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 18 Oct 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 394.70 | 488.40 | 77.30 Fri 16/10/26 |
| South Island | 412.00 | 314.10 | 56.50 Sun 18/10/26 |
| New Zealand | 806.70 | 802.50 | 122.60 Fri 16/10/26 |
| Net HVDC Transfer | 97.9 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 18479.80 | 21238.30 | 97.20 Thu 06/08/26 |
| South Island | 15604.10 | 12716.00 | 56.50 Sun 18/10/26 |
| New Zealand | 34083.90 | 33954.30 | 149.40 Fri 07/08/26 |
| Net HVDC Transfer | 2888.1 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 3793.90 Fri 16/10/26 08:00 | 5211.10 Fri 07/08/26 07:30 |
| South Island | 2701.30 Sun 18/10/26 21:00 | 2701.30 Sun 18/10/26 21:00 |
| New Zealand | 6085.20 Fri 16/10/26 08:00 | 7743.20 Thu 06/08/26 07:30 |