Upper North Island loads

Power system loads in the North Island north of Huntly (Zone 1) are displayed on this page to give power companies loading information across the zone.

This information is updated every five minutes. Due to the location of recording equipment at some sites, the load split between retailers for these zones is indicative only.

The historical Zone Load Peaks are winter and summer seasonal values and are reset at the change of seasons on 20 October and 10 May.

Updated:
Upper North Island Load Data
Zone 1 Load 1854.228 MW
Northpower 100.4 MW
Top Energy 27.7 MW
Vector 1494.198 MW
Counties Power 100.1 MW
NZ Steel 108.1 MW
Updated:
Top North Island Load Data
GZ 1 Load 726.53 MW
Northpower 100.4 MW
Top Energy 27.7 MW
Vector Northern 573.6 MW

Latest Zone Load Graphs

Zone 1 Load (Upper North Island)

Updated:

GZ 1 Load (Northland)

Updated:

Historical Zone Load Peaks

Top 10 now reflects Winter daily peaks.
Zone 1 Load Date
2212.778 21/07/2025 18:30
2133.885 17/07/2025 18:40
2096.937 18/06/2025 07:55
2086.795 15/07/2025 18:40
2038.97 19/06/2025 08:10
2030.788 17/06/2025 18:35
2025.164 14/07/2025 08:00
2019.148 07/07/2025 18:25
2018.505 16/06/2025 18:00
2010.855 16/07/2025 18:25
GZ1 Load Date
902.46 21/07/2025 19:00
886.8 15/07/2025 18:40
859.12 17/07/2025 18:30
836.051 18/06/2025 07:50
828.17 16/06/2025 18:20
826.03 14/07/2025 18:15
820.43 17/06/2025 18:45
815.082 19/06/2025 08:15
813.34 16/07/2025 18:35
813.22 07/07/2025 18:45