Last updated: 03 Oct 2024
What we do
Transpower holds a unique position in the New Zealand energy sector as both National Grid owner and System Operator.
Last updated: 03 Oct 2024
Transpower holds a unique position in the New Zealand energy sector as both National Grid owner and System Operator.
Last updated: 07 Apr 2026
Our core purpose is to empower the energy future for New Zealand – a future that delivers a net-zero carbon economy and a reliable and secure electricity system.
Last updated: 30 Mar 2026
Last updated: 30 Mar 2026
Last updated: 12 Dec 2023
Information on the contribution of renewable electricity to the generation mix.
Last updated: 18 Aug 2022
Last updated: 23 Dec 2025
Last updated: 30 Jan 2025
Last updated: 15 May 2025
Last updated: 03 Mar 2026
The lake level charts and hydro level and inflow charts on this page are updated every Tuesday afternoon.