Energy institute HRVOJE POŽAR


Possibilities of using the geothermal energy of the City of Zagreb

HUGE - The Croatian Association for Geothermal Energy is organizing a round table on the topic: "Possibilities of using the geothermal energy of the City of Zagreb," which will be held on Wednesday, May 25, 2022, at 11 am in the FORUM cinema in SD Stjepan Radić in Zagreb.

Introductory word: izv. prof. dr. sc. Vladislav Brkić, Dean of RGN Faculty and President of HUGE -
Croatian Geothermal Energy Association.


  • Potentials of geothermal energy in the area of ​​the City of Zagreb, dr. sc. Sanja Živković, EIHP;
  • Geothermal field Zagreb, Vladimir Cazin, dipl. ing. Petroleum Mining Engineer, GPC INSTRUMENTATION PROCESS d.o.o.;
  • Geological perspective of geothermal deposits in ​​the City of Zagreb mr. sc. Željka Sladović, GeoDa Consulting d.o.o;
  • Exploration of production geothermal wells

The City of Zagreb extends above the geothermal reservoir, where at a depth of 700 to 1500 m, there is a geothermal water reservoir with a temperature of 80 degrees Celsius. The first research in the 1960s was related to attempts to find hydrocarbons, but the Stupnik-1 well uncovered a geothermal water deposit in 1964, which was tested in 1977. The Mladost-1 well was drilled in 1980, while in the period from 1984 to 1988 it was drilled through the wells for the needs of the Clinical Hospital Center Novi Zagreb. Mla-2 and Mla-3 wells were drilled at the location of SRC Mladost in 1985 before the Universiade. A total of 15 wells were drilled. They all discovered a deposit of geothermal water in rocks made up of lithotomic limestones and dolomites. The wells were found to have significant opportunities for Zagreb to use geothermal energy. The goal of the HUGE Association is to present the geothermal potential and
emphasize the use of 'green' geothermal energy.


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