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 1227.177 MW
Northpower 77.4 MW
Top Energy 16.04 MW
Vector 973.897 MW
Counties Power 72.9 MW
NZ Steel 63.4 MW
Updated:
Top North Island Load Data
GZ 1 Load 482.86 MW
Northpower 77.4 MW
Top Energy 16.04 MW
Vector Northern 366.1 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
1987.324 10/06/2025 17:55
1959.758 06/06/2025 18:10
1900.528 22/05/2025 07:55
1891.575 09/06/2025 18:00
1887.128 03/06/2025 18:00
1852.378 07/06/2025 18:30
1848.668 08/06/2025 18:05
1838.918 26/05/2025 17:55
1830.368 19/05/2025 18:00
1825.178 28/05/2025 17:55
GZ1 Load Date
805.75 10/06/2025 18:00
784.86 06/06/2025 18:10
783.96 08/06/2025 18:20
766.12 03/06/2025 18:45
765.04 09/06/2025 17:50
755.39 07/06/2025 18:20
728.11 26/05/2025 17:50
726.83 22/05/2025 07:55
726.25 28/05/2025 17:45
720.27 19/05/2025 18:00