City of Narbonne (France) heating network

Heat customer introduction


  • City of Narbonne heating network, managed by the Société Narbonnaise de Chauffage (a subsidiary of Dalkia) as part of a public service delegation
  • Network supplying social housing, buildings of Narbonne city, etc


The principle of solar thermal integration


  • Network heating via end-of-network integration
  • Fossil fuel saved: Gas


Key innovation 

  • Installation monitored in summer from the solar thermal plant installed at the end of the network branch
  • Pooling of the storage tank to improve the biomass boiler operation in winter


Project funded by


Project key figures

June 2020

work initiation target date

2,900 m²

solar thermal collector area on trackers

1,000 m³

hot water storage volume

about 2,200 MWH

expected annual production

600 tonnes

of CO2 emission avoided per year

District heating networks, Project