All media releases · 26. May 2026

AEW Energie AG is joining Geo-Energie Jura SA as a further shareholder, thereby bolstering the deep geothermal pilot project in AEW Energie AG is joining Geo-Energie Jura SA as a further shareholder, thereby strengthening the deep geothermal pilot project in Haute-Sorne in the Jura region. This climate-neutral technology is a cornerstone of the Energy Strategy 2050+ and is set to supply electricity and heat throughout Switzerland in future. Haute-Sorne in the Jura region. This climate-neutral te

All press reviews · 23. May 2026

However, the project has met with a mixed reception: Critics: Energy experts point out that deep geothermal energy is extremely expensive compared to solar power (by a factor of around 10) and has low efficiency. They also argue that, thanks to the expansion of wind energy and modern battery storage systems, such baseload energy is no longer absolutely essential in winter. Supporters: Representatives of the energy sector and the Swiss Federal Office of Energy (SFOE) counter that the expansion of

All press reviews · 10. May 2026

France’s energy consumption is heavily reliant on imported hydrocarbons, as demonstrated by the impact of the blockade of the Strait of Hormuz. Yet there is a carbon-free and largely untapped energy source beneath the soil of France: geothermal energy. This article, published in Le Monde on 10 May 2026, analyses the paradox of an abundant and stable energy source that is nevertheless struggling to gain widespread acceptance in France, despite the energy crisis and the closure of the Strait of Ho

All press reviews · 27. April 2026

A pioneering pilot project on deep geothermal energy is being taken forward in the Jura municipality of Haute-Sorne. The aim is to harness the heat of 135 degrees Celsius found at a depth of 4,000 metres to generate electricity for around 6,000 households and to recover residual heat for heating. The project utilises the Enhanced Geothermal Systems (EGS) method. This involves pumping water under high pressure into the hard rock to create artificial fractures for water circulation. In contras

All press reviews · 09. April 2026

Main argument The author criticises a recent report by the Swiss Academies of Arts and Sciences on Switzerland’s climate policy. According to the article, the report lacks scientific objectivity as it almost systematically disregards two technologies that are crucial to the energy transition: next-generation nuclear energy and deep geothermal energy. Key points of the criticism: An ideological bias: The author accuses the Academies of no longer acting as neutral scientific bodies, but of followi

All press reviews · 11. February 2026

Deep geothermal energy is seen as key to the energy transition, but its implementation is challenging and, in the case of hydrothermal systems, often involves a high risk of failing to find a suitable site. The Haute-Sorne pilot project demonstrates how these challenges might be overcome – with impressive results from deep drilling, hydraulic stimulation and state-of-the-art monitoring.

All press reviews · 18. November 2025

The article argues that geothermal energy is undergoing a technological revolution that could transform it from a minor, geography-dependent energy source into a global powerhouse capable of rivaling nuclear energy. 1. The Dawn of Enhanced Geothermal Systems (EGS) Historically, geothermal power accounted for less than 1% of the world's electricity because it required highly specific natural conditions: hot underground rocks, water, and natural porosity/fractures (found in places like Iceland or

All press reviews · 05. November 2025

Aargau’s geothermal cadastre reveals: electricity could be generated from geothermal energy here in future The canton of Aargau has assessed its geothermal potential and made the findings available online for the first time. Opportunities are evident particularly in the south of the canton – including for electricity generation. Potential for electricity from geothermal energy in Aargau The canton of Aargau wishes to promote the use of geothermal energy and move beyond the current focus on heat

All media releases · 03. October 2025

Geo-Energie Jura SA (GEJ) has successfully completed the exploration phase of the Haute-Sorne (Canton Jura, Switzerland) geothermal pilot project. Tests conducted in July in the deep borehole confirm that rock permeability can be increased sufficiently to create a usable geothermal reservoir—while complying with the prescribed seismic thresholds. Geothermal energy is available around the clock, produces no CO₂ emissions, and is an ideal complement to other renewable energy sources. The reassessm

All press reviews · 29. September 2025

The article highlights a technological irony: whilst the major tech corporations in Silicon Valley (Google, Meta, Amazon) are desperately searching for clean, large-scale energy sources for their AI data centres, they are relying on a technology that was largely co-developed in Germany – but which has almost disappeared into obscurity there, both politically and socially. The key message: ‘Deep Tech’ from Germany fuelling the US boom The article describes EGS technology (Enhanced Geothermal Syst