Global transmission capacity was estimated to have reached 20,397,232MVA by the end of 2022 and is forecasted to grow to 28,341,693MVA by 2028. New Zealand had 17,110MVA of capacity in 2022 and this is expected to rise to 19,947MVA by 2028. Listed below are the five largest transmission projects by capacity in New Zealand, according to GlobalData’s power database. GlobalData uses proprietary data and analytics to provide a complete picture of the global transmission segment. Buy the latest transmission substation project profiles here.

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1. Brunswick Substation – Upgrade – 220/33 kV

Brunswick Substation – Upgrade – 220/33 kV is a 220/33kV substation located at Brunswick, Manawatu-Wanganui, New Zealand. The substation is proposed and is expected to be commissioned in 2026. The Brunswick Substation – Upgrade – 220/33 kV will be operated by Transpower New Zealand Ltd.

The designed voltage level of the substation is 220/33kV and the operating voltage level is 220/33kV. The step in voltage of the project is 220kV and the step out voltage is 33kV. Upon completion, the substation will be able to operate at 50MVA.

Brunswick Substation – Upgrade – 220/33 kV is owned by Transpower New Zealand Ltd.

2. Linton Substation – Upgrade – 220/33 kV

Linton Substation – Upgrade – 220/33 kV is a 220/33kV substation located at Linton, Central North Island, New Zealand. The substation is under construction and is expected to be commissioned in 2024. The Linton Substation – Upgrade – 220/33 kV will be operated by Transpower New Zealand Ltd.

The designed voltage level of the substation is 220/33kV and the operating voltage level is 220/33kV. The step in voltage of the project is 220kV and the step out voltage is 33kV. Upon completion, the substation will be able to operate at 199MVA.

Linton Substation – Upgrade – 220/33 kV is owned by Transpower New Zealand Ltd.

3. New Norwood Substation

New Norwood Substation is a 220/66kV substation located at New Norwood, Johnsonville, New Zealand. The substation is planned and is expected to be commissioned in 2024. The New Norwood Substation will be operated by Orion New Zealand Ltd.

The designed voltage level of the substation is 220/66kV and the operating voltage level is 220/66kV. The step in voltage of the project is 220kV and the step out voltage is 66kV.

New Norwood Substation is owned by Orion New Zealand Ltd.

4. North Makarewa Substation

North Makarewa Substation is a 220kV substation located at North Makarewa, Southland, New Zealand. The substation is proposed and is expected to be commissioned in 2028. The North Makarewa Substation will be operated by Transpower New Zealand Ltd.

The designed voltage level of the substation is 220kV and the operating voltage level is 220kV. The step in voltage of the project is 220kV.

North Makarewa Substation is owned by Transpower New Zealand Ltd. Buy the profile here.

5. Waitaki Substation

Waitaki Substation is a 220/110kV substation located at Waitaki, Canterbury, New Zealand. The substation is proposed and is expected to be commissioned in 2033. The Waitaki Substation will be operated by Transpower New Zealand Ltd.

The designed voltage level of the substation is 220/110kV and the operating voltage level is 220/110kV. The step in voltage of the project is 220kV and the step out voltage is 110kV. Upon completion, the substation will be able to operate at 130MVA.

Waitaki Substation is owned by Transpower New Zealand Ltd.

For more details on the latest transmission substation projects, buy the project profiles here.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Power Intelligence Center provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide, while its capacity and generation database provides historic and forecast power generation and generation capacity by technology as well as consumption, imports and exports for over 170 countries.