Balfour Beatty Wins Contract for Substation to Connect Three Dogger Bank Wind Farms

Balfour Beatty has been awarded a contract by National Grid to deliver the first phase of the Birkhill Wood 400 kV substation in East Yorkshire, which will connect the planned Dogger Bank South East, Dogger Bank South West and Dogger Bank D offshore wind farms to the UK electricity grid.

The contract covers early contractor involvement, including detailed design and enabling works to prepare the site for the main construction phase, which is expected to start in 2027. Enabling works are already underway.

The substation will support the grid connection of the three offshore wind farms, which together are expected to provide enough renewable electricity to power approximately four million homes.

Dogger Bank South East and Dogger Bank South West, each planned to have a capacity of 1.5 GW, are being developed by RWE and Masdar. Both projects secured development consent in May 2026 and contracts for difference (CfDs) in the UK’s Allocation Round 7 in January 2026. Commissioning is expected in 2031 and 2032, respectively, with a final investment decision (FID) targeted for 2027.

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