood pellets

2 boilers with dual fuel burners
Primary energy: natural gas and heating oil