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 Jan 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 398.30 | 463.50 | 71.50 Thu 15/01/26 |
| South Island | 362.80 | 294.90 | 43.60 Tue 13/01/26 |
| New Zealand | 761.10 | 758.50 | 114.80 Thu 15/01/26 |
| Net HVDC Transfer | 67.9 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 984.90 | 1134.00 | 71.50 Thu 15/01/26 |
| South Island | 894.80 | 739.70 | 44.30 Fri 09/01/26 |
| New Zealand | 1879.70 | 1873.70 | 114.80 Thu 15/01/26 |
| Net HVDC Transfer | 155.1 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 3489.80 Thu 15/01/26 17:30 | 3489.80 Thu 15/01/26 17:30 |
| South Island | 2144.00 Sun 18/01/26 21:00 | 2144.00 Sun 18/01/26 21:00 |
| New Zealand | 5434.20 Thu 15/01/26 17:30 | 5434.20 Thu 15/01/26 17:30 |