«Fjordbyen» needs more electricity

«Fjordbyen» needs more electricity

“Fjordbyen” (Fjord City) is an urban renewal project for parts of Oslo’s waterfront including the area between Frogner and Sydhavn and the current expansion of the Bjørvika area. Hafslund Nett’s remit is to ensure that Fjordbyen has sufficient electricity.

The City of Oslo is making large areas available for urban development including homes, recreation areas and commerce in order to “reclaim” areas of the city around the fjord, to the delight of Oslo’s inhabitants.

Fjordbyen will be home to almost 10,000 new residences and more than 40,000 workplaces. There will also be cultural institutions, shopping centres and businesses, parks, an esplanade and several public attractions. Some of the area will continue to serve as a harbour for various types of ships docking at Oslo.

Fjordbyen will need significantly more electricity than is currently used in the same area, even though arrangements are currently in place to accommodate the most energy-efficient solutions possible. This will mean a strong load increase for Hafslund Nett’s grid. Constructing new infrastructure in Fjordbyen will be extremely demanding. Cables will have to be laid through an extensive roads network, cross railway tracks, pass many new buildings and in some places run in culverts.

The local, often unstable, ground conditions will mean that solid bases will have to be built for grid stations and that cable leads are laid in reinforced ducts. Grid stations and other visible equipment will have to be adapted to architects’ requirements for aesthetics and location.

On environmental grounds ships anchored at harbour for more than two hours will be required to turn their engines off. As the ships generate their own electricity, in future they will have to get their electricity from land. Hafslund Nett has established provisional onshore power supplies for Color Line ships anchored at the Filipstad terminal. The power requirement for these ships is around 4.5 MW (4,500 kW). The electricity will be delivered from Hafslund Nett’s 11 kV distribution grid. Electricity sourced from land will result in a great improvement in air quality, and also represents an important local climate measure. Land-based electricity will reduce emissions of CO2 corresponding to the annual CO2 emissions of 1,700 cars, and will also be gradually introduced at Akershuskaia, Vippetangen and Revierkaia. Here, Oslo Harbour has indicated a total power requirement of as high as 25 MW.

Hafslund Nett is set fair and will closely follow the construction of Fjordbyen until its scheduled completion date in around 2020.