The European Geothermal Congress 2025 | EGC 2025

6–10 Oct 2025 | Zürich, Switzerland

Green Therma

Private company

greentherma.comCopenhagen, Denmark
7 profile visits

About

At Green Therma, we have developed the Heat4Ever™ solution to tackle today’s heat challenges reliably, efficiently, and with long-term impact. Our solution sets a new standard for harnessing renewable heat from the Earth’s crust, combining a high-performance solution with low operational complexity and eliminating most geological risks.

Heat4Ever™ works by capturing the constantly emitted energy from the Earth’s core and turning it into clean, usable heat at surface level. Safely, reliably, and without interfering with subsurface environments.

The system works by circulating water in a completely closed pipe solution, where the working fluid runs inside the pipes deep underground without entering the underground. As the working fluid moves within the pipe installed in deep hot rock, it absorbs natural heat from the surrounding rock. This energy is brought back to the surface with the innovative DualVac™ technology and can then be utilized for heating homes, buildings, or industrial processes such as horticulture, breweries, campuses, and medical centers.

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Energy production and distribution Domain

Heat productionCooling production

Planning and advice geothermal projects Domain

Geology / HydrologyGeophysics

Component manufacturers and suppliers Domain

Geothermal probes, coils, baskets, etc.

Representatives

Kim Gunn Maver

Chief Geologist

Green Therma