The substation, which will be located near National Grid’s Walpole facility, is anticipated to be completed in 2016.
It will have all the equipment needed to transmit power from the wind farm to the national grid network.
The wind farm will be situated about 17 miles off Blakeney Point on the North Norfolk Coast. It will generate enough energy for more than 400,000 homes in the UK.
Murphy managing director North John Murphy said: "Renewable energy is crucial to the UK – and we’re pleased to be a part of this project which will support both future economic growth and more resilient infrastructure.
"We look forward to working closely with client Dong Energy to safely and innovatively address the challenges that lie ahead and achieve sustainable efficiencies."
Dong Energy acquired the Race Bank project for £50m from Centrica in December 2013. The development has all major consents from UK authorities for the construction and operation of the wind farm.
The company also has other offshore wind projects in the UK, which include West of Duddon Sands, Westermost Rough, Hornsea Project One, Walney Extension and Burbo Bank Extension.
The offshore wind installed capacity in the UK is expected to reach around 6GW by 2016 and about 10GW installed by 2020, delivering between 8% and 10% of the country’s electricity annually.
Image: J. Murphy & Sons will build an onshore substation for the Race Bank offshore wind farm development project. Photo: Courtesy of DONG Energy A/S.
