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Blöndustöð Hydropower Plant

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The Blöndustöð Hydropower Plant in northern Iceland was commissioned in 1991 and stands as one of the region's most significant energy projects. The facility harnesses the power of the glacial river Blanda and its tributary Svartá, which are dammed in the highlands to form the 25-square-kilometer Blöndulón reservoir. A technical highlight of the plant is its underground construction: the powerhouse is located approximately 200 meters below the surface and is reached via an 800-meter-long access tunnel. With an installed capacity of 150 megawatts provided by three Francis turbines, the station meets a substantial portion of the electricity demand in the north and west of the country. Water drops from an impressive height of 287 meters through vertical pressure shafts carved into the rock before driving the turbines. While the project's construction was initially met with environmental concerns, the reservoir has since provided new nesting grounds for various bird species. Today, Blöndustöð is an integral part of the national power grid, ensuring supply stability for remote rural communities.
- Location: Iceland
- Nearby: Sauðárkrókur (39 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | -6 | -6 | -5 | -2 | 1 | 6 | 8 | 7 | 4 | -1 | -4 | -6 |
| Rain mm | 96 | 85 | 88 | 81 | 74 | 62 | 87 | 92 | 114 | 110 | 104 | 103 |
📋 Practical info
Geography
Facts
- The power plant was officially commissioned in 1991.
- The total installed capacity of the facility is 150 megawatts.
- The powerhouse is situated 200 meters beneath the surface.
- It utilizes a substantial hydraulic head of 287 meters.
- The Blöndulón reservoir covers an area of 25 square kilometers.
- It was the first major hydropower plant in northern Iceland.
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Frequently asked questions
Where is the Blöndustöð power plant located?
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Blöndustöð Hydropower Plant: where is it located?
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Blöndustöð Hydropower Plant: why is it worth visiting?

























