Inauguration of Bagneux geothermal network

After two and a half years of work, the Bagéops heating network in Bagneux on the southern outskirts of Paris is now up and running. Nearly half of the people living in Bagneux and a significant number of Châtillon residents will benefit this clean, local energy source as of autumn 2016. The project reflects the resurgence of geothermal energy in the Ile-de-France region.

The towns of Bagneux and Châtillon chose to commit to an ambitious, long-term project to build a heating network supplied by geothermal power as part of the drive to support the energy transition and deliver energy to residents at competitive rates. The two municipalities implemented the project through an intercommunal association known as Syndicat Intercommunal de la Périphérie de Paris pour les Énergies et les Réseaux de Communication (SIPPEREC). Following an invitation to tender, Dalkia was awarded the public service concession contract to build and operate the network through its subsidiary Bagéops (1).

The municipality of Châtillion borders Bagneux and chose to green its existing heating network by connecting it to the Bagéops system.

It took two and a half years—from November 2014 to June 2016—to create a completely new heating network and related facilities. Work included drilling down to the Dogger aquifer, 1,800 metres below ground, building the geothermal plant, laying the underground heating network, installing two heat pumps to boost capacity, and providing a connection to the existing Châtillon heating network. The project brings geothermal heating to the equivalent of more than 10,000 homes in Bagneux and Châtillon as of autumn 2016.

Bagéops, the concession holder, has invested a total of €38 million in the project, with 20% of financing provided by the heat fund set up by the French environment and energy management agency (ADEME) and the Ile-de-France regional council.

The project meets a number of environmental, economic and social goals:
- Environmental benefits: the new geothermal network will prevent more than 15,000 metric tons of CO2 emissions each year, the equivalent of taking 5,000 cars off the roads;
- Economic benefits: the Bagéops project reduces costs and heating bills in the medium and long term, and because the network derives more than 50% of its energy from renewables, users benefit from VAT of just 5.5%;
- Social benefits: the new Bagneux heating network will supply more than 75% of social housing in the area as part of a tangible outreach initiative to tackle fuel poverty, a problem that affects an increasing number of families as a result of the rising cost of fossil fuels.

(1) Bagéops: "Ba" for Bagneux, "Gé" meaning earth in Greek and "Ops" meaning wealth in Latin.

"Geothermal energy provides a response to key environmental and social challenges in Bagneux. The energy gives us a means to tackle the problem of climate change through a solution that emits no greenhouse gases. It also provides us with a new way to offset fuel poverty by offering families inexpensive energy at stable rates. All of this reflects our goal of continuing to build a modern, sustainable town that promotes solidarity. A town that offers a better life for everyone."
Marie-Hélène Amiable, Mayor of Bagneux and Departmental Councillor for Hauts-de-Seine

"Châtillon is a town with a clear sustainability policy that is committed to geothermal energy as part of an inventive, long-term approach."
Jean-Pierre Schosteck, Mayor of Châtillon and Vice-Chairman of the Vallée Sud Grand Paris intercommunal association

"SIPPEREC has also demonstrated successful synergy in developing an environmental project for the region and its people. This local, renewable energy production was made possible through a public-private partnership, which is vital for such complex projects."
Jacques J.P. Martin, SIPPEREC Chairman, Mayor of Nogent-sur-Marne and Chairman of the ParisEstMarne&Bois intercommunal association

"Bagéops is a shining example of the drive to use local energy sources, which is a cornerstone of our strategy to help customers implement the energy transition policy."
Jean-Michel Mazalérat, Chairman and CEO of Dalkia