The municipalities of Melun and Vaux-le-Pénil, located in Seine-et-Marne, are continuing the development of their low-carbon heating network. A new agreement provides for the extension of 17 kilometres of the current network, bringing the total length to over 43 kilometres. The installation of 115 additional substations will provide an extra 68 GWh of heat, meeting the heating and hot water needs of 18,500 housing equivalents.
A reinforced geothermal network
The infrastructure is based on a system combining geothermal energy and heat pumps to maximise energy efficiency. This development follows on from the network established in Melun since 1969, one of the first to use this technology for urban heat production.
Reduction of emissions and energy impact
The expansion of the network will prevent an additional 12,000 tonnes of CO₂ per year, adding to the 16,000 tonnes already saved thanks to existing infrastructure. In total, 28,000 tonnes of CO₂ per year will be avoided with the entire system, consolidating the integration of renewable energy into the heat supply for both municipalities.
Investment and project timeline
The entire operation, including the drilling of the new well and the modernisation of the network, represents an investment of nearly €75 million. The schedule plans for work to begin this year, with a phased commissioning starting in 2026.
