The result of the longstanding partnership between the City of Levallois and Idex, this project embodies a resilient local energy model built on two complementary local resources:
A new geothermal plant, which will harness the heat from an aquifer at 60°C, drawn from several hundred metres beneath the Louison Bobet stadium, to produce 90 GWh per year;
A waste heat recovery system from the Global Switch data centre, valorising nearly 28 GWh of energy that had previously gone unused.
Together, these two sources will supply the city's Kalita district heating network with over 120 GWh per year, raising the share of renewable and recovered energy to more than 75% an unprecedented rate for such a densely populated urban area.
Immediate benefits for residents and public finances
Beyond its environmental impact, the project delivers tangible economic benefits for district heating subscribers:
- A progressive reduction in the average cost of heat of up to 30% once fully operational;
- Long-term cost stability, thanks to the use of local resources unaffected by fluctuations in international energy markets;
- Estimated operating savings of 650,000 per year for the city's public buildings, thereby strengthening the financial sustainability of municipal finances.
