Arverne expands geothermal asset portfolio with new lithium exploration permit in Auvergne Arverne secures 442.7 km² PER “Bassin de Limagne” near Clermont-Ferrand French geothermal developer Arverne (Euronext: ARVEN) has been granted an exclusive research permit (Permis Exclusif de Recherches, PER) for lithium and related substances covering the “Bassin de Limagne” in Puy‑de‑Dôme, Auvergne. The five‑year permit, announced 3 September 2026, spans 442.68 km² and adds to Arverne’s growing national portfolio of PERs: the company now holds nine permits in France, three of which are focused on lithium. The award underscores Arverne’s strategy to combine geothermal heat production with geothermal lithium extraction — an integrated model the company is already deploying elsewhere in France. For the Auvergne permit, Arverne emphasizes that the Bassin de Limagne area overlaps with its existing PER for the Riom‑Clermont‑Métropole, where 3D exploration studies have previously evaluated the subsurf...
Sage Geosystems Inc. and San Miguel Electric Cooperative: A Revolutionary Partnership in Geothermal Energy Storage
In a groundbreaking move that could redefine the future of sustainable energy, Sage Geosystems Inc. has announced its partnership with San Miguel Electric Cooperative, Inc. (SMECI) to build the world’s first Geopressured Geothermal System (GGS) in Christine, Texas. This 3MW EarthStore™ energy storage facility is poised to make history as it becomes the first of its kind to supply geothermal energy storage to the ERCOT grid, marking a significant advancement in the quest for reliable, renewable energy.
A New Era of Energy Storage
The significance of this project cannot be overstated. As renewable energy sources like wind and solar continue to expand, the need for dependable, long-duration energy storage solutions becomes increasingly urgent. Sage’s EarthStore™ technology answers this call, offering a revolutionary system that taps into the earth’s natural capacity for energy storage. This is more than just an energy storage facility—it's a beacon of hope for a future where energy is both sustainable and dependable.
What sets Sage’s EarthStore™ apart is its ability to store potential energy deep within the earth, ensuring a steady and reliable supply of electricity to the grid, regardless of weather conditions. Unlike traditional storage systems that rely on lithium-ion batteries, EarthStore™ offers long-duration storage with targeted durations of 6 to 10 hours and a round-trip efficiency of 70-75%. This system is designed to work in harmony with wind and solar power, providing a stable and dispatchable energy source that could revolutionize how we think about renewable energy.
The Power of Partnership
The collaboration between Sage Geosystems and San Miguel Electric Cooperative is a testament to the power of innovative partnerships in driving the energy transition forward. Craig Courter, CEO of SMECI, emphasized the importance of this project for the ERCOT utility grid, which increasingly relies on intermittent renewable energy sources. "We are excited to be part of this innovative project that showcases the potential of geothermal energy storage," Courter stated.
The strategic location of the EarthStore™ facility near SMECI’s lignite coal power plant in Christine, Texas, highlights the potential for geothermal energy to complement existing energy infrastructure, paving the way for a more resilient and sustainable energy future.
A Glimpse into the Future
As Sage Geosystems prepares to launch the EarthStore™ facility later this year, the energy industry watches with bated breath. This project is not just about energy storage; it’s about demonstrating the untapped potential of geothermal energy as a viable and scalable solution for long-duration energy storage.
With plans to apply for additional drilling permits in Texas, including one in Atascosa County for the EarthStore™ facility and another in Starr County, Sage Geosystems is positioning itself as a leader in the geothermal energy sector. The company’s expertise, honed by over 150 combined years in the oil and gas industry, is now being channeled into pioneering sustainable energy solutions that could very well shape the future of global energy.
The Road Ahead
As the world shifts towards a cleaner energy landscape, the partnership between Sage Geosystems and San Miguel Electric Cooperative is a powerful reminder of the possibilities that lie ahead. The EarthStore™ facility in Christine, Texas, is more than just a project—it’s a symbol of innovation, resilience, and the relentless pursuit of a sustainable future.
Source:Sage Geosystems , BUSINESS wire
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