Editing Wellington (section)

===Electric power===
Wellington's first public electricity supply was established in 1904, alongside the introduction of electric trams, and was originally supplied at 105&nbsp;volts 80&nbsp;hertz. The conversion to the now-standard 230/400&nbsp;volts 50&nbsp;hertz began in 1925, the same year the city was connected to the [[Mangahao Power Station|Mangahao hydroelectric scheme]]. Between 1924 and 1968, the city's supply was supplemented by a coal-fired power station at Evans Bay.<ref>{{cite web|title=Evans Bay Power Station – Engineering New Zealand|url=http://www.engineeringnz.org/our-work/heritage/heritage-records/evans-bay-power-station/|url-status=live|archive-url=https://web.archive.org/web/20190509100127/https://www.engineeringnz.org/our-work/heritage/heritage-records/evans-bay-power-station/|archive-date=9 May 2019|access-date=9 May 2019|website=engineeringnz.org}}</ref>

Today, Wellington city is supplied from four [[Transpower New Zealand Limited|Transpower]] substations: Takapu Road, Kaiwharawhara, Wilton, and Central Park (Mount Cook). [[Wellington Electricity]] owns and operates the local distribution network.

The city is home to two large wind farms, [[Project West Wind|West Wind]] and [[Mill Creek Wind Farm|Mill Creek]], which combined contribute up to 213&nbsp;MW of electricity to the city and the national grid.

While Wellington experiences regular strong winds, and only 63% of Wellington Electricity's network is underground, the city has a very reliable power supply. In the year to March 2018, Wellington Electricity disclosed the average customer spent just 55 minutes without power due to unplanned outages.<ref>{{cite web|title=EDB Information Disclosure Requirements – Wellington Electricity Lines Limited – year ended 31 March 2018|url=https://www.welectricity.co.nz/dmsdocument/156|url-status=dead|archive-url=https://web.archive.org/web/20181018122249/https://www.welectricity.co.nz/dmsdocument/156|archive-date=18 October 2018|access-date=18 October 2018}}</ref>