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 22 Mar 2026
Energy Totals GWh Previous Week
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 429.30 | 464.60 | 70.20 Thu 19/03/26 |
| South Island | 353.50 | 316.80 | 46.80 Sun 22/03/26 |
| New Zealand | 782.80 | 781.40 | 115.80 Thu 19/03/26 |
| Net HVDC Transfer | 36.7 North |
Energy Totals GWh Year to Date
| Generation GWh |
Supply GWh |
Max Daily Energy GWh |
|
|---|---|---|---|
| North Island | 4779.10 | 5322.40 | 73.10 Mon 02/02/26 |
| South Island | 3936.80 | 3370.30 | 46.80 Sun 22/03/26 |
| New Zealand | 8716.00 | 8692.70 | 115.80 Thu 19/03/26 |
| Net HVDC Transfer | 566.5 North |
Peak Half Hour Supply (Average MW)
| Previous Week MW |
Year to Date MW |
|
|---|---|---|
| North Island | 3395.30 Thu 19/03/26 08:00 | 3754.20 Mon 02/02/26 17:30 |
| South Island | 2314.10 Sun 22/03/26 19:30 | 2435.20 Wed 04/03/26 03:30 |
| New Zealand | 5584.80 Thu 19/03/26 08:00 | 5736.10 Tue 03/03/26 08:00 |