linguistic:voice_change, stylistic:style_transfer, linguistic:paraphrasing
Electricity

Vector owns and operates the majority of the distribution network in urban Auckland, with Counties Energy owning and operating the network south of central Papakura. The city is supplied from Transpower 's national grid from thirteen substations across the city. There are no major electricity generation stations located within the city or north of Auckland, so almost all of the electricity for Auckland and Northland must be transmitted from power stations in the south, mainly from Huntly Power Station and the Waikato River hydroelectric stations. The city had two natural gas-fired power stations (the 404 MW Ōtāhuhu B and the 175 MW Southdown), but both shut down in 2015.

There have been several notable power outages in Auckland. The five-week-long 1998 Auckland power crisis blacked out much of the CBD after a cascade failure occurred on the four main underground cables supplying the CBD. The 2006 Auckland Blackout interrupted supply to the CBD and many inner suburbs after an earth wire shackle at Transpower's Otāhuhu substation broke and short-circuited the lines supplying the inner city.

In 2009, much of the northern and western suburbs, as well as all of Northland, experienced a blackout when a forklift accidentally came into contact with the Ōtāhuhu to Henderson 220 kV line, the only major line supplying the region. Transpower spent $1.25 billion in the early 2010s reinforcing the supply into and across Auckland, including a 400 kV-capable transmission line from the Waikato River to Brownhill substation (operating initially at 220 kV), and 220 kV underground cables between Brownhill and Pakuranga, and between Pakuranga and Albany via the CBD. These reduced the Auckland Region's reliance on Ōtāhuhu substation and northern and western Auckland's reliance on the Ōtāhuhu to Henderson line.