High Voltage (HV) Power Framework

Transport for London (TfL) is establishing a dual-supplier framework to support the delivery of the increased HV Power requirements to operate the new Piccadilly line rolling stock and signalling systems. The framework is primarily for the Piccadilly line HV Power requirements with an option to include wider LUL HV Power requirements.

The Piccadilly Line Upgrade (PLU) will see the introduction of a new generation of Tube trains, set to reduce journey times, improve safety and transform the customer experience.

A key feature of the PLU is increased HV Power (phases 1 and 2), required to operate the new Piccadilly line rolling stock and signalling systems to permit faster station-to-station run times and higher frequency train services. These works and associated ‘Power On Dates’ are required due to increased power requirements of the new Piccadilly line rolling stock (24TS) and are critical to achieve the associated train roll-out programme.

The works required to be undertaken include a detailed system design and build, consisting of the procurement, supply, construction, installation, terminating, testing and commissioning and handover of the assets and structures necessary to facilitate implementation of the HV Power network upgrade. The substation and HV cable works required to deliver these upgrades are split into two phases, as follows:

Phase 1: all infrastructure upgrade works required to support introduction of the 24TS, and to increase peak Piccadilly line services to 27 trains per hour (TPH);

Phase 2: all infrastructure upgrade works required to support the new Piccadilly line signalling system, and the subsequent increased peak Piccadilly line service to 36TPH.

The Phase 1 scope comprises of 15 substation and switch house upgrades as well as extensive cable upgrades across the power network.

Phase 2 comprises seven substation upgrades, cable upgrades, as well as associated works to increase the nominal voltage from 630V to 750V.