Wanlip STW 11kV substation build

The project

Wanlip Sewage Treatment Works, north of Leicester, is a major facility serving an estimated 750,690 population equivalent (PE). Demand is expected to rise to 890,169 PE by 2027 and 928,546 PE by 2038. As part of Severn Trent Water's Green Recovery Programme, a significant upgrade is under way at Wanlip, including site-wide high-voltage infrastructure improvements.

For Kier, Ground Utilities delivered the services enabling and civil works package for a new 11kV substation and Severn Trent's new 11kV switch room. We are also building the works' inlet civils package.

Scope of works

• Site preparation, levelling and setting out
• Temporary works design (TWD)
• Construction of a bellmouth and access road
• Groundworks and foundations for the new 11kV substation
• Groundworks and foundations for Severn Trent's new 11kV switch room
• Trench excavation, troughs and duct installation for the cable routes, with backfill and permanent reinstatement
• Security and perimeter fencing
• Surface drainage