Swedish energy group Vattenfall AB is planning to deploy a high-voltage, direct-current transmission line to connect its planned 1,800-MW Norfolk Vanguard and 1,800-MW Norfolk Boreas offshore wind projects to the U.K.'s national electric grid.
The planned transmission line will avoid the need for cable relay stations near Happisburgh and will utilize a 45-meter onshore cable corridor running from landfall near Happisburgh about 60 kilometers to a substation near Necton, narrower than if alternating-current technology was used.
The wind developer will submit final plans for the Norfolk Vanguard facility to the Planning Inspectorate, a U.K. government agency that oversees infrastructure planning in England and Wales, in June, and the project is expected to go online in the mid-2020s. Final plans for Norfolk Boreas will be submitted separately to the Planning Inspectorate in June 2019.
