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A green heating network central to the circular economy

The challenge Dalkia solution Key figures Clients benefits Feedbacks Dalkia contact

The household waste authority for the Pyrénées Orientales department (Sydetom 66) teamed up with Dalkia and Dalkia Wastenergy to design, build and operate a heating network connection between the Calce waste-to-energy plant to Perpignan. The project received funding from the French environment and energy management agency (ADEME) and the Occitanie region.


The challenge

Sydetom 66 and Perpignan Méditerranée Métropole were seeking a sustainable development solution for the city and surrounding region. The goal was to help the local authority combat global warming by promoting the use of green energy and curbing its greenhouse case emissions.


The Dalkia solution

Dalkia and its subsidiary Dalkia Wastenergy devised a solution to harness the energy from municipal waste to supply heat to schools, hospitals and industry in the Perpignan region.

  • The TIRU-operated waste-to-energy plant in Calce, about 10 km from Perpignan, processes 240,000 tonnes of waste a year. The resulting energy provides hot water at a temperature of over 100°C, which can be fed into the heating network.
  • Sydetom 66 is laying the 11 km of pipes to carry the heat between the Calce facility and the city of Perpignan, through the municipalities of Calce, Bachas, Baho, Villeneuve-la-Rivière and Saint-Estève, where the high-temperature heat will pass through the Torremila substation.
  • In Perpignan, the heat will be distributed through the network built and operated by Dalkia to supply buildings including the Cémoi chocolate factory, Clinique Mutualiste Catalane, Hélène Boucher school, Léon Blum school, Arlette Franco swimming pool, and Perpignan hospital. An absorption chiller system will be installed at the hospital will to provide renewable cooling. All facilities will be connected to the Dalkia Energy Savings Center (DESC).


tonnes of residual household and industrial waste turned into a resource every year


renewable and recovered energy sources in the energy mix


tonnes of CO2 avoided, equivalent to taking nearly 2,000 cars off the road

15 km

of network, including 11 km for transport and 4 km for distribution


Harnessing the heat given off when burning waste provides renewable energy to replace fossil fuels, which significantly curbs CO2 emissions.

Renewable and recovered energy sources represent 90% of the heating network mix.


In addition to enhancing the waste authority's current operations and making them more viable in the long term, this major project will allow us to produce clean energy, which is more important than ever to safeguard people's well-being and the future of our planet

Fernand Roig

Sydetom 66 chairman

Contact your regional representative
Pierre Vandekerckhove