Project Košice
From a depth of over three kilometers, highly mineralized water with a temperature of over 130 degrees Celsius rises under its own pressure. After slight treatment, it enters the transfer station, where the geothermal water transfers its energy to the circulating medium—treated water.
Geothermal energy will eliminate the need for TEKO to use black coal.
After traveling nearly twenty kilometers, the treated water will deliver heat to Tepláreň Košice (TEKO), which operates the city’s primary heat distribution network.
After cooling down at the transfer station, the geothermal water is pumped into injection wells so that it can be reheated underground.
In the event of higher heat demand in the city than the geothermal system is capable of supplying, TEKO will add energy through its natural gas generators, which allow for flexible regulation in the event of fluctuations in heat consumption.
Geothermal energy reserves
The Ďurkov – Svinica hydrogeothermal structure covers an area of approximately 33.6 km². In the hydrogeothermal reservoir formed by Triassic carbonate rocks, the thickness of the geothermal water collectors from which geothermal energy can be effectively extracted is approximately 200 meters.
The usable amount of geothermal energy in this location represents a maximum thermal output of 35 MWt. The functionality of these underground collectors is currently estimated to be at least forty years.
Our Wells
| Well GTD-1 | Well GTD-2 | Well GTD-3 | |
| Type of well | Reinjection geothermal well – vertical | Production geothermal well – inclined | Reinjection geothermal well – inclined |
| Flow rate (l/s) | 55,62 | 55 | 65 |
| Temperature at wellhead (°C) | 125 | 133,8 | 122,8 – 123,8 |
| Flow rate (l/s) | 0,92 | 1,4 | 2,20 |
| Depth (m) | 3210 | 3084 | 2246 |
| Type of geothermal water | Natrium-chloride type | Natrium-chloride type | Natrium-chloride type |
| Total mineralization of the water (g/l) | 27 – 30,6 | 31,35 | 31,6 – 33 |