France’s Arverne Group is anticipating big things this coming year, according to Pierre Brossollet, its founder and CEO.
“In 2025, the group is anticipating significant milestones,” he said when presenting the company’s 2024 annual results.
Key things to come include “the launch of the pre-industrial phase of our innovative project combining geothermal heat and lithium in Alsace, and the signing of contracts confirming our first geothermal heat production in 2026,” he noted.
It underlines a growing confidence at the French industrial player, which reported a 45% growth in gross business volumes compared with 2023, reaching €17.3mn in 2024.
The outlook for 2025 is for continued strong growth in gross business volumes, which are expected to reach between €25mn and €30mn, representing growth from 45% to 75% compared to 2024.
Brossollet also welcomed new shareholders to the group following its transfer to the Euronext stock market’s general sub-fund.
“Arverne Group, positioned in the fast-growing geothermal heat and lithium markets, has developed a unique strategy for harnessing subsurface natural resources, ensuring a sovereign and competitive energy transition,” said Brossollet.
“In 2024, we demonstrated the relevance of our model from the design of facilities for geothermal heat to the exploitation, and completed the geothermal installation at Roissy Charles de Gaulle airport, thereby contributing to its decarbonisation.”
The group’s strategy focused on the Île-de-France region, which surrounds the nation’s capital, Paris, but has grown in scale and ambition, notably given current geopolitical uncertainties and rising energy demand.
“In the current geopolitical context, geothermal energy is asserting itself as a sovereign and competitive energy source,” the company noted in its results statement.
“It offers manufacturers and local authorities a solution to secure local supply, thereby reducing dependence on imports and exposure to gas price volatility.”
The French Energy and Climate Strategy (SFEC) has set an ambitious target to increase geothermal production more than four-fold by 2035, reaching 28 TWh.
Arverne reaffirmed its objective to achieve initial geothermal heat production in 2026, as part of a portfolio of projects under review totalling more than 60 power plants and 3.5 TWh of potential output.
In early 2025, it signed an initial contract for the design, drilling and operation of a geothermal heat network, developed in partnership with Dalkia and Île-de-France Énergies & Territoires, that will benefit the cities of Clichy-sous-Bois and Livry-Gargan.
Among the top five geothermal heat networks in Île de France, with a production capacity of 115 GWh, it claims the project will reduce household energy bills by as much as 50 per cent over the 30-year concession period.