Title: Railway electrification in Great Britain - Wikipedia
Headings: Railway electrification in Great Britain
Railway electrification in Great Britain
Contents
History
Early electrification
Post-war
Twenty-first century
Future of third rail
Existing systems – overhead line (OHL)
National Rail: 25 kV, 50 Hz AC overhead
Existing
Great Western Main Line
West Coast Main Line
Midland Main Line
High Speed 1
East Coast Main Line
West Anglia / Fen Line
Great Eastern Main Line
London, Tilbury and Southend line
London Overground
West Midlands
Manchester and North West area
Leeds area
Edinburgh
Central Scotland
Glasgow Suburban
2010s Network Rail electrification programme
Other systems
1,500 V DC, overhead
750 V DC, overhead
Other overhead systems
Existing systems - third and fourth rails
National Rail: 650 V - 750 V DC, third rail (top contact)
Southern Electric
Merseyrail
London Overground
Northern City Line
660 V DC, third rail (top contact)
Island Line (Isle of Wight)
630 V DC, fourth rail (top contact)
London Underground
750 V DC, third rail (bottom contact)
Docklands Light Railway
600 V DC, third rail (top contact)
250 V DC, third rail (top contact)
110 V DC, third rail (top contact)
100 V DC, four rail
Obsolete systems
6,600 V, 25 Hz AC, overhead
6,250 V 50 Hz AC, overhead
London, Tilbury and Southend Lines
Great Eastern Lines
Glasgow Suburban network
3,500 V DC, overhead
Bury to Holcombe Brook
1,500 V DC, overhead (historic)
Manchester, South Junction and Altrincham Railway
Manchester – Sheffield – Wath
Shenfield Metro
Shildon to Newport
1,200 V DC, third rail (side-contact)
Manchester Victoria - Bury
650 V DC, overhead
600 V DC, third rail
Tyneside Electrics
525 V DC, third rail
Liverpool Overhead Railway
500 V DC, overhead
500 V DC, third rail
City and South London Railway
440 V DC, third rail
Post Office Railway
See also
References
Further reading
525 V DC, third rail
630 V DC, fourth rail
650 V DC, third rail
750 V DC, third rail
1,500 V DC, overhead
6.6 kV 25 Hz AC, overhead
25 kV 50 Hz AC, overhead
External links

Content: Since then there have been regular updates including one published in October 2016. On 20 July 2017 Chris Grayling the Secretary of State for Transport cancelled a number of electrification projects citing disruptive works and use of bi-mode technology as an alternative. In June 2018,
Electrification has not been without controversy with cancellations and various appearances of the Secretary of State for Transport called before the Transport Select Committee. The Transport Select Committee published its report into various matters including regional investment disparity on the railways and calling again for the reinstatement of various cancelled electrification schemes. A written question was submitted and answered in parliament regarding route miles electrified in the years 1997–2019. In March 2019 the Railway Industry Association published a paper on Electrification cost challenge suggesting ways forward and a rolling program of electrification. Future of third rail
See also: Electric Spine
In June 2011 Peter Dearman of Network Rail suggested that the third-rail network will need to be converted into overhead lines. He stated: " Although the top speed is 100 mph, the trains cannot go over 80 mph well and 25% of power is lost from heat."