#Aerothermal - Geothermal

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Pavillon BÂTIMENT DURABLE (Hall B1)
Dec 9, 2026
11:00 AM11:20 AM
#Aerothermal - GeothermalCleantech - DecarbonationEngineeing - R_DGreen Buildings

CONCRETE SOLUTIONS FOR SUSTAINABLE BUILDINGS

Description
From construction to refurbishment, including global performance contracts, Spie batignolles supports the transformation of buildings to meet the challenges of sustainability. This pitch will highlight the solutions implemented to design sustainable buildings, combining user comfort, energy performance, and the use of renewable materials.
Salle EOLE (Hall B3)
Dec 9, 2026
3:30 PM4:30 PM
#Aerothermal - Geothermal#Thermal solar#Biomass - Wood energy - BiogasLocal authorityGreen Buildings

HEAT NETWORKS TO SCALE UP DECARBONIZATION IN HOUSING

Apolline FAUREStéphane BAUMONTFrederik THUREGaëtan DAUJEAN
Description
District heating networks powered by renewable and recovered energy are among the most powerful tools for rapidly decarbonizing the building sector. Nordic models have demonstrated this for several decades: when well-planned, supported, and connected on a large scale, these networks enable a massive shift away from fossil fuels. In France, the potential remains considerable but is still underutilized. The Multi-Year Energy Plan (PPE3) sets an ambitious goal: to triple the number of district heating networks. This requires a genuine shift in scale: accelerating projects, securing business models, mobilizing local governments, connecting more multi-unit housing, and making better use of local resources. This roundtable will compare European experiences with French realities to identify persistent barriers to deployment: financing, public acceptance, regional engineering, building connections, availability of renewable heat, and local governance. Above all, it will examine the conditions needed to make district heating networks a central tool for the widespread decarbonization of housing. How can the threefold increase announced by the PPE3 be transformed into a truly operational pathway? What role should local governments play in local energy planning? A roundtable discussion moderated by Aude Ricard, journalist
Salle EOLE (Hall B3)
Dec 10, 2026
3:30 PM4:30 PM
#Aerothermal - GeothermalLocal authorityGreen Buildings

GEOTHERMAL ENERGY: A RENEWABLE RESOURCE FOR COOLING OUR CITIES—STILL UNDERUTILIZED?

Rémi BEAULIEURémi DELPRATFrederick CAUVINSimon BAILLY
Description
Long limited to heating, geothermal energy is revealing a second facet. In the face of heat waves that last from May through September, it can also produce renewable cooling. Geocooling harnesses the stable temperature of the subsurface (8–16°C) to cool buildings and neighborhoods. Unlike conventional air conditioning, it produces no consumption spikes and does not exacerbate the urban heat island effect. Regulatory momentum is building: the “Endurance” plan, reduced VAT on cooling networks, and a requirement for cities with more than 45,000 residents to integrate heating and cooling into their local strategies. Initial feedback is available, but three obstacles appear to persist: a lack of understanding of the resource, the cost of drilling, and a lack of local support. Barely 3,000 geothermal heat pumps were sold in 2024, compared to nearly one million air-source heat pumps. This roundtable explores the potential of geothermal energy as a tool for urban climate adaptation, addressing key questions: Why is this solution underutilized? Will the recent regulatory framework be sufficient to trigger the expected scale-up? What economic and implementation models can help overcome these barriers? A roundtable discussion moderated by Franck Turlan, journalist
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