World's largest wind farm reaches new milestone

One of the largest offshore wind projects in the world moved a step closer to delivery with SSE Renewables successful bid into the Allocation Round 7 process. Their Berwick Bank project in the Firth of Forth secured a 1,380MW allocation in the latest round for Phase B of the 4,160MW project. 

SSE Renewables was successful in being awarded what is now a 20-year Contract for Difference (CfD) allocation, previous CfDs were for 15 years, for this first phase.

The contract for Berwick Bank B marks the only successful CfD award to a Scottish fixed-bottom offshore wind project in this auction round and follows the decision by the Scottish Government in July 2025 to grant a consent order for the full project’s offshore wind farm array.

Berwick Bank B will receive the guaranteed strike price of £89.49/MWh for 1,380MW of offshore renewable energy capacity, based on 2024 prices, but annually indexed since then for CPI inflation, for the contracted low carbon electricity it will generate for a 20-year period.

SSE will now progress Berwick Bank B towards a final investment decision expected in 2027.

Located in the outer Firth of Forth around 38km east of the Scottish Borders coastline, SSE’s Berwick Bank Wind Farm is targeting the delivery of 4.1GW of offshore wind capacity in total across three roughly equal phases.

Following this contract success for Berwick Bank B, the remaining two A and C phases of Berwick Bank are available for entry into upcoming auction rounds, with the UK’s eighth CfD allocation round expected towards the end of this year.

If built to its full potential capacity, Berwick Bank could become the world’s largest offshore wind farm on completion. The full scale of Berwick Bank makes delivery of the project critical to boosting Scotland’s renewable capacity by nearly 25%, to delivering value to consumers from lower priced offshore wind, and to meeting the UK’s Clean Power 2030 target. The project could also inject around £8 billion into the UK economy and support over 9,000 UK jobs, driving growth alongside decarbonisation.

Martin Pibworth, Chief Executive of SSE plc, said:

“We are delighted Berwick Bank B has been successful in AR7 and has secured a CfD for 1.4GW of essential new low-carbon power for the UK at a competitive price for consumers. This milestone enables us to advance the project towards a final investment decision and reinforces our commitment at SSE to delivering sustainable growth and long-term value for society, for consumers and for our shareholders.

“If built to its full projected capacity of more than 4GW, Berwick Bank Wind Farm can rank among the largest offshore wind projects globally. It would represent the single most significant contribution toward achieving the Scottish and UK Governments’ offshore wind targets and can accelerate the delivery of homegrown, affordable, and secure clean energy to UK consumers from excellent Scottish offshore wind resources.”