Triton Knoll tightens up the onshore cabling on forthcoming offshore wind farm

By Grimsby Telegraph | Posted: 28 Mar 2018

Further savings have been made by an upcoming offshore wind farm as it gets to grips with final plans to install the onshore electrical system. 

Triton Knoll, from Innogy, has confirmed a reduction in the number of onshore cable circuits it will need to build in order to transport power from the offshore wind farm to the national grid network.

The changes will help to reduce the overall construction footprint of the project and will help realise planned reductions in costs, while still ensuring the delivery of maximum power to UK homes and businesses.

It is the project’s latest achievement, resulting from collaboration with its lead contractors to optimise the design and installation of the onshore electrical system. It follows the removal of the planned Intermediate Electrical Compound in September, which was originally expected to be built near Orby.

Innogy’s Triton Knoll project director, Julian Garnsey, said: “Our design optimisation, carried out in partnership with UK contractors J Murphy & Sons and Siemens Transmission & Distribution Ltd, is continuing to help deliver the cost and impact reductions anticipated by the project. We’re very pleased to be able to deliver maximum power from this decreased number of circuits, thereby reducing the project’s local construction footprint.”

The work will see a reduction from six circuits of three cables each to two circuits of three cables each at 220kV in order to transmit the High Voltage AC electricity from the transition joint bays at the landfall near Anderby to the proposed Triton Knoll onshore substation. This section of the onshore cable will be installed by onshore cable contractor J Murphy & Sons.

THere will also be a reduction from four circuits of three cables each to two circuits of three cables each at 400kVin order to transmit the electricity from the new Triton Knoll onshore substation to the existing National Grid substation at Bicker Fen, Boston.  This section of the route is managed by substation contractor Siemens Transmission and Distribution Ltd.

As reported, the project was awarded a Government subsidy in the form of a Contract For Difference in September 2017, and expects to trigger a capital expenditure investment of around £2 billion into much needed UK energy infrastructure.  It is now progressing towards a financial investment decision anticipated this summer, with full onshore construction starting shortly after, and offshore construction starting in late 2019. 

First energy generation could be early 2021.

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