National Grid Electricity Transmission's Hackney Waltham Cross Upgrade Project to Enhance Network Capacity
POWER GRIDS & TRANSMISSION
The Hackney Waltham Cross Upgrade Project (HWUP) aims to enhance transmission capacity by upgrading 19.5 km of overhead lines from 275kV to 400kV and reconductoring 29 km between Pelham-Rye House and Waltham Cross. This project, part of the Accelerated Strategic Transmission Investment mechanism, addresses the need for network reinforcement to support future generation increases and improve energy security.

Feb 27, 2026, 6:23 AM