Key Figures and Specifications
Installed capacity: (2x30 MW) 60 MW
Energy production: (60 MW) 480 GWh
At full capacity the station utilizes 110 kg/sec of 7.7 bar saturated high-pressure steam and 36 kg/sec of 2.2 bar saturated low-pressure steam.
Main gas compounds in geothermal steam:
Carbon dioxide (CO2) 90-98%
Hydrogen sulphide (H2S) 2-10%
By autumn 1999, a total of 34 wells had been sunk. In all there are 15 high-pressure wells and 5 low-pressure wells, while 14 of the boreholes are unserviceable or unutilized. The deepest borehole measures 2,222 metres.
Original design:
Power station: VST hf., Rafteikning hf. and Rogers Engineering Co. Inc.
Steam utility: VST hf. and Virkir hf.
Architects: Manfred Vilhjálmsson and Thorvaldur Thorvaldsson
Geophysical research and exploratory drilling:
Orkustofnun (National Energy Authority of Iceland)
Manufacturers of equipment:
Turbines, transformers and machinery: Mitsubishi Heavy Industries, Japan
Cooling towers: Marley, USA
Substations: EGB, Austria
Low-voltage equipment: Alstom, France
Main contractors 1975-1977:
Groundwork and construction: Snidill hf., BSHSTh, Midfell hf.
Drilling: Icelandic State Drilling Company
Metalwork and machine installation:
Slippstödin hf., Hédinn/Stálsmidjan/Hamar and Stjörnu-stál hf.
Electrical installations:
Rafafl hf.
Installation of turbine 2 and steam utility expansion 1996-1998:
Design and project supervision: Verkfrædistofa Gudmundar og Kristjáns hf. and Rafteikning hf.
Main contractors:
Drilling: Icelandic Drilling Company Ltd.
Mechanical and electrical equipment: Mitsubishi Heavy Industries, Alsthom
Machine installation and mounting:
Vélsmidjan Gils, Vélsmidjan Grímur, Snidill
Electrical installations: Ljósgjafinn, Rafeyri, Rafidn and Öryggi