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Offshore electricity substation installed in ‘milestone’ for new wind farm

An offshore electricity substation has been installed (NnG Offshore Wind Ltd/PA)
An offshore electricity substation has been installed (NnG Offshore Wind Ltd/PA)

The first of two electricity substations has been installed at the site of a wind farm off the coast of Fife in a “significant milestone” for the project.

It means the Neart na Gaoithe (NnG) wind farm can be fully connected to the National Grid ahead of its 54 turbines being installed in 2023.

NnG covers an area of about 105 square kilometres and will supply enough low-carbon electricity for around 375,000 homes.

Once the turbines are installed, the power they generate will be exported by NnG’s two offshore substations to its onshore substation, where the energy will access the National Grid’s entry point at Crystal Rig in the Lammermuir Hills, East Lothian.

Matthias Haag, NnG project director, said: “Having the first of NnG’s two offshore substations in place is a really important moment for everyone involved in the construction of this major offshore development for Scotland.

Construction vessel
Huge construction vessels helped install the substation (NnG Offshore Wind Limited/PA)

“A lot of hard work has gone into preparing the seabed and installing two foundation jackets to help us reach this significant milestone and I’m pleased that we can now continue with connecting the platform to the grid and undertaking further foundation works.

“It’s an exciting time for NnG as construction continues both offshore and onshore and we are on track for our first turbines to be operational in mid-2023, with completion of the entire wind farm scheduled for 2024.”

The “rock socket” seabed supports for the foundation jackets were prepared last year by the Saipem 7000 and Saipem 3000 construction vessels in a water depth of about 50 metres, to anchor the offshore substation to the seabed.

Saipem used what is said to be the largest offshore wind installation vessel in the world, the Heerema Sleipnir, to place the 1,100-tonne topside platform on to one of the two foundation jackets.

NnG, jointly owned by EDF Renewables and ESB, is being constructed 15.5km off the coast of Fife.

It will have a capacity of around 450MW and will offset more than 400,000 tonnes of CO2 emissions each year.