Slovak Republic - Direct Uses




individual space heating



District heating



Greenhouse heating



fish farming



bathing and swimming



 geothermal heat pumps





Total thermal installed capacity in MWt


Direct use in TJ/year


Direct use in GWh/year


Capacity factor



Country Update: Geothermal wells are located mostly in the intra-mountain depressions or in lowlands bordering the Slovak territory in its southern part. Today, 27 hydrogeothermal areas or structures have been identified in the country. Geothermal waters were proved by 171 geothermal wells with depths of 9 to 3,616 meters. Three new wells were drilled and put into operation in the last five years. The first geothermal district heating plant with a capacity of 8 MWt was put on line in Galanta in 1996. Geothermal waters are also widely used for recreational purposes, mostly in very popular aquaparks in many places in Slovakia. A total of 38 localities use geothermal water for recreational purposes, mainly in swimming pools. Space heating, greenhouses and fish farming also use geothermal waters in the country. Geothermal waters in Sered and Sals are used for district heating, waters in Besenova and Vyhe for bathing, and for greenhouse heating in Nesvady. Other uses include heating of hotels, sport hall, and in Novaky-Kos it is utilized for heating of miner’s dressing rooms and air heating in the brown coal mine. A total of 61 locations throughout the country use geothermal water for heating. (Fendek and Fendekova, 2015).

Taken from: John W. Lund and Tonya L. Boyd
Published in Direct Utilization of Geothermal Energy 2015 Worldwide Review

Total thermal installed capacity in MWt:132.2
Direct use in TJ/year3,067.2
Direct use in GWh/year852.1
Capacity factor0.74

Geothermal direct-use is distributed in eight counties in the country with Nitra County (southwest of the center of the country) having the highest number of locations (19), and Trnava Country (western Slovakia) having the highest amount of thermal energy used. The smallest number of uses is in Kosice Country (eastern Slovakia) with five locations reported; however, this area has the highest potential for geothermal use in the country, including the generation of electricity.

Greenhouse heating is reported in 11 locations, two of which receive heat at the end of a cascaded system. Vegetables and cut flowers are the main products grown in these greenhouses. There are 19 installation using geothermal energy for individual space heating and two locations for district heating. The main district heating system is for heating of blocks of flats and a hospital in Galanta.

There are 59 locations using geothermal water for swimming pools, both outside and inside. For some, the combined utilization (cascaded use) of the energy is for greenhouse heating, district heating and finally for bathing – in Topolniky and Podhajska. Two locations use geothermal energy for fish farming. There are also nine locations using geothermal heat pumps with a total of 16 units installed.

The various direct-uses include:

16.7 MWt and 381.1 TJ/yr for individual space heating;
10.8 MWt and 232.0 TJ/yr for district heating;
17.6 MWt and 461.1 TJ/yr for greenhouse heating;
11.9 MWt and 271.0 TJ/yr for fish farming;
73.6 MWt and 1,708.5 TJ/yr for bathing and swimming;
1.6 MWt and 13.5 TJ/yr for geothermal heat pumps.

The total for the country is 132.2 MWt and 3,067.2 TJ/yr. 

Taken from the paper by John W. Lund, Derek H. Freeston, and Tonya L. Boyd: "Direct Utilization of Geothermal Energy 2010 Worldwide Review"; published in Proceedings of the World Geothermal Congress 2010, Bali, Indonesia, 25-29 April 2010