Earnings Release • Mar 26, 2025
Earnings Release
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Pau, March 26, 2025
Pau, March 26, 2025 - Arverne Group (FR001400JWR8 - ARVEN), a French industrial player harnessing renewable subsurface resources to accelerate the energy transition, announces its 2024 annual results.
"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. 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. In 2025, the Group is anticipating significant milestones: 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. Since the transfer to the Euronext's general sub-fund, we are particularly
1 Business volume: consolidated revenue plus 50% of the revenue of DrillHeat (50%-owned subsidiary) and inter-sector drilling revenue
2 Lithium de France: subsidiary 63% owned by Arverne Group, 25% by Equinor and 12% by Hydro
3 Doublet: a production well and an injection well
pleased to welcome new individual shareholders, alongside our long-standing shareholders. I would like to thank all of the Group's teams for their commitment and their hard work for the benefit of the regions," said Pierre Brossollet, founder and CEO of Arverne Group.
A dedicated presentation meeting for institutional investors will be held on March 27 A dedicated Boursorama webinar for individual investors will be held live on April 02 at 6:30 p.m. CET, individual investors are invited to register and submit their questions in advance HERE
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Innovative geothermal energy offering: significant advances
In the current geopolitical context, geothermal energy is asserting itself as a sovereign and competitive energy source. It offers manufacturers and local authorities a solution to secure local supply, thereby reducing dependence on imports and exposure to gas prices volatility.
The French Energy and Climate Strategy (SFEC) has set an ambitious target: to increase geothermal production more than fourfold by 2035, reaching 28 TWh4 .
At the end of 2024, Arverne Group participated in the installation of the geothermal infrastructure at Roissy Charles de Gaulle airport for Groupe ADP, representing a major step forward in the airport's decarbonisation. With an annual production of up to 80 GWh, this installation will avoid the emission of 19,000 tonnes of CO₂.
Completed in just three months, this deep geothermal energy project was carried out on time and on schedule, contributing significantly to the growth in business volume in 2024.
The teams have designed an innovative and unique offering for the French market, significantly reducing the time between the design and commissioning of geothermal heat production projects. Arverne Group offers an integrated service solution, including geoscience and financing studies, drilling operations and geothermal power plants.
4 Source: National Integrated Energy-Climate Plan, June 2024
The strategy launched in 2024, focused on the Île-de-France region, has quickly delivered results. In early 2025, Arverne Group signed an initial contract for the design, drilling and operation of a lowcarbon heat network powered by geothermal energy. Developed in partnership with Dalkia and Îlede-France Énergies & Territoires, this project will benefit the cities of Clichy-sous-Bois and Livry-Gargan. Among the top 5 geothermal heat networks in Île de France, with a production capacity of 115 GWh, this project will reduce household energy bills by 50% over the entire concession period (30 years).
With a portfolio of projects under review totalling over 60 power plants and 3.5 TWh of potential production, Arverne Group is accelerating its development through an agile model and a selection of strategic partners. The Group confirms its objective of initial geothermal heat production in 2026.
Electrification of transport: a key lever for achieving a 90% reduction in GHG emissions in Europe by 2040 5 .
The energy transition is leading to increased demand for critical materials, including lithium, which is essential for electric batteries and energy storage. By 2030, global lithium demand is expected to increase by 142% to 2.6 Mt of lithium equivalent carbonate (LCE), while supply could become insufficient by 2026. Lithium prices could recover as early as the second half of 20256 .
Arverne Group and its subsidiary Lithium de France have taken a key step towards the industrialisation of the geothermal heat and lithium project, by successfully completing the prefeasibility study (PFS). The results have reinforced the initial assumptions and confirmed key parameters ensuring the feasibility of the project.
The identified operational costs (Opex) position the project in the first quartile of global lithium producers, ensuring its viability and competitiveness.
As a result of this study, Arverne Group has announced technical and strategic decisions and updated the project's key financial assumptions.
5 European Commission recommendation to achieve carbon neutrality by 2050 – compared to 1990
6 Source: Mineral Intelligence Benchmark, Q4 2024 – Lithium Forecast
To support its rapid expansion and industrial ambitions, Arverne Group significantly strengthened its operational capabilities in 2024:

• Gross business volume of €17.3m, +45% compared with 2023, in line with targets
| In thousands of euros | 2024 | 2023 | Var. % |
|---|---|---|---|
| Deep drilling (Arverne Drilling Services) | 13,954 | 9,835 | +42% |
| Other | 193 | 257 | -25% |
| Consolidated revenues | 14,147 | 10,092 | +40% |
| Inter-sector drilling turnover | 54 | 15 | +260% |
| Shallow drilling (DrillHeat) | 3,092 | 1,857 | +67% |
| Gross business volume | 17,293 | 11,964 | +45% |
Gross business volume, a key operating indicator for Arverne Group, stood at €17.3m in 2024, up 45% compared with 2023, in line with the target (between €16m and €18m). The revenue of the subsidiary Arverne Drilling Services, 100% owned by Arverne Group, is consolidated, while the revenue of DrillHeat, 50% owned by Arverne Group, is accounted for at 50%. Inter-sector drilling revenue is also added to this indicator.
Revenue from deep drilling and well maintenance reached €13.9m, up +42% compared with 2023. The deep geothermal installation at Paris Charles De Gaulle airport, completed at the end of 2024, within the planned deadlines and conditions, contributed significantly to growth.
After a temporary and early interruption of a well maintenance campaign for Storengy earlier this year, operations continued in the second half for the third year in a row.
DrillHeat, a drilling subsidiary 50% owned by Arverne Group, specialising in surface drilling operations, posted strong growth in 2024. DrillHeat's total revenue came to €6m, up +67% versus 2023. Business increased significantly with 27 projects completed (vs. 21 in 2023), 48,000 metres of probes drilled (vs. 33,000 metres in 2023) and an installed capacity of 2.4 MW (vs. 1.7 MW in 2023).
This growth is based on a bolstered commercial strategy, an increase in the productivity of the drilling fleet, the expansion of teams and the optimisation of capacity occupancy.
The Group's consolidated revenue came to €14.1m, up +40% versus 2023.
The "Geothermal energy production" and "Geothermal lithium extraction and distribution" activities, which are in the development phase, did not contribute to the business volume in 2024.
| In thousands of euros | 2024 |
|---|---|
| Development of PER | 14,101 |
| Acquisition of B18 rig | 22,618 |
| Drilling equipment | 11,764 |
| Other assets | 1,470 |
| Real estate | 1,983 |
| Gross CAPEX | 51,937 |
In 2024, Arverne Group rolled out a €51.9m CAPEX plan, in line with its forecasts.
The Group, which at the end of 2024 held 9 PERs (Exclusive Exploration Permit, licences), has continued to enhance its knowledge of the subsurface through 3D data acquisition exploration campaigns. The three campaigns conducted in 2024 represented an investment of €14.1m.
Arverne Group is bolstering its drilling portfolio and strategic infrastructure.
Arverne Group invested €22.6m in a new deep drilling machine, B18, financed through leasing. This equipment complements the Group's operational portfolio, a key strategic asset for the development of all types of geothermal heat projects.
At the same time, €11.8m was allocated to additional drilling equipment, in anticipation of the upcoming campaigns for geothermal heat and geothermal lithium projects.
The real estate investment notably includes the Maisse logistics base, a key site in the Île-de-France region dedicated to machine maintenance and drilling equipment storage, ideally located to support future operations in the region.
| In thousands of euros | 2024 | 2023 |
|---|---|---|
| Revenues | 14,147 | 10,092 |
| Purchasing and subcontracting | (18,754) | (11,409) |
| Personnel expenses | (20,326) | (13,110) |
| Taxes and duties | (335) | (292) |
| Other income and expenses | 6,897 | 2,792 |
| Current EBITDA7 | (18,371) | (11,928) |
| Depreciation and provisions | (2,397) | (1,898) |
| Current operating income | (20,768) | (13,826) |
| Other non-recurring operating income & expenses | 0 | (47 503) |
| Operating income | (20,768) | (61,330) |
| Financial income and expenses | 11,196 | 6,545 |
| Income tax | 197 | 968 |
| Share of net income of equity-accounted companies | (1,750) | - |
| Total net income | (11,126) | (53,816) |
| Group share | (9,993) | (52,035) |
| Share of non-controlling interests | (1,133) | (1,782) |
Total revenue reached €14.1m, with revenue mainly generated by the deep drilling business (98.7%), up +40% compared with 2023. This growth was driven in particular by the geothermal installations built for Roissy Charles De Gaulle airport.
Personnel expenses increased to €20.3m, up +55% compared with 2023, due to the strengthening of the teams, with +85 FTEs8 in 2024, and the structuring of the Group's governance. As of December 31, 2024, the group had 200 employees.
Other income and expenses totalled €6.9m (vs. €2.8m in 2023), including €6.5m in capitalised production mainly linked to investments for the launch of the Lithium de France drilling campaign and the refurbishment or start-up of rigs.
Financial income and expenses totalled €11.2m, up +71% compared with 2023, generated mainly by the investment of the surplus cash raised at the time of the IPO, totalling €7.8m. Other financial income came from the revaluation of Lithium de France's Ratchet B warrants and the revaluation of Geoven's debts pursuant to the safeguard plan.
7 Corresponds to current income before depreciation and amortisation
8 FTE: Full-Time Equivalent
The share of income accounted for using the equity method amounted to -€1.7m due to the impairment of DrillHeat's partner current account following the company's net book position. Net income amounts to -€11.1m in 2024.
Balance sheet
| In thousands of euros | 12/31/2024 | 12/31/2023 |
|---|---|---|
| Intangible assets | 53,056 | 39,192 |
| Tangible assets | 52,274 | 19,445 |
| Other non-current assets | 3,148 | 3,448 |
| Total non-current assets | 108,478 | 62,084 |
| Inventories and trade receivables | 22,486 | 15,688 |
| Other current assets | 321 | 1,096 |
| Cash and cash equivalents | 123,834 | 143,229 |
| Total current assets | 146,641 | 160,012 |
| Total assets | 255,119 | 222,097 |
As of December 31, 2024, total assets increased to €255m (vs. €222m as of December 31, 2023) due to the €51.9m investment programme carried out in 2024, broken down as follows:
In addition, inventories and receivables increased due to the build-up of equipment inventories in anticipation of future drilling campaigns (€1.8m), as well as the increase in trade receivables due to projects in progress as of December, 31 2024.
| In thousands of euros | 12/31/2024 | 12/31/2023 |
|---|---|---|
| Capital and share premium | 194,302 | 194,302 |
| Other reserves & Accumulated results | (38,413) | (30,210) |
| Non-controlling interests | 13,993 | 14,346 |
| Total shareholders' equity | 169,881 | 178,438 |
| Borrowings - non-current |
31,838 | 9,904 |
| Other non-current liabilities | 5,136 | 0 |
| Other provisions | 2,103 | 1,632 |
| Deferred tax liabilities | 5,314 | 5,465 |
| Other non-current liabilities | 1,628 | 3,437 |
| Total non-current liabilities | 46,018 | 20,438 |
| Borrowings - current | 6,401 | 1,856 |
| Other financial liabilities and derivatives | 3, 074 | 7 ,260 |
| Other provisions | 901 | 992 |
| Other current liabilities | 28,843 | 13,112 |
| Liabilities held for sale | 0 | 0 |
| Total current liabilities | 39,219 | 23,221 |
| Total liabilities | 255,119 | 222,097 |
The financial structure remains solid following the successful IPO in September 2023.
Financial debts increased owing to the investment in a new drilling rig, financed by lease, and the injection of €4.4m into a current account by Herrenknecht, at the time of the establishment of the new subsidiary DrillDeep.9
In addition, the Ratchet B warrant derivatives on Lithium de France were revalued, reducing liabilities by €4.2m, while other current liabilities increased due to ongoing operations as of December 31, 2024 (trade payables and liabilities on fixed assets).
The Group's net cash position is in surplus and stood at €85.6m as of December 31, 2024.
9 DrillDeep: dedicated to deep drilling, co-owned with Arverne Group
In 2024, Arverne Group achieved all its objectives as a Mission-Driven Company, thereby confirming its societal and environmental commitments. This progress is outlined in the 2024 mission report, available on the Group's website.
The key achievements include:
An independent audit validated compliance with the environmental and social objectives set, consistent with the Group's purpose.
10 Gross business volume: consolidated revenue plus 50% of the revenue of DrillHeat (50%-owned subsidiary), plus inter-sector drilling revenue
11 Doublet: a production well and an injection well
• Pre-industrial phase: starting in 2025, with an expected duration of 12 to 18 months
Arverne Group, with its subsidiary Lithium de France, is launching the pre-industrial phase incorporating: the definitive feasibility study or DFS12, the first drilling operations (first doublet), the installation and commissioning of a DLE13 technology demonstrator and the bankable feasibility study or BFS14 .
This pre-industrial phase represents a self-financed investment of around €50m and constitutes a preliminary stage for the launch of the industrial phase with Phase 1.
Phase 1 targets the first production of geothermal heat in 2027 and the first production of geothermal lithium in 2028.
This phase includes the completion of 2 doublets (complementary to the one from the pre-industrial phase), 3 geothermal plants, 3 lithium extraction units (DLE) and 1 purification module. The Group expects a gross investment of around €370m, divided between the project's strategic partners, subsidies, bank financing and equity financing. The gross investment amount could be revalued following the completion of the pre-industrial phase.
12 DFS: Definitive Feasibility Study
13 DLE: Direct Lithium Extraction
14 BFS: Bankable Feasibility Study
15 PFS: Pre-Feasibility Study

Arverne Group remains on track with its roadmap and its growth trajectory.
| 2024 - 2031: |
Total gross investment program of €2.4bn, including: | ||
|---|---|---|---|
| €500m16 allocated to the development of geothermal heat production - projects between €1.8bn and €1.9bn17 for the geothermal heat and lithium project - in Alsace |
|||
| 2026: | First geothermal heat production |
||
| 2028: | First geothermal lithium production |
||
| Consolidated revenue between €180m and €220m | |||
| Current EBITDA margin of around 40% | |||
| 2031: | Annual production capacity to reach 4.0 TWh of geothermal heat per year |
||
| Annual production capacity for the Alsace project to reach 27 kt of lithium (LC) |
|||
| Consolidated revenue of between €900m and €1bn | |||
| Current EBITDA margin of around 70%. |
The Group specifies that the pre-industrial phase may lead to an adjustment of its growth trajectory for 2031.
Next publication: September 24, 2025, Half-year 2025 results (after Paris stock market closing time)
Arverne Group specializes in harnessing underground resources to transform them into environmentally friendly, local and renewable energy, contributing to the prosperity of local communities. As an integrated industrial player, Arverne Group spans the entire underground value chain, from exploration to drilling and production to sales to end-users. Arverne Group aims to become the French leader in geothermal energy and its by-products, including low-carbon geothermal lithium. Founded in Pau in 2018, Arverne Group has structured its business activities around several subsidiaries, notably 2gré (sale of geothermal heat), Lithium de France (geothermal heat and extraction and sale of geothermal lithium) and Arverne Drilling Services (drilling operations).
A mission-driven company, Arverne Group is listed on the Tech Leaders segment of Euronext Paris (ISIN FR001400JWR8, symbol ARVEN).
www.arverne.earth
16 Gross amount before subsidies
17 Gross amount before subsidies, includes 15% contingency

Mathilde Guillemot
SEITOSEI.ACTIFIN – Benjamin Lehari [email protected]


| In thousands of euros | 2024 | 2023 |
|---|---|---|
| Revenues | 14,147 | 10,092 |
| Purchasing and subcontracting | (18,754) | (11,409) |
| Personnel expenses | (20,326) | (13,110) |
| Taxes and duties | (335) | (292) |
| Other income and expenses | 6,897 | 2,792 |
| Current EBITDA18 | (18,371) | (11,928) |
| Depreciation and provisions | (2,397) | (1,898) |
| Current operating income | (20,768) | (13,826) |
| Other non-recurring operating income & expenses | 0 | (47,503) |
| Operating income | (20,768) | (61,330) |
| Financial income and expenses | 11,196 | 6,545 |
| Income tax | 197 | 968 |
| Share of net income of equity-accounted companies | (1,750) | - |
| Total net income | (11,126) | (53,816) |
| Group share | (9,993) | (52,035) |
| Share of non-controlling interests | (1,133) | (1,782) |
18 Corresponds to current income before depreciation and amortisation
ASSETS
| In thousands of euros | 12/31/2024 | 12/31/2023 |
|---|---|---|
| Intangible assets | 53,056 | 39,192 |
| Tangible assets | 52,274 | 19,445 |
| Other non-current assets | 3,148 | 3,448 |
| Total non-current assets | 108,478 | 62,084 |
| Inventories and trade receivables | 22,486 | 15,688 |
| Other current assets | 321 | 1,096 |
| Cash and cash equivalents | 123,834 | 143,229 |
| Total current assets | 146,641 | 160,012 |
| Total assets | 255,119 | 222,097 |
| In thousands of euros | 12/31/2024 | 12/31/2023 |
|---|---|---|
| Capital and share premium | 194,302 | 194,302 |
| Other reserves & Accumulated results | (38,413) | (30,210) |
| Non-controlling interests | 13,993 | 14,346 |
| Total shareholders' equity | 169,881 | 178,438 |
| Borrowings - non-current |
31,838 | 9,904 |
| Other non-current liabilities | 5,136 | 0 |
| Other provisions | 2,103 | 1,632 |
| Deferred tax liabilities | 5,314 | 5,465 |
| Other non-current liabilities | 1,628 | 3,437 |
| Total non-current liabilities | 46,018 | 20,438 |
| Borrowings - current | 6,401 | 1,856 |
| Other financial liabilities and derivatives | 3,074 | 7,260 |
| Other provisions | 901 | 992 |
| Other current liabilities | 28,843 | 13,112 |
| Liabilities held for sale | 0 | 0 |
| Total current liabilities | 39,219 | 23,221 |
| Total liabilities | 255,119 | 222,097 |

| In thousands of euros | 2024 | 2023 |
|---|---|---|
| Net income/(loss) | (11,126) | (53,816) |
| Depreciation, amortization and provisions net of reversals | 2,821 | 2,262 |
| Other changes | (2,478) | 40,590 |
| Cash flow from operations | (10,783) | (10,964) |
| Changes in inventories, in trade and other receivables | (5,159) | 2,053 |
| Change in trade and other payables | 5,682 | 2,121 |
| Change in other current receivables/payables | 4,048 | (8,690) |
| Tax paid | (748) | 130 |
| Net cash flow from operating activities | (6,959) | (15,349) |
| Net acquisition of fixed assets | (9,502) | (15,590) |
| Capitalized development expenditure | (10,419) | (5,914) |
| Other changes | 2 867 | 1,061 |
| Net cash flow from investing activities | (17,055) | (20,444) |
| Capital increases | 734 | 114,599 |
| New borrowings | 1,323 | 15,499 |
| Repayment of borrowings | (463) | (7,730) |
| Current account contribution on Herrenknecht | 4,525 | 0 |
| Other changes | (1,499) | 53,487 |
| Net cash flow from financing activities | 4,620 | 175,856 |
| Change in cash and cash equivalents | (19,394) | 140,063 |
| Cash and cash equivalents as of January 1 | 143,227 | 3,165 |
| Cash and cash equivalents as of December 31 | 123,834 | 143,227 |
This press release contains forward-looking statements. These statements provide no guarantee of the Company's future performance. They relate to the Company's future prospects, developments and marketing strategy and are based on analyses of earnings forecasts and estimates of amounts not yet determinable. Forward-looking statements are subject to a variety of risks and uncertainties, in particular those described in the Universal Registration Document, as they relate to future events and are dependent on circumstances that may or may not materialize in the future. Forward-looking statements cannot, under any circumstance, be construed as a guarantee of the Company's future performance; the Company's actual financial position, results and cash flow, as well as the trends in the sector in which the Company operates, may differ materially from those proposed or reflected in the forward-looking statements contained in this press release. Even if the Company's financial position, results, cash flows and developments in the sector in which the Company operates were to conform to the forward-looking statements contained in this press release, such results or developments cannot be construed as a reliable indication of the Company's future results or developments.
Certain figures and numbers appearing in this press release have been rounded. Consequently, the total amounts and percentages appearing in the tables are not necessarily equal to the sum of the individually rounded figures, amounts or percentages.
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