Europe risks missing the ‘geothermal revolution’ unless policymakers act to unlock its potential, according to an open letter sent to EU leaders by Future Cleantech Architects and a broad coalition of industry partners.
Energy resiliency and security of supply are two driving forces that could add momentum to the geothermal sector across Europe, amid oil and gas price spikes triggered by the Iran conflict in the Middle East.
In the UK, wind and solar blunted the worst of the price shocks in the first four weeks of the current fossil fuel crisis by displacing gas generation, delivering critical cost savings, according to a new report by Ember Energy.
It stated that new wind and solar saved Britain approximately £7mn per day in gas purchases.
The international price of gas surged in March 2026 following the start of the US-Israel war with Iran on 28 February, initiating the second fossil fuel crisis in Europe in just four years, after the Russia-Ukraine conflict.
As a result of new wind and solar capacity, in March 2026 gas power generation was 39% lower than in March 2021.
“The latest fossil fuel crisis proves that wind and solar have already lowered our dependence on gas and delivered genuine savings,” said Josie Murdoch, Energy Analyst, Ember.
“We now need to deploy more renewables and reduce our reliance on volatile gas for good.”
While the report does not explicitly cite geothermal, it claims that Britain is “better insulated” since the 2021-23 energy crisis.
As well as providing ‘unblockadable’ energy, geothermal can also deliver consistent 24/7 baseload power, unlike more intermittent solar or wind, making it attractive in terms of security of supply and resiliency.
Since October 2021, Ember said over 130 wind and solar projects have been delivered — 7.7 GW of new wind power (onshore and offshore, including floating) and 7.6 GW of new solar power.Britain now has close to 55 GW of wind and solar capacity, leading to higher renewable generation and increasingly displacing gas in Britain’s power system, it noted.
More broadly, across the European Union, analysis shows the cost of gas-fired power increased by more than 50% in the first 10 days of the Iran conflict, with some countries, such as Italy, more affected than others.
In a February 2026 report, Ember suggested that geothermal could replace 42% of the EU’s coal and gas-fired generation, providing a stable, ‘always-on’ alternative to fossil fuels for less than €100/MWh – the cost of coal and gas electricity.
“Once restricted to a few geological hotspots like Iceland or Tuscany, modern geothermal is now cost-competitive with gas across much of the continent,” said Tatiana Mindekova, Ember Policy Advisor and author of the February report.
“As Europe seeks to slash emissions while meeting the energy demands of heavy industry and AI data centres, this untapped resource offers a clean, firm power supply that remains insulated from the price volatility of imported fossil fuels.”
Expro has secured a Tubular Running Services (TRS) contract with Lithium de France to support new geothermal and direct lithium extraction wells in Alsace.
A geothermal heat pump has been installed at the site of Nelt Group, a leading logistics company in Serbia, as part of efforts to curb environmental impact.
The new geothermal system at the Dobanovci distribution hub will reduce greenhouse gas emissions by 40% by 2030 and save 7 million kWh of energy annually, according to a statement by the European Union (EU) mission to Serbia.
Serbia is not an EU member but provided support for the project — together with the Swiss government, with a US$200,000 donation — as part of the ‘EU for Green Agenda in Serbia’ initiative.
“The European Union stands with Serbia on the path of green transition. We support the adoption of cleaner technologies, better environmental management and progress toward a greener, more sustainable, and competitive economy,” said Andreas von Beckerath, Ambassador of the European Union to Serbia.
“Nelt’s example shows that renewable energy can replace fossil fuels in complex logistics operations while simultaneously contributing to both environmental and economic goals.”
The hybrid water-to-water system replaces a gas boiler and provides heating and cooling for two large halls with warehouse and office spaces, and a technical block for vehicle servicing.
It will provide about 40% of the total energy required for these facilities and operates in combination with the existing solar power plant.
“Our long-term commitment is to develop the company responsibly and sustainably through initiatives that deliver measurable and concrete results,” said Marko Cilić, Chairman of the Executive Board and Acting CEO of Nelt Group.
“The geothermal system in Dobanovci has been designed with a clear development perspective and will be an integral part of future logistics capacities, connected to the new warehouse within the centre.”
Anne Lugon-Moulin, Ambassador of Switzerland to Serbia, added: “The project with Nelt clearly shows how innovative solutions can contribute to reducing harmful emissions and improving energy efficiency, and demonstrates that companies can be both competitive and environmentally responsible.”
In a further sign of an improvement to financing conditions within the geothermal sector, Arverne Group has announced plans for a €33mn fundraiser via a bond issue.
The French geothermal company, listed on Euronext Paris, said in a statement that the issue would be open to existing shareholders including Bpifrance, Eiffel Essentiel, Ademe Investissement and Crédit Mutuel Equity.
The bond issue is significant in that it highlights growing investor confidence and interest across the broader geothermal sector.
Financing remains one of the biggest barriers to large-scale deployment, both within Europe and internationally.
The fund-raising issue also marks the first step of Arverne Group’s new ‘Dual Flow’ industrial and commercial roadmap through to 2033 in which it aims to accelerate business growth.
Its aggressive roadmap include first production and sales of heating and cooling in 2027 and first production and sales of geothermal lithium in 2028.
Looking ahead to 2031-2033, it aims to see around 4 TWh/year generated annually in France from deep geothermal energy, together with 27,000 metric tons of lithium carbonate annually — enough to power 800,000 electric vehicles using Arverne geothermal lithium.
Much of that will hinge on the company’s 2026 agenda, the first year of implementation of the Dual Flow plan.
This includes: a target of securing long-term contracts worth €400mn; drilling to be completed for the first doublet in the Lithium de France project and commissioning of the Direct Lithium Extraction (DLE) demonstration plant; continuing to reduce environmental impact as an innovative and responsible operator; and funding the group's industrial and commercial expansion.
In essence, the group aims to strengthen geothermal energy’s role in France’s energy mix and secure Europe’s supply of geothermal lithium, according to Pierre Brossollet, Arverne’s Founder and CEO.
“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 €400mn in long‑term contracts,” he said.
Brossollet also outlined his belief in the financial viability of the company and industry.
“The business models we are developing, with EBITDA margins above 50% and multi‑decade contracts, will generate secured revenues and recurring cash flows,” he added.
“Arverne Group is now at the dawn of a major value‑creation cycle.”
DrillHeat, a specialist in the decarbonisation of buildings through shallow geothermal energy, has completed its 100th installation, carried out near Clermont-Ferrand, France, for biotechnology company Greentech.
Denmark’s Green Therma ApS and Germany’s Geothermie Rupertiwinkel GmbH (GTR) have signed a Letter of Intent (LoI) to explore the feasibility of deploying a closed-loop geothermal heat solution in the Rupertiwinkel geothermal area in Bavaria.
“This collaboration represents an exciting opportunity to demonstrate how closed-loop geothermal technology can unlock reliable geothermal heat with lower geological risk,” said Jørgen Peter Rasmussen, CEO of Green Therma.
The two sides will evaluate the potential application of Green Therma’s Heat4Ever technology, a closed-loop geothermal system designed to extract geothermal heat while minimising the geological risks typically associated with conventional hydrothermal geothermal projects.
The initial phase will focus on a feasibility assessment, including geological analysis, heat demand evaluation, and a preliminary design of a Heat4Ever geothermal plant.
If successful, the project could form the basis for future development of a geothermal heat supply supporting industrial and district heating demands in the region, one of Germany’s wealthiest areas.
“We see strong potential in combining our geothermal development ambitions with Green Therma’s innovative Heat4Ever solution to help deliver sustainable heat for the region,” added Anthony Hawkins, Managing Director of Geothermie Rupertiwinkel GmbH.
Earlier in March, Green Therma also signed an LoI with SWK Stadtwerke Kaiserslautern Versorgungs-AG to assess the deployment of closed-loop geothermal heat in Kaiserslautern.
This project aims to evaluate how Green Therma’s Heat4Ever solution can supply geothermal heat into SWK’s 105-km district heating network as part of SWK’s ambition to achieve carbon-neutral heat by 2045.
In February, ZeroGeo Energy GmbH announced the purchase of GTR and its plans for a green energy hub in Kirchanschöring, Bavaria, consisting of a geothermal heating and cooling and/or power development, plus a battery energy storage system.
Expro is ready to deliver well testing services for the Schleidberg well in Vulcan Energy’s significant Lionheart Project.
The European Geothermal Energy Council (EGEC) has broadly welcomed the new Clean Energy Investment Strategy announced this month by the European Commission but has urged for both public and private financing to be available for geothermal projects.
The group noted in a statement that it was pleased to see the emphasis on the need to de-risk investments in clean energy projects through the strategic use of public funds.
EGEC’s Secretary General, Philippe Dumas, also flagged the significance of the timing of the strategy, as energy prices spiked amid escalating conflict in Iran and across the Middle East.
“When it comes to energy policy, Europe must avoid the trap of always reacting to external shocks and lurching from crisis to crisis,” he said. “What we need is a strategic, long-term approach to support the transition away from imported fossil fuels towards renewable and decarbonised energy sources – with geothermal solutions playing a key role.”
He added: “Geothermal must be at the heart of Europe’s approach to providing clean electricity as well as heating and cooling, with security of supply and affordable prices for all energy consumers – from households to industries.”
Dumas said that geothermal canhelp to bring down energy costs for people and businesses, thereby strengthening the EU’s competitiveness.
“But, in order to access these benefits, we need a more encouraging environment for investment, with targeted European financial instruments that can leverage private capital."
He also called for a geothermal strategy and action plan at EU level with “ambitious targets” to support the roll-out of geothermal across member states, as well as a an industrial alliance to facilitate the sharing of best practice.
“The EU has a vital role to play when it comes to public funding and financing for geothermal energy projects,” said Dumas. "In this regard, we would like to see the European Commission develop a sectoral tripartite contract for geothermal energy, similar to those already announced in relation to offshore wind and energy storage under the umbrella of the Affordable Energy Action Plan."
The Commission’s proposals also include aCitizens Energy Package, to support the establishment of energy communities at local level and enable them to invest in geothermal heating and cooling networks.
“Reducing heating and cooling costs with secure supplies and stable prices benefits everyone, and is especially vital if we want to tackle energy poverty,” said Dumas.
Geothermal heating and cooling solutions, including district heating and cooling networks that utilise the stable temperatures found underground, can offer benefits including no pollution, zero emissions, extended lifetimes and low costs for operation and maintenance.
“The Citizens Energy Package should also enable fair competition between different energy sources, with an emphasis on long-term costs and affordability for consumers,” added Dumas, calling for a more level playing field.
Heating currently represents 50% of the EU’s overall energy consumption, 80% of the energy consumption for individual buildings, more than 50% of energy for commercial buildings and a large part of the energy consumption for industry and farmers, he noted.
“When installing a new heating and cooling system, consumers – from households and building owners to cities, industry or farmers – should be offered a choice between all heating sources that lets geothermal compete with other solutions on a level playing field that takes emissions and long-term running costs into account,” he added.
EGEC also underlined the importance of strengthening competition between energy technologies in heating and cooling markets, as emphasised in the Citizens Energy Package and to be highlighted in the upcoming Heating and Cooling Strategy.
Valencia is seeking to champion the use of geothermal energy in popular tourist attractions, with a landmark project beneath the Museu de les Ciencies, a well-known science destination in the southern Spanish city.
It has launched a landmark project with the deployment of a large-scale geothermal plant under the iconic museum, within the architectural complex of the Ciutat de les Arts i les Ciencies.
The commissioning of the installation is “imminent”, a statement published on openPR noted, marking what it called “a transformative milestone in the sustainable HVAC decarbonisation of major cultural infrastructure."
The geothermal project is led by Grupo Itecon, through its subsidiary DCL Geoenergia, and drawing on its proprietary DCL GEOENERGIA technology.
According to the statement, the development positions the Museu de les Ciencies as the largest cultural building in Europe to utilise geothermal energy powered by DCL GEOENERGIA technology.
With an installed thermal capacity of 4,050 kW, the plant will also become the largest geothermal installation in Valencia.
The DCL GEOENERGIA geothermal system, engineered and implemented by Grupo Itecon, is based on a high-efficiency field of 32 vertical geothermal boreholes, interconnected through a closed-loop hydraulic circuit.
The system leverages the stable subsurface temperature to provide efficient heating and cooling through ground-source heat exchange.
During the summer months, excess heat from the building is transferred into the ground, while in winter, thermal energy is extracted from the subsurface to supply heating.
“The result is a combustion-free, zero direct-emission HVAC solution, delivering energy stability, operational resilience and a significant reduction in fossil fuel dependency,” the statement added.
The installation is expected to generate annual energy savings over 1,013,000 kWh, while cutting around 335,000 kg of carbon emissions per year.
“These performance indicators position DCL GEOENERGIA technology as a strategic solution for the real decarbonisation of large public buildings and high-demand infrastructures,” the statement noted.
“The imminent commissioning of this geothermal plant represents not only a technical achievement but also a scalable industrial model applicable to airports, hospitals, commercial complexes, and large urban developments across Europe and beyond.”
US-based Teverra has announced a new partnership with Spain’s Earth Energy Explorers to support the development of the Melilla geothermal project in the Spanish autonomous city of Melilla.
Teverra is a leading subsurface solutions provider specialising in geothermal and subsurface energy technologies.
It will work alongside its Spanish partner at the project site in Melilla, an area situated on the North African coast, surrounded by Morocco and bordering the Mediterranean Sea.
Under the collaboration, Earth Energy Explorers serves as the project developer, while Teverra will provide technical support, including subsurface characterisation, resource assessment, risk-reduction planning and technical advisory services to support geothermal exploration and development.
“We are excited to partner with Earth Energy Explorers on the Melilla Geothermal Project,” said Randal Wichuk, CEO of Teverra.
“Geothermal presents a powerful opportunity to deliver secure and dispatchable baseload power while occupying minimal land and supporting grid stability. Our team is proud to support this important initiative through advanced subsurface analysis and de-risking approaches that improve predictability and success across the project lifecycle.”
The successful development of geothermal energy in Melilla could play a strategic role in the territory by strengthening energy security and independence, reducing reliance on imported fuels, and enabling a stable baseload renewable energy source.
A Teverra statement noted that the region’s geologic setting and subsurface heat conditions provide “promising potential” for geothermal exploration and a low-carbon energy resource that can serve both power, heating and cooling needs.
The project also reflects a growing momentum across Europe and the Mediterranean to accelerate geothermal as a scalable and reliable renewable energy resource.
“We are pleased to collaborate with Teverra as our consulting partner,” said Carlos Diaz, Partner and Technical Director of Earth Energy Explorers.
“Teverra brings deep technical expertise in subsurface geomechanics and geothermal development. Their support strengthens our ability to systematically evaluate the resource, reduce drilling and development risk, and accelerate the pathway toward a successful geothermal project in Melilla.”
The statement added that the partnership supports “a shared commitment to enabling the energy transition through cutting-edge subsurface technology, data-driven decision-making, and robust engineering workflows that reduce uncertainty and enhance project bankability.”
Reykjavík University and Iceland’s national power company Landsvirkjun have taken a major step forward in clean energy innovation by jointly filing a patent application with the European Patent Office for a breakthrough geothermal technology.