Triton Knoll onshore construction works completed

4C Offshore | Tom Russell
By: 07/10/2021 RWE
RWE has completed all the major onshore electrical system construction works for Triton Knoll Offshore Wind Farm. This follows the installation of the final turbine in September.

The works, which commenced in September 2018, involved laying 57km of 220kV underground cable from the project’s landfall location near Anderby Creek to the newly constructed Triton Knoll Onshore Substation near Bicker Fen. A further 1.8km of 400kV cabling was installed to allow connection into the UK national grid at the existing National Grid Bicker Fen Substation.

The offshore wind farm generated its first electricity in February 2021, marking a key milestone for the project partners as it delivered renewable electricity to homes and businesses for the first time. Following the completion of turbine installation, offshore commissioning works are ongoing and, once fully operational, Triton Knoll Offshore Wind Farm is expected to generate green electricity to meet the needs of around 800,000 homes each year.
Julian Garnsey, Project Director for RWE and Triton Knoll, said: “We have worked closely with all our supply chain to ensure that construction progressed safely and efficiently, even during the Coronavirus pandemic. We’d like to thank everyone involved for their dedication to ensuring the safety of all whilst building this nationally significant infrastructure project. We’d also like to thank the local communities and landowners for their understanding and cooperation while we completed the construction works. Land has been handed back to owners ahead of schedule in many locations and reinstatement works are complete, with the vast majority of the land already returned to agricultural use.”

Siemens Energy was responsible for the construction of both the onshore and the offshore substations and the installation of the 400kV cabling.

Phil Manley, project director for Siemens Energy, said: “I’m incredibly proud of the Siemens Energy team who has delivered this vital infrastructure project in challenging times. As a responsible contractor, it has been important to us that the only mark we leave on the landscape is the state-of-the-art substation which will feed the clean electricity generated offshore to the thousands of homes and businesses in the area. We are delighted this work is now complete and the wind farm takes a step towards completion.”

Construction and engineering company J Murphy & Sons carried out the 57km onshore cable installation. Graham Carr, managing director for Energy at Murphy, said: “It’s a great honour to be involved in delivering one of the UK’s most significant infrastructure projects, and the longest cable route of any offshore wind farm ever installed in the UK. This was a great project that demonstrated the skills and capabilities of our teams and help deliver renewable energy safely and reliably to thousands of homes and businesses.”

Triton Knoll is jointly owned by RWE (59%), J-Power (25%) and Kansai Electric Power (16%), with RWE leading both the wind farm’s construction and the long-term operation and maintenance works on behalf of the project partners.
It is is located 32 kilometers off the Lincolnshire coast and features 90 turbines, each one up to 187 metre-tall with blades of over 80 metres long.  

Triton Knoll, RWE is constructing the 1.4 GW Sofia offshore wind farm and is progressing four extension projects in the UK, with a combined potential installed capacity of around 2.6 GW (RWE’s pro rata share: 1.3 GW.) Furthermore, the company successfully bid for two new adjacent offshore sites on Dogger Bank, with a potential total installed capacity of 3 GW, in the Crown Estate’s Offshore Wind Round 4 leasing auction.

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