NOK 370 million
Vamma currently produces 1,350 GWh per year, which corresponds to around 14% of the power consumption in Oslo.
Vammafossen 82, 1816 Skiptvet
Norway’s largest run-of-river hydro power station will become even bigger
Vamma power station is Norway's largest run-of-river hydropower station and Hafslund’s largest power station. In total, the power station takes in water from an area the size of Switzerland. In 2015, it was 100 years since the first two generators were commissioned and the power station has subsequently been developed in multiple stages. The expansion of Vamma power station is one of Europe’s largest run-of-river hydro power expansions since the 1980s with a throughput of 500 m³ per second and installed output of 128 MW.
A tunnel with a cross section of 230 square metres has been blasted 50 metres under the ground, where the actual generator will be located. This will direct the water up to the turbine. The new, modern facility will have a much higher level of efficiency than the old generators. A total of 1,500 cubic metres of water per second will flow through the power station's 12 turbines when the new generator is ready for production.
Green production and modern construction methods
In addition to the increased capacity, following the expansion, Vamma power station will be much less vulnerable to loss of production when renovating and upgrading the current generators.
As one of the first projects of its kind in Europe, work at Vamma power station will be carried out using digital models that contain all information necessary to construct the facility. Traditional drawings are history. Deliveries from the client and consultants comprise 3D models, and these are used in both planning and in established BIM stations and tablets in the field.