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 21 Jun 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 476.40 | 536.80 | 83.40 Wed 17/06/26 |
| South Island | 380.30 | 317.40 | 51.00 Sun 21/06/26 |
| New Zealand | 856.70 | 854.20 | 128.90 Wed 17/06/26 |
| Net HVDC Transfer | 62.9 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 10860.90 | 11843.30 | 86.20 Thu 11/06/26 |
| South Island | 8354.00 | 7325.20 | 51.00 Sun 21/06/26 |
| New Zealand | 19214.80 | 19168.50 | 132.80 Thu 11/06/26 |
| Net HVDC Transfer | 1028.8 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 4393.70 Tue 16/06/26 18:00 | 4578.10 Thu 11/06/26 08:00 |
| South Island | 2728.40 Sun 21/06/26 18:00 | 2728.40 Sun 21/06/26 18:00 |
| New Zealand | 6656.90 Tue 16/06/26 18:00 | 6914.70 Thu 11/06/26 08:00 |