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 19 Apr 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 497.30 | 480.60 | 71.10 Tue 14/04/26 |
| South Island | 282.60 | 298.40 | 44.20 Fri 17/04/26 |
| New Zealand | 779.90 | 779.00 | 114.30 Fri 17/04/26 |
| Net HVDC Transfer | 15.8 South |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 6624.20 | 7206.80 | 73.10 Mon 02/02/26 |
| South Island | 5147.90 | 4537.10 | 46.00 Fri 20/03/26 |
| New Zealand | 11772.10 | 11743.90 | 117.90 Thu 26/03/26 |
| Net HVDC Transfer | 610.8 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 3639.90 Tue 14/04/26 18:00 | 3754.20 Mon 02/02/26 17:30 |
| South Island | 2238.70 Sun 19/04/26 17:30 | 2435.20 Wed 04/03/26 03:30 |
| New Zealand | 5693.90 Wed 15/04/26 18:30 | 5736.10 Tue 03/03/26 08:00 |