Upper South Island loads

Power system loads in the South Island north of Waitaki Valley (Zone 3) 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 South Island Load Data
Zone 3 Real Time VSAT Limit 1208.6 MW
Zone 3 Load 868.745 MW
Zone 3 Margin 339.855 MW
Zone 3 AUVLS enabled No
Electricity Ashburton 105.786 MW
Marlborough Lines 55.2 MW
Buller Electricity 7.5 MW
Network Tasman 101.1 MW
Alpine Energy Ltd 86.1 MW
Mainpower 81.5 MW
Orion 422.434 MW
Westpower 22.42 MW
Updated:
Top South Island Load Data
GZ 9 Real Time VSAT Limit 338.1 MW
GZ 9 Load 181.9 MW
GZ 9 Margin 156.2 MW
GZ 9 AUVLS enabled No
Marlborough Lines 55.2 MW
Buller Electricity 7.5 MW
Network Tasman 101.1 MW

Latest Zone Load Graphs

Zone 3 Load (Upper South Island)

Updated:

GZ 9 Load (Nelson)

Updated:

Historical Zone Load Peaks

Top 10 now reflects Summer daily peaks.
Zone 3 Load Date
1037.268 03/12/2024 17:55
1034.182 11/12/2024 17:50
1034.144 04/12/2024 18:20
1025.1 21/11/2024 08:00
1023.905 05/12/2024 17:55
1023.344 12/12/2024 08:10
1022.909 13/12/2024 08:15
1017.712 06/12/2024 08:05
1013.081 16/12/2024 17:35
1010.919 09/12/2024 17:55
GZ9 Load Date
200.35 30/10/2024 08:10
197.6 05/02/2025 08:00
195.62 21/10/2024 08:05
195.24 03/12/2024 08:15
195.2 04/12/2024 08:25
195.17 13/02/2025 07:50
194.66 11/02/2025 08:20
194.2 05/12/2024 18:30
193.84 23/01/2025 08:50
192.04 10/02/2025 08:20