Pau's Heating Network, France

The city of Pau has entrusted Pau Béarn Pyrénées Energies Services, a subsidiary of Engie Solutions and Banque des Territoires, with the design, development and operation of a district heating network comprising 174 substations in a grid spanning the city of Pau. Eventually, 75% of this heating network will be supplied by waste and wood.

Key figures of the project:

  • 45 km of network
  • 200 buildings connected
  • 76% of heating needs met through local and renewable energy
  • 24,000 metric ton reduction in CO2 per year
  • €60M investment with financial support from Ademe, the Regional Council of Nouvelle-Aquitaine and the European Union with the European Regional Development Fund

Why Distech Controls technology?

For this type of installation, Distech Controls offers a comprehensive substation package that is fully integrated into and compatible with the COFELY VISION management system — a Big Data monitoring application for optimizing maintenance.

The Distech Controls solution has a major advantage: local communication between the digital tool (tablet) used by the maintenance technician and the ECLYPSE controllers, all through a connected Wi-Fi antenna. This means consistent information that can be accessed quickly!

The connected ECLYPSE controller for HVAC equipment (ECY-303) was a deciding factor for the installer: a compact multi-protocol controller with integrated BACnet/IP, Modbus/IP and Modbus RS485, all connected through a 4G modem and secure VPN loop.

Solutions fitted:

174 sub-stations, equipped by Distech Controls with the following:

  • 1 connected ECLYPSE controller – ECY-303-M6 
  • 1 Wi-Fi ECLYPSE antenna
  • 2 immersion temperature sensors
  • 1 lightning arrester
  • 1 4G modem

Everything is integrated in a compact electrical cabinet installed on a skid made by our Italian partner AMARC.


  • Principal contractor: ENGIE Solutions – Pau Béarn Pyrénées énergies Services – EGIS.
  • Maintenance: ENGIE Solutions – Pau Béarn Pyrénées Energies Services
  • Project management: EGIS
  • Installation: multiple local subcontractors: Inter Energies, Poumirau, SLTE Sasu, IMDC, Equans Inéo.
Previous Article
Court of Law, Bordeaux, France
Court of Law, Bordeaux, France

The Tribunal Judiciaire de Bordeaux (court of law) was renovated in 2018.

Next Article
Réseau de chaleur de Pau
Réseau de chaleur de Pau

Pau Béarn Pyrénées Energies Services a assuré la conception, la réalisation et l’exploitation d’un réseau d...