Geothermal in Stargard
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The heart of geothermal: how the installation in Stargard works?

Diorama - technologia w geotermii
Published:
April 29, 2026
Stargard

While the high water temperature is our major asset, its high salinity constitutes a significant technological challenge, requiring special competencies from G-Term Energy. We utilize advanced engineering and materials with the highest resistance to effectively and safely draw energy from such a demanding reservoir. Thanks to this, the specific nature of the local brine does not affect the stability of heat supplies for residents. The process of exploiting the earth's heat is realized in the following optimized stages:

1. Extraction and pre-filtration

Hot brine is drawn from deep aquifers using efficient submersible pumps. Immediately after extraction, the medium flows through a production manifold (unique on a national scale) to a system of bag filters with a filtration precision of 1 micron. This process is crucial because it protects sensitive heat exchangers from mechanical impurities.

2. Heat exchange

Purified geothermal water releases its thermal energy in an advanced plate heat exchanger. Energy is transferred to water circulating in the secondary loop, i.e., the municipal heating network. Geothermal water does not enter the general circulation – it acts exclusively as a carrier (medium) to heat the network water, which is then distributed to consumers.

3. Final filtration and reinjection

Cooled brine, leaving the heat exchangers, passes through a system of cartridge filters with a density of 0.5 microns. This stage ensures ultra-precise purification from the finest particles, which prevents the phenomenon of clogging (plugging the reservoir). Finally, the brine is forced under appropriate pressure back into the injection wells, closing the safe, renewable loop.