Weekly Energy Report

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