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 Dec 2025
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 362.00 | 459.50 | 72.10 Wed 10/12/25 |
| South Island | 438.70 | 336.90 | 58.60 Sun 14/12/25 |
| New Zealand | 800.70 | 796.30 | 119.90 Wed 10/12/25 |
| Net HVDC Transfer | 101.8 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 23487.70 | 24708.20 | 89.70 Wed 20/08/25 |
| South Island | 16385.20 | 15082.30 | 58.60 Sun 14/12/25 |
| New Zealand | 39873.00 | 39790.50 | 138.40 Wed 20/08/25 |
| Net HVDC Transfer | 1302.9 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 3596.60 Wed 10/12/25 17:30 | 4890.20 Tue 19/08/25 18:00 |
| South Island | 2824.00 Sun 14/12/25 21:00 | 2824.00 Sun 14/12/25 21:00 |
| New Zealand | 5733.40 Wed 10/12/25 17:30 | 7303.00 Fri 25/07/25 08:00 |