Geothermal
projects
in Croatia

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EFLA Engineering has been working on geothermal projects in eastern Croatia since autumn 2010, for a geothermal company owned by the city of Slatina and several investors. The area is on the southern edge of the Pannonian Basin.where thick sediments were deposited on top of fractured bedrock that lies between the Karpata and Dinarik mountains, east of the Alps. The crust in the area is unusually thin, elevated the geothermal gradient and thus increasing the possibility for the existence of a geothermal system in this geological environment. During the Cold War, as elsewhere in the Balkans, this area was drilled in a search for oil and gas. Such resources occur widely in the region. Geothermal heat was frequently encountered during drilling. At the time, people were not prepared to make use of geothermal energy and most of the holes which were not used for oil production were closed. Today, with climate warming and soaring energy prices, there is considerable interest in harnessing geothermal heat in Croatia and elsewhere in the Balkans.
EFLA is very familiar with what options there are for harnessing geothermal energy in the Balkans. EFLA´s partner in Croatia is EIHP (The National Energy Authority of Croatia).


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Hafsteinn Helgason optimistically waiting for his hot water!

 

For the project in Slatina, Croatia, ISOR is a subcontractor for EFLA and is responsible for geophysical measurements. The measurements cover an area of almost 70 km2. Temperatures in the range of 70 - 180 °C have been measured, for up to 5 km deep boreholes. It is hoped that it will be possible to build a power plant in the area for generating electricity. Thermal energy from the plant could be sold for industrial and domestic heating. The Geothermal and Business Development teams at EFLA anticipate numerous geothermal projects in the Balkan area in coming years.

 

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Sigurður H. Markússon, Alojz Gertliher og Ómar Bjarki Smárason in Slatina in october 2010

The Geothermal and Business Development teams at EFLA are also working on geothermal projects in several locations around the world. These projects are at various stages, ranging from initial surface research and environmental assessment, to advice about the location and drilling of production holes for electricity generation and direct space-heating/industrial use.

 

Top image shows the geophysical team working on MT measurements in the field

 

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