The Yell High Voltage Alternating Current (HVAC) Connection is a GB-GB transmission project, led by SSEN Transmission (Scottish Hydro Electric Transmission), to electrically link the island of Yell into the expanded Mainland Shetland transmission network as part of the Shetland Strategy. The proj...
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As part of its Shetland Strategy, SSEN Transmission scheduled further "Yell Connections – Marine" information and consultation events at Mossbank Public Hall on 7 October 2025 and Burravoe Public Hall on 8 October 2025. These events invite stakeholders to meet the project team and provide feedback on the marine aspects of planned Yell transmission connections, including the subsea cable between Yell and the Northern Shetland mainland.
SSEN Transmission announced marine consultation events on 25 and 26 June 2025 for the proposed Yell High Voltage Alternating Current (HVAC) Connection, which will link Yell to the electricity transmission system on Mainland Shetland. The sessions at Burravoe Public Hall on Yell and Voe Public Hall on the mainland were organised to share information and gather feedback on potential subsea cable routes and landfall locations for the Yell HVAC subsea connection.
SSE plc (SSEN Transmission) concluded a contract with Rigmar Services Ltd on 6 April 2023 to carry out a marine survey for the Yell subsea cable, covering geophysical and geotechnical survey works along the proposed subsea route between Shetland and Yell. The £1.69 million services contract marks a key early development step to gather seabed data needed to design and route the planned High Voltage Alternating Current (HVAC) connection between Yell and mainland Shetland.
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Yell Subsea Cable, 220kV subsea circuit, 220kV AC subsea cable, LT216 (project code)
For June 2021, SSEN Transmission scheduled further public and statutory body consultations covering technology, routing and location options for the Yell Switching Station, as well as pre‑application consultations on the selection of Yell subsea cable routes and landfall locations. These engagements were intended to refine the design of the Yell connection based on feedback before submitting consent applications.
In July 2020, SSEN Transmission (Scottish Hydro Electric Transmission) held an initial public consultation introducing the Shetland Connections (Shetland Renewable Connections) Project, which includes the proposed subsea electricity connection between Yell and Mainland Shetland. The consultation sought early feedback from communities and stakeholders on the overall project concept and associated infrastructure, including the Yell subsea connection.
Ofgem and the National Energy System Operator (NESO) have formally confirmed the need for new electricity transmission infrastructure in Shetland under SSEN Transmission’s Shetland Strategy, which includes the proposed Yell Subsea Cable (Yell High Voltage Alternating Current Connection) linking Yell Substation to the Northern Substation Hub and wider GB network. This regulatory confirmation underpins the development of the integrated Shetland Strategy projects, providing a mandate to progress detailed planning and consultation for the Yell subsea HVAC link and associated works.
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