Blåsjø - Norway's largest dam complex

Suldal is one of the major power municipalities in Norway and is home to a number of power projects and power stations. The Røldal-Suldal Kraft in the 1960s was Norway's largest industrial project at the time, and the Ulla-Førre development in the 1980s was the largest hydroelectric development in Northern Europe. Today, the municipality accounts for approximately 8 percent of the country's total power production. A visit to Suldal is therefore not complete without gaining insight into our hydropower history.

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Blåsjø is located in the Suldal Mountains and is Norway's largest reservoir for energy storage. The reservoir is held in place by 11 small and large dams. At its highest regulated water level, Blåsjø covers an area of over 82 square kilometers. The Storvass Dam, Oddatjørn Dam, and Førrevass Dam are among the largest dams belonging to the Blåsjø Reservoir. Storvass Dam is Norway's largest earthfill dam, Oddatjørn Dam is the tallest earthfill dam in Norway, while Førrevass Dam is Norway's largest concrete dam with a length of 1270 meters and a height of 90 meters.

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To reach Blåsjø, you need to turn off from Rv13 and drive past Gullingen Turistsenter, further into the mountains. The road is usually open between July and October but closes when snowfall occurs.

Blåsjø is also well-suited for cycling trips along good roads in the mountains. Read more about this under 'Cycling'. If you wish to explore more of the beautiful mountain landscape, you can visit the tourist cabin 'Stranddalen'. Read more about this under 'Hiking'.

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Due to considerations for the wild reindeer and its migration, motorized traffic to Storvass Dam is not allowed. Small disturbances here can cause significant harm. We recommend visiting Førrevass Dam instead. Read more about efforts to protect the wild reindeer on svr.no.

Please note that there is a toll gate at the entrance to Blåsjøvegen, near the ski lift, which records the license plate upon passing. For single passes, payment can be made online within the next 48 hours. Otherwise, an invoice will be sent by mail. Season passes can also be purchased. All payments are made via www.youpark.no, whether purchasing a season pass or paying for single passage.

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Well-equipped: There is a road all the way to Oddatjørn Dam and Førrevass Dam, with parking spaces. Asphalted and gravel open areas provide ample room to access the dams.