- LOCATION: VELIKA CIGLENA, BJELOVAR, CROATIA
- STATUS: IN OPERATION SINCE DECEMBER 2018
- APPLICATION: GEOTHERMAL
- CUSTOMER: GEOEN
- DESCRIPTION: POWER ONLY
- MODEL: CUSTOM MADE
- POWER: 17.5 MWe
- WATER TEMPERATURE: 170 °C
- One of the largest ORC turbines in the world
MB Holding (majority share-holder of Geoen) was founded in 1968 in the southeast part of Turkey, and operates in many fields including energy, building construction, construction of greenhouses and textiles. MB Holding is the first pioneering geothermal developer that implemented a binary plant in Turkey.
The region of Velika Ciglena is situated in Bjelovar subdepression, the north east of Croatia. The reservoir was discovered in 1990 by INA-Naftaplin, during an underground exploration for oil. The oil was never found, instead, a promising potential for geothermal energy was discovered.
The Velika Ciglena project, exploits steam and hot water at 170°C to produce electricity to feed the local power grid. Turboden designed and manufactured a unique single turbine of 17.5 MW electrical power. The ORC turbogenerator with a 5-stage axial turbine, optimizes the performance with a rotation speed of 1500 rpm. Thanks to the flexibility of the ORC system, the plant grants a highly efficient behavior in all the operation conditions.