Seagreen incurs increased costs due to delays

4C Offshore | Tom Russell
By: 17/11/2022 SSE

SSE has revealed that completion of the 1.1 GW
Seagreen project, Scotland’s largest and the world’s deepest fixed based offshore wind farm, has been pushed back several months.

The project is a joint venture by SSE Renewables (49%) and TotalEnergies (51%). SSE Renewables continues to lead the development and construction of the project and will operate it on completion for its expected 25-year lifetime.

The delay was reported in in SSE's half year statement which outlined that £57m of costs were incurred directly related to delay of the Seagreen construction project.

Despite a
crane failure on an installation vessel earlier in the year and subsequent poor weather, progress continues to be made with 78 jackets and 65 turbines installed as at 11 November 2022. The offshore substation platform has been installed and, following first power in August, 27 turbines are now exporting energy. All onshore cabling works and export cable installation is progressing as planned.

Due to challenging weather conditions over the first half of the financial year and delays encountered with the S7000 installation vessel subcontracted to the project, Seagreen is expected to be completed in summer 2023, assuming normal weather and planned vessel availability.

first generated power to the UK national grid in August. When fully operational, the wind farm is expected to generate around 5,000 GWh of renewable energy annually.

Last month, Seagreen's project developers announced that plans to boost the capacity of the offshore wind farm, Scotland’s largest and the world’s deepest fixed based offshore wind farm, have been given the green light by Scottish Ministers. Seagreen filed its Section 36C (S36C) application to take advantage of developments in offshore turbine technology and maximise the wind yield of the remaining 36 consented, but not yet constructed, turbines.

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