Sigalda Power Plant

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Quick Summary

Location
64°10'23"N
019°07'37"W
Country
 Iceland
Categories
  • Nature
Rating
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Description

Sigalda Power Plant (Icelandic: Sigöldustöð [ˈsɪːɣœltʏˌstœːθ]) is located on the southern Highlands of Iceland near Torisvatn (Icelandic: Þórisvatn), the biggest Reservoir in Iceland, around 160 km east from Reykjavík, among Hrauneyjalón and Krókslón reservoirs. It was officially launched early 1978. This power plant is the newest of six other hydroelectric plants (Búrfell, Búðarháls, Vatnsfell, Sultartangi, Hrauneyjafoss). Its construction was very quick, as has created demand for more hydropower plants to meet electricity needs in the country. Sigalda with Tunhnaau river is at the top of the canyon on Sigalda hill.

Details

Construction of the Sigalda Hydroelectric Power Station began in 1978, and the station’s three 50-MW turbines . The Sigalda Station is linked into the national grid with 220 kV transmission lines to the Sultartangi, Hrauneyjafoss and Vatnsfell Stations, as well as a 132-kV line to southeast Iceland. Together the installed capacity measures 150 МВт and are able to produce 650 GWh p.a. with a flow rate of 230 m³/s . The Sigalda Dam dams the Tungnaá River at the top of the canyon above Sigalda Hill, where it forms Krókslón, a 14 km2 reservoir. The rock-fill dam is 925 m long, clad with asphalt, and 40 m tall at its highest point. The water is carried 1 km through an intake canal from Krókslón Reservoir to the western edge of Sigalda Hill. Three pressure shafts, 216 m long and 4.3 m in diameter, run to the powerhouse north of the old riverbed, in part buried inside the Sigalda hillside. The harnessed head is 74 m. A 550 m tailrace canal leads from the powerhouse into the Hrauneyjafoss Reservoir.
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