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 | 938.379 MW |
| Northpower | 66.5 MW |
| Top Energy | 5.7 MW |
| Vector | 721.599 MW |
| Counties Power | 58 MW |
| NZ Steel | 61 MW |
Updated:
| Top North Island Load Data | |
|---|---|
| GZ 1 Load | 348.88 MW |
| Northpower | 66.5 MW |
| Top Energy | 5.7 MW |
| Vector Northern | 251.5 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 Summer daily peaks.
| Zone 1 Load | Date |
|---|---|
| 1752.027 | 02/02/2026 17:55 |
| 1638.836 | 11/02/2026 17:30 |
| 1626.666 | 13/02/2026 12:55 |
| 1619.4 | 29/10/2025 08:00 |
| 1612.238 | 23/10/2025 11:05 |
| 1605.056 | 03/02/2026 09:45 |
| 1602.482 | 15/01/2026 13:25 |
| 1602.011 | 12/02/2026 15:55 |
| 1599.244 | 18/11/2025 17:45 |
| 1598.622 | 10/12/2025 17:45 |
| GZ1 Load | Date |
|---|---|
| 673.169 | 02/02/2026 18:50 |
| 634.031 | 11/02/2026 17:55 |
| 630.09 | 28/10/2025 20:20 |
| 626.7 | 29/10/2025 08:00 |
| 625.103 | 08/12/2025 18:45 |
| 625.079 | 21/01/2026 17:50 |
| 620.125 | 12/11/2025 18:35 |
| 620.012 | 18/11/2025 17:50 |
| 617.166 | 10/12/2025 18:05 |
| 616.926 | 13/02/2026 17:30 |