Ulla-Førre is a

hydropower Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a w ...

complex in

Southern Norway Southern Norway ( no, Sørlandet; lit. "The Southland") is the geographical region (''landsdel'') along the Skagerrak coast of southern Norway. The region is an informal description since it does not have any governmental function. It rough ...

. It is situated along the borders of the municipalities of

Suldal Suldal is a municipality in the northeast corner of Rogaland county, Norway. It is located in the traditional district of Ryfylke. Since 1965, the administrative centre of Suldal is the village of Sand i Ryfylke (prior to that it was the villa ...

and

Hjelmeland is a municipality in Rogaland county, Norway. It is located in the traditional district of Ryfylke. The administrative centre of the municipality is the village of Hjelmelandsvågen. Other villages in the municipality include Fister, Årdal, ...

(in Rogaland county) and

Bykle Bykle is a municipality in Agder county, Norway. It is located in the traditional district of Setesdal. The administrative centre of the municipality is the village of Bykle. Other villages in Bykle municipality include Berdalen, Bjåen, Br ...

(in

Agder Agder is a county (''fylke'') and traditional region in the southern part of Norway. The county was established on 1 January 2020, when the old Vest-Agder and Aust-Agder counties were merged. Since the early 1900s, the term Sørlandet ("south ...

county),

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the ...

. It has an installed capacity of approximately , and the annual average production is (1987–2006), while its reservoir capacity is about ; at full production, it can last seven to eight months. The complex includes the artificial lake Blåsjø, which is made by dams around above the sea level. The

hydroelectric power station Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined an ...

s in the complex are Saurdal, Kvilldal, Hylen and Stølsdal, operated by Statkraft.

Blåsjø

Blåsjø is the tenth largest lake in Norway by area. It is located in the

municipality A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...

of Bykle in

county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

and the municipalities of Hjelmeland and Suldal in Rogaland county. The lake is about west of the village of Bykle. It has a surface area of . Its surface swings between above sea level depending on seasonal weather and power consumption, and it has a shoreline of about . At the highest regulated water level, Blåsjø contains of water.

Kvilldal Hydroelectric Power Station

The Kvilldal Power Station is a located in the municipality of Suldal. The facility operates at an installed capacity of , making it the largest power station in Norway in terms of capacity.

Statnett Statnett is a Norwegian state owned enterprise responsible for owning, operating and constructing the stem power grid in Norway. The company has its headquarters in Oslo, Norway. Statnett also owns 30% of the Nord Pool Spot along with other Nor ...

plans to upgrade the western grid from 300 kV to 420 kV at a cost of , partly to accommodate the

North Sea Link The North Sea Link is a 1,400MW high-voltage direct current submarine power cable between Norway and the United Kingdom. At it is the longest subsea interconnector in the world. The cable became operational on 1 October 2021. Route The cable ...

cable from Kvilldal to Blyth, UK.

Saurdal Hydroelectric Power Station

The Saurdal Power Station is a hydroelectric and

pumped-storage Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential ...

power station located in the municipality of Suldal. The facility operates at an installed capacity of (in 2015). The average energy absorbed by pumps per year is (in 2009 to 2012). The average annual production is (up to 2012).

Hylen Hydroelectric Power Station

The Hylen Power Station is located at the bottom of

Hylsfjord Hylsfjorden or Hylsfjord is a fjord in the municipality Suldal in Rogaland county, Norway. The long fjord runs from the small area of Hylen to the west. It ends just north of the village of Sand where it joins the Saudafjorden and together they ...

in Suldal. It operates at an installed capacity of , with an average annual production of . The plant exploits water through a tunnel from the lake

Suldalsvatnet Suldalsvatnet ( en, Lake Suldal) is the sixth-deepest lake in Norway. The deep lake lies in the municipality of Suldal Suldal is a municipality in the northeast corner of Rogaland county, Norway. It is located in the traditional district o ...

References

External links

Brochure
* {{DEFAULTSORT:Ulla-Forre Hydroelectric power stations in Norway Dams in Norway Pumped-storage hydroelectric power stations