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 14 Sep 2025
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 520.70 | 535.50 | 82.50 Tue 09/09/25 |
| South Island | 335.30 | 319.30 | 47.10 Thu 11/09/25 |
| New Zealand | 856.00 | 854.80 | 128.50 Tue 09/09/25 |
| Net HVDC Transfer | 16 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 18040.80 | 18499.70 | 89.70 Wed 20/08/25 |
| South Island | 11507.60 | 10996.70 | 49.80 Tue 19/08/25 |
| New Zealand | 29548.30 | 29496.40 | 138.40 Wed 20/08/25 |
| Net HVDC Transfer | 510.9 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 4418.80 Tue 09/09/25 18:30 | 4890.20 Tue 19/08/25 18:00 |
| South Island | 2420.40 Thu 11/09/25 07:30 | 2438.00 Wed 13/08/25 07:30 |
| New Zealand | 6664.40 Tue 09/09/25 07:30 | 7303.00 Fri 25/07/25 08:00 |