This is a summary of energy for the previous week, ending Sunday at midnight.
The data is uploaded every Monday at 9.15am.
Week Ending Sunday 23 Aug 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 479.30 | 571.70 | 87.70 Wed 19/08/26 |
| South Island | 425.60 | 328.90 | 49.30 Sun 23/08/26 |
| New Zealand | 905.00 | 900.60 | 135.20 Tue 18/08/26 |
| Net HVDC Transfer | 96.7 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 15201.20 | 17068.40 | 97.20 Thu 06/08/26 |
| South Island | 12220.80 | 10266.40 | 52.90 Fri 07/08/26 |
| New Zealand | 27422.10 | 27334.90 | 149.40 Fri 07/08/26 |
| Net HVDC Transfer | 1954.4 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 4738.60 Mon 17/08/26 18:30 | 5211.10 Fri 07/08/26 07:30 |
| South Island | 2717.70 Sun 23/08/26 18:00 | 2717.70 Sun 23/08/26 18:00 |
| New Zealand | 7081.10 Mon 17/08/26 18:30 | 7743.20 Thu 06/08/26 07:30 |