Dual Flow - The Arverne industrial and commercial acceleration plan

Pau, March 26, 2026 - Arverne (FR001400JWR8 - ARVEN), the leading French supplier of geothermal solutions announces its roadmap for 2031–2033. Arverne aims to strengthen geothermal energy’s role in France’s energy mix and secure Europe’s supply of geothermal lithium.

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Presentation materials and video recordings of the events will be available in the Investors section.

Dual Flow Plan

Ambitions 2031/2033

• 2027: 1st production and sales of Heating & Cooling,
• 2028: 1ère production and sales of geothermal lithium,
• 2031-2033 :
  • ~ 4 TWh/year generated annually in France from deep geothermal energy, accounting for more than 50% of the production targets set out in the third Multi-Year Energy Plan, and ~ 1 million metric tons of CO₂ emissions avoided per year,
  • 27,000 metric tons of lithium carbonate produced annually, enough to power 800,000 electric vehicles using Arverne geothermal lithium.

2026: 1st year of implementation of the Dual Flow plan

• Target of securing long-term contracts worth €400 million
• Drilling completed for the first doublet in the Lithium de France project and commissioning of the Direct Lithium Extraction (DLE) demonstration plant

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• Continuing to reduce environmental impact as an innovative and responsible operator.

• Funding the group's industrial and commercial expansion:
  Arverne announces a first financing milestone with a proposed bond issue (ORANE) for a minimum amount of €33 million, which would be subscribed primarily by Bpifrance, alongside its long-standing shareholders Eiffel Essentiel, ADEME Investissement and Crédit Mutuel Equity, historical shareholders of Arverne.1

Pierre Brossollet, Founder and Chief Executive Officer of Arverne, stated:

« “In a global context marked by instability, Arverne enhances subsurface resources to produce local, continuous energy, actively contributing to sovereignty, competitiveness and the energy transition in France and Europe.

With a portfolio of nearly one hundred projects in France and major advances in the Lithium de France project, Arverne expects a significant acceleration from 2026 onward, with the signing of €400m in long-term contracts.

By 2031–2033, Arverne targets approximately 4 TWh per year of deep geothermal energy production in France, representing more than 50% of France’s energy roadmap objectives, corresponding to 1 million tonnes of CO₂ emissions avoided compared with gas. Annual production of 27,000 tonnes of lithium in Alsace will equip the batteries of 800,000 electric vehicles with French geothermal lithium.

The business models we are developing, with EBITDA margins above 50% and multi-decade contracts, will generate secured revenues and recurring cash flows.

I would like to express my gratitude to our current shareholders and those who will join us for their trust. Arverne Group is now at the dawn of a major value-creation cycle.” ”

[Read more in the press release available for download below]