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 1660.613 MW
Northpower 106.255 MW
Top Energy 26.396 MW
Vector 1325.598 MW
Counties Power 89.1 MW
NZ Steel 86.4 MW
Updated:
Top North Island Load Data
GZ 1 Load 623.815 MW
Northpower 106.255 MW
Top Energy 26.396 MW
Vector Northern 465 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
2096.937 18/06/2025 07:55
2038.97 19/06/2025 08:10
2030.788 17/06/2025 18:35
2018.505 16/06/2025 18:00
2001.3 25/06/2025 08:10
1987.324 10/06/2025 17:55
1974.438 01/07/2025 18:00
1959.758 06/06/2025 18:10
1928.468 30/06/2025 17:55
1916.608 24/06/2025 19:15
GZ1 Load Date
836.051 18/06/2025 07:50
828.17 16/06/2025 18:20
820.43 17/06/2025 18:45
815.082 19/06/2025 08:15
805.75 10/06/2025 18:00
793.27 01/07/2025 18:25
784.86 06/06/2025 18:10
783.96 08/06/2025 18:20
783.8 25/06/2025 18:45
783.26 22/06/2025 18:20