New sea cables in Oslofjorden secure power supply to 2.5 million people

Photo: Statnett

During the past three years, Statnett has replaced two sea cable systems in Drøbaksundet with new 420 kV plants. Today, the last facilities between Filtvet and Brenntangen were put into operation.


One of Eastern Norway’s main power connections

“These cable systems are one of Eastern Norway’s main power connections,and largely help secure the power supply to Greater Oslo, especially on the coldest winter days,” said Statnett’s Elisabeth Vardheim, Executive Vice President.

First cable system between Solberg and Brenntangen completed last summer.

The two cable systems were from 1958 and 1975 respectively.”The cables have provided safe power supply for 60 years but were ripe for replacement,” explains Vardheim.

1200 tons of cable has been recycled

Before the new cables were installed,1200 tonnes of existing cable were recycled,of which 230 tonnes were copper.14 new cables replace the old ones and ensure
the power supply to 2.5 million people in Eastern Norway.

“At the same time as we ensure the power supply, we have been committed to minimising the damage to nature.The old stations have been demolished and the landfills filled up so that the area along the fjord becomes more accessible to the public,” said Vardheim.

With the commissioning of the last sea cable system in Drøbaksundet, all Statnett’s sea cable connections in Oslofjorden have been replaced. The sea cable system that crosses the south side of Bastøy was put into operation in 2013.


© NTB scanpix / #Norway Today