Geothermal Power Plants in Iceland

Bjarnarflag
Location: Northeast
Operator: Lansvirkjun
Configuration: 1 X 3 MW
Operation: 1969
T/G supplier: BTH, ASEA
Quick facts: Bjarnarflag geothermal station in the Lake Mývatn area was the first of its kind in Iceland. In addition to generating 18 GWh of electricity annually, Bjarnarflag provides steam for the local district heating system and industrial use, as well as geothermal water for the nature baths at Lake Mývatn.

Photograph courtesy of Landsvirkjun
Posted 14 Nov 2012

Hellisheidi
Location: Capial Region
Operator: Orkuveita Reykjavikur
Configuration: 2 X 40 MW
Operation: 2006
T/G supplier: MHI
EPC: MHI, Balcke-Durr, Istak
Quick facts: This site is south of Hengill volcano on the Hellisheidi Plateau in southwest Iceland about 20km east of Reykjavik. When fully built out, the power station will have an estimated output of 300 MW electricity and 400 MW of heat. First drilling in the area began in 1985. Two more units were ordered in May 2006 and completed in 2008.

Photograph courtesy of Orkuveita Reykjavikur
Posted 6 Dec 2006

Northeast
Location: Iceland
Operator: Lansvirkjun
Configuration: 1 X 2 MW Kalina
Operation: 2000
T/G supplier: ??
EPC: Recurrent Engineering, Verkis
Quick facts: This a Kalina cycle power plant. The working fluid is an ammonia/water mix.

Photograph courtesy of Landsvirkjun
Posted 19 Feb 2005

Krafla
Location: Northeast
Operator: Lansvirkjun
Configuration: 2 X 30 MW
Operation: 1977-1997
T/G supplier: MHI
Quick facts: Large-scale volcanic eruptions only 2km from the site were an early problem during construction. In 1996, a decision was made to install a second T/G set and borehole drilling with improved technology began immediately. 33 boreholes have now been drilled for the Krafla station and, on average, about half are used at any time.

Photograph courtesy of Landsvirkjun
Posted 5 Feb 2005

Nesjavellir
Location: South
Operator: Orkuveita Reykjavikur
Configuration: 4 X 30 MW CHP
Operation: 1998-2005
T/G supplier: MHI, Melco
Quick facts: The Nesjavellir power station is 20km from Reykjavík at 177m elevation. Geothermal drilling by a local landowner began in 1946 with hot water utilized for space heating. Reykjavík District Heating bought the site in 1964 and later completed 22 boreholes from 1 to 2km deep with measured temperatures reaching 380°C. Construction of a heating plant began in early 1987 and was completed in 1990. By 1995, five new boreholes had been completed with hot water flows reaching 840l/sec, or about 150 MWt. The first steam turbine was put online in 1998 and new holes were bored to support additional power generation. This large geothermal plant welcomes 15,000 visitors per year.

Photograph by Gretar Ivarsson and courtesy of Orkuveita Reykjavikur
Re-posted 14 May 2008

Reykjanes
Location: Southern Peninsula
Operator: Hitaveita Sudurnesja HF
Configuration: 2 X 50 MW CHP
Operation: 2006
T/G supplier: Fuji
EPC: Sumitomo, Enex, Eykt
Quick facts: This plant on the Reykjanes peninsula (the "smoking peninsula") uses steam and brine from a reservoir at 290 to 320C, which is extracted from 12, 2,700m deep wells. This is the first time that geothermal steam of such high temperature has been used for power generation. The brine is extracted and piped into a steam separator. From there, the separated steam at 19bar passes to a steam dryer and then into the steam turbines. The plant is close to the ocean and uses once-through cooling with seawater.

Photograph courtesy of Hitaveita Sudurnesja
Posted 13 Jun 2006

   
 

Svartsengi
Location: South
Operator: HS Orka hf
Configuration: 2 X 1 MW, 1 X 6 MW, 7 X 1.2 MW, 1 X 30 MW, 1 X 33 MW
Operation: 1979-2008
T/G supplier: AEG, Fuji, Ormat
Quick facts: Drilling in the Svartengis area began in Nov 1971. Three wells 250-400m used for hot water production in the thermal energy exchange plant, which was built in 1976. Immediately after the utilization of these steamholes, the separated waters created a lagoon which today is now more famously called Blue Lagoon. The Svartengi power plant has been build in phases and the current capacity is 75 MWe and about 150 MWt. The plant itself is on lava which erupted in 1226.

Photograph courtesy of Iceland GeoSurvey
Posted 14 Nov 2012

 

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 14-Nov-2012

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