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 26 Oct 2025

Energy Totals GWh Previous Week

Generation
GWh
Supply
GWh
Max Daily Energy
GWh
North Island 422.20 467.00 71.40 Thu 23/10/25
South Island 358.10 311.70 46.80 Mon 20/10/25
New Zealand 780.30 778.70 116.30 Tue 21/10/25
Net HVDC Transfer 46.4 North

Energy Totals GWh Year to Date

Generation
GWh
Supply
GWh
Max Daily Energy
GWh
North Island 20778.60 21443.40 89.70 Wed 20/08/25
South Island 13580.40 12855.40 49.80 Tue 19/08/25
New Zealand 34359.00 34298.80 138.40 Wed 20/08/25
Net HVDC Transfer 725 North

Peak Half Hour Supply (Average MW)

Previous Week
MW
Year to Date
MW
North Island 3493.00 Thu 23/10/25 09:00 4890.20 Tue 19/08/25 18:00
South Island 2242.80 Wed 22/10/25 07:30 2438.00 Wed 13/08/25 07:30
New Zealand 5702.40 Mon 20/10/25 08:00 7303.00 Fri 25/07/25 08:00