General overview of geothermal energy in Bulgaria

Abstract

Low enthalpy geothermal reservoirs have been discovered on the territory of Bulgaria. Most of the geothermal resource has been revealed. About 160 geothermal fields of totally 4600 l/s flow rate were explored. Currently application, hermal water is mainly in balneology, space heating, bottling of potable water and in swimming pools. The total installed capacity amounts to 109.7 MWt and the annual energy use is 1671.43 TJ/year. Major characteristics of geothermal fields have been summarized. Different types of application are discussed and the most perspective geothermal reservoirs selected in terms of their thermal capacity are listed.

Keywords

• thermal water temperature
• flow rate
• thermal capacity
• thermal water use