District heating in this Val-d'Oise agglomeration takes stock

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Take stock of the first five years of the public service delegation of the district heating entrusted to Coriance.

This was the purpose of the meeting orchestrated recently at the Cergy-Pontoise town hall (Val-d'Oise) in the presence of around forty subscribers of the heating network of the former New Town.

At the time of assessment

A network which supplies numerous facilities and businesses as well as 33,000 homes spread across the municipalities of Cergy, Eragny-sur-Oise, Saint-Ouen-l'Aumône and Pontoise.

In the fall of 2019, the company CenergY, a subsidiary of the Coriance Group, was designated by the Cergy-Pontoise urban community as the new delegatee to ensure the management, until 2039, of the heat production and distribution service . With one objective in mind: the renovation of the distribution network.*

111 million euros invested

“To guarantee the continuity of this public service, CenergY is investing 111 million euros, including 51 million euros of initial work, in the renovation and modernization of the entire network, while continuing to improve its performance environmental”, reports the Cergypontaine agglomeration.

Most of this reliability work was carried out between 2020 and 2024.

On the menu: reliability of the biomass plant and addition of two gas boilers on the Bellevues site, creation of a gas heat production plant on the Ax-Majeur Horloge site, addition of a gas boiler on the Linandes site, completion of the transition to low pressure regime of the 40 km of network, thus making it possible to limit heat losses, creation of a new network mesh in Cergy, replacement and renovation of 42 valves in the network in order to limit service disruptions in the event of a leak and guarantee the distribution of heat to subscribers and users. Over the duration of the contract, the delegatee will have replaced 60% of the pipes, or 30 km of the 57 km of existing network.

During this meeting, a focus was placed on district heating prices.

“Several price comparisons show that district heating is very competitive compared to other heating methods (see Amorce), underlines the Cergypontaine agglomeration. Users benefit from a VAT rate reduced to 5.5% on their heating bill thanks to the environmental performance of the network. Furthermore, its price is stable over time since it is little linked to fluctuations in the prices of fossil fuels thanks to the share of renewable energies in the contractual energy mix, serving as a basis for invoicing. In addition, maintenance costs for the public part of the network as well as an emergency intervention service available 24/7 are provided by the delegatee. »

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