Reproduced from Ordnance Survey digital map data © Crown copyright 2014.

Reproduced from Ordnance Survey digital map data © Crown copyright 2014.

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East Anglia Offshore Windfarm (EAOW) THREE and FOUR

East Anglia, East Anglia Offshore Wind Limited & a joint venture between Scottish Power Renewables and Vattenfall

In 2014 OPEN was appointed to undertake the Seascape, Landscape and Visual Impact Assessment (SLVIA) for the East Anglia 3 and 4 offshore wind farms and associated transmission infrastructure. Due to the long distance offshore of the proposed wind farms, the main focus of the SLVIA was on the effects of the onshore transmission infrastructure, including converter stations, near the town of Bramford, and 37km of underground cables connecting the offshore wind farms to the convertor stations.

The SLVIA included assessment of the impacts resulting from the landfall, onshore cable route and converter stations during construction, operation and decommissioning. The SLVIA required an understanding of the technical aspects of the development proposals involved at each stage. The SLVIA included the consideration of different cumulative scenarios with other phases of the East Anglia offshore developments and their grid connections/converter stations.

OPEN prepared a written SLVIA chapter and visualisations of the onshore convertor stations, and attended public consultation events as part of the SLVIA process.

The application for EAOW 3 is currently at draft ES stage and as a National Strategic Infrastructure Project (NSIP) has been through a review with consultees and the Planning Inspectorate. EAOW 4 will follow a similar process in the near future.