About the project
North East 400 kV Reinforcement Works
Scottish and Southern Electricity Networks (SSEN), operating as Scottish Hydro Electric Transmission plc (SHET) under licence, has plans to reinforce the existing 275 kV overhead line connecting the substations at Blackhillock, Keith, Kintore and Peterhead to enable operation at an increased voltage of 400 kV. The reinforcement works would involve replacing the insulators and fittings on the existing steel lattice towers, as well as reconfiguring a short section of the overhead line to divert it out of Keith substation. The works may also include replacing the existing conductors strung along the overhead line route, depending on the outcome of condition assessments which are currently underway.
These reinforcement works are required to allow increased generation capacity to the transmission system, while keeping the network fully operable and compliant with all necessary technical standards. Without these necessary reinforcements, required in conjunction with the Rothienorman, New Deer and Peterhead, the existing network cannot facilitate all required generation connections in the North East of Scotland.