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 1777.038 MW
Northpower 98.51 MW
Top Energy 17.445 MW
Vector 1427.298 MW
Counties Power 109.6 MW
NZ Steel 97.3 MW
Updated:
Top North Island Load Data
GZ 1 Load 640.94 MW
Northpower 98.51 MW
Top Energy 17.445 MW
Vector Northern 500.9 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
1945.578 02/07/2025 17:55
1928.468 30/06/2025 17:55
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
788.23 02/07/2025 18:35
784.86 06/06/2025 18:10
783.96 08/06/2025 18:20
783.8 25/06/2025 18:45