Landsvirkjun

Laxá Power Station II

The 9 MW Laxa II Station utilizes the lower head in the same canyon as Laxa I. The river is dammed 300 m below the Laxa I powerhouse. From there, the water is directed through a wooden penstock to a surge tank, then through a steel pipe to the powerhouse, over a total distance of 380 m. The head measures 29 m and the station is equipped with one generating unit, commissioned in 1953.

9 MW
Hydropower
9 MW
9 MW
9 MW
Installed capacity
1 x 9 MW
1 Francis turbines
78 GWh p.a.
Generation capacity
29 m
Total head
1953
Brought online

Catchment Area

Laxá Stations

The three Laxá Stations harness a 70 m head on an 1800 m strecth of River Laxá to produce a total of 27.5 MW of electricity. The inflow to Lake Mývatn is mostly underground, through layers of lava, largely immune from seasonal fluctuations and ideal for harnessing hydropower.

Laxá I and II are low head hydro stations that harness the natural flow of River Laxá. Station III, the latest addition, utilizes the same head as Laxá I but runs its water through a tunnel to the power station, 60 metres inside the rock. The town of Akureyri and the Icelandic Government built the Laxá Stations which joined Landsvirkjun in 1983.

Specifications

Vatnasvið: 1.550 km2
Meðalrennsli til virkjana: 43 m3/s
Fallhæð
Laxá I: 39 m
Laxá II: 29 m
Laxá III: 39 m
Afl
Laxá I: 5 MW
Laxá II: 9 MW
Laxá III: 13,5 MW
Orkuframleiðsla: 180 GWst á ári
Lengd jarðganga í Laxá III
Vatnsvegir: 850 m
Þjónustugöng: 190 m
Hönnun
Laxá I: Árni Pálsson, verkfræðingur
Laxá II og III: Verkfræðistofa Sigurðar Thoroddsen hf.
Helstu verktakar
Laxá I: Højgaard og Schultz, Danmörku
Laxá II: Stoð hf. (Laxá II)
Laxá III: Norðurverk haf. (Laxá III)
Framleiðendur hverfla og rafala
Laxá I, vél 1: Kværner Brug, Noregi (hverfill)
  A/s Titan, Danmörku (rafali)
Laxá I, vél 2: James Leffel & Co, Bandaríkjunum (hverfill)
  Westinghouse, Bandaríkjunum (rafali)
Laxá II: James Leffel & Co, Bandaríkjunum (hverfill)
  Westinghouse, Bandaríkjunum (rafali)
Laxá III: Escher Wyss, Þýskalandi (hverfill)
  ASEA, Svíðþjóð (rafali