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 27 Sep 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 419.20 | 525.40 | 80.40 Thu 24/09/26 |
| South Island | 431.50 | 320.10 | 55.20 Sun 27/09/26 |
| New Zealand | 850.70 | 845.60 | 126.10 Thu 24/09/26 |
| Net HVDC Transfer | 111.4 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 17316.10 | 19717.90 | 97.20 Thu 06/08/26 |
| South Island | 14333.10 | 11818.80 | 55.20 Sun 27/09/26 |
| New Zealand | 31649.20 | 31536.80 | 149.40 Fri 07/08/26 |
| Net HVDC Transfer | 2514.3 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 4313.90 Wed 23/09/26 18:30 | 5211.10 Fri 07/08/26 07:30 |
| South Island | 3086.40 Sun 27/09/26 20:00 | 3086.40 Sun 27/09/26 20:00 |
| New Zealand | 6494.30 Thu 24/09/26 07:30 | 7743.20 Thu 06/08/26 07:30 |