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An overview of Sofia Offshore Wind Farm: Where the project is, what it comprises and how it works.
Onshore Converter Station
Onshore Cable Corridor
Offshore Export Cable
Converter station site
The location of Sofia’s new onshore converter station will be adjacent to the Wilton Complex near the village of Lazenby.
This is where the offshore cables bringing the power generated by Sofia will land, before joining onshore cables to transmit the power to the new converter station.
Offshore export cables
Brand-new cable installation vessel Leonardo da Vinci will install Sofia's export cables, which will carry the power from Dogger Bank 220km to shore.
Sofia will comprise 100 turbines each standing 252 metres tall. That is more than three times the height of Newcastle's tallest building, Hadrian's Tower, at 83m and completed in 2020.
Offshore converter station
At the heart of the wind farm, this is where the power generated by the turbines will be converted to DC for transmission to shore along two 220 kilometre long export cables.
In total more than 360 kilometres of cables will carry power to the converter station. They will be laid by cable-laying vessel Nexus.
In terms of components, the wind farm will comprise 100 turbines, an offshore converter station and hundreds of kilometres of both inter-array and export cables, as well as onshore electrical infrastructure.
A total of 100 turbines will be installed on site. They will be Siemens Gamesa 14MW machines, each standing 252 metres tall, that's just 60 metres less than the UK's tallest building, The Shard.
Each turbine will sit on a monopile foundation that will be securely driven into the seabed. The offshore converter station will sit atop a jacket foundation, also piled into the seabed.
OFFSHORE ELECTRICAL INFRASTRUCTURE
A network of approximately 360 kilometres of inter-array cables will transport power from the turbines to the wind farm’s offshore converter platform. Here, at the heart of the wind farm, the electricity will be converted from 66kV alternating current to 320kV direct current. Two approximately 220 kilometre long export cables - forming a single high voltage direct current circuit - will bring the power from the wind farm to the Teesside coast.
ONSHORE ELECTRICAL INFRASTRUCTURE
Two 7km DC cables - forming a single high voltage direct current circuit - will carry power from landfall to a new converter station adjacent to the Wilton Complex, near the village of Lazenby. A further six 2km AC cables will transmit power to the existing National Grid substation at Lackenby.