Transpower's role is to ensure electricity can be transported from where it is generated to some large electricity users and the distribution businesses that deliver it to homes and businesses all over the country. It's network is made up of nearly 12,000 km of high-voltage transmission lines (and the pylons that hold them) and more than 170 substations and switchyards. Transpower is responsible for building, maintaining and operating this network. Our role is to set the maximum revenue it can recover from consumers to run the National Grid efficiently.

Since 1 April 2011, Transpower has been regulated by way of individual price-quality regulation. The individual price-quality path governs Transpower's revenues for each pricing year, with the paths being reset either every 4 or 5 years. The individual price-quality path was reset for the 2015-2020 regulatory period on 1 April 2015. Read more information on Transpower's price-quality path.

Transpower is also subject to information disclosure regulation.

Information disclosure requirements for Transpower

We require Transpower to publish information each year detailing its performance.

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Transpower's price-quality path

Since April 2011, Transpower has been regulated by way of individual price-quality regulation. The individual price-quality path governs Transpower's revenues for each pricing year, with the paths being reset every 4 or 5 years.

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Transpower capital investment proposals

Transpower may submit separate proposals to seek approval for certain capital investment projects for the national grid or the high-voltage electricity transmission network.

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