Project Outline The undergrounding of existing 132kV overhead lines is critical to the wider Hinkley connection project. When completed, it will allow a new 400 kV overhead line to be terminated in the Seabank 400 kV substation. Works progressed well with the completion of 102 CFA piles, installed at 30m depth through an existing landfill. This allowed Murphy to complete the associated foundation and tower erection works on three new cable sealing end towers. The first of six circuits was commissioned and energised in December 2023 with the remaining five circuits due to be commissioned by July 2024. KEY FACTS Connecting six million homes and business to homegrown low carbon energy 70,000 hours worked in 2023 105,000 tonnes of aggregate imported to create a permanent working platform The project team received a National Grid Gold Safety Award for developing a new overhead lines permit
