Illustrative 3D image of the proposal looking South East
To enable the consented Mossy Hill Wind Farm to connect to the Kergord-Gremista transmission line currently under construction by SSE Transmission, we will build a new substation within the wind farm site.
The substation will comprise of two main buildings, the larger one for SSENT and the smaller one for Statkraft. The SSENT building will contain electrical switchgear to allow the wind farm to connect underground into one of the Kergord to Gremista cables that run through the wind farm site, adjacent to the A970 road. The Statkraft building will contain a transformer to step-up the voltage from 33kV to 132kV. There will also be two smaller buildings and some ancillary plant within the fenced area of the substation.
The new substation is required to connect the consented Mossy Hill Wind Farm into new electricity grid infrastructure that SSENT are installing through the site, from Kergord to Gremista. The Kergord to Gremista cables form a key part of the new electricity network in Shetland and will allow customers to be supplied directly from the Scottish Mainland via the new subsea cable. The newsubstation will therefore include electrical switchgear and associated protection equipment to ensure both supplies to customers and the wind farm operate reliably.