Hackney – Wimbledon Line is a 400kV underground line with a length of 32km from Hackney, Greater London, UK, to Wimbledon, Greater London, UK.

Construction works on the Hackney – Wimbledon Line project was commissioned in 2017.


The Hackney – Wimbledon Line, which is an underground line, is being operated by National Grid. The Hackney – Wimbledon Line is an upgrade line. The line carries alternating current (AC) through double circuit cable.

Hackney – Wimbledon Line project development status

The development of the Hackney – Wimbledon Line project was approved by The Office of Gas and Electricity Markets and the project works were completed in 2017.

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By GlobalData

About National Grid

National Grid Plc (National Grid) is an energy utility, which transmits and distributes electricity and natural gas. The company owns and operates electricity and gas transmission and distribution networks; and also serves as transmission owner and system operator. It provides installation and maintenance services to electricity metering and LNG suppliers; develops and operates electricity inter-connectors; and carries out LNG storage activities; and insurance and corporate activities. National Grid operates as an energy monopoly entity regulated by Ofgem. The company has operations in the UK and North Eastern US. National Grid is headquartered in London, Greater London, the UK.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.