Data and sources
Download chart-ready data or review every plotted value alongside its official source.
Coverage and update dates refer to the values currently used by this site.
Quarterly electricity generation and demand through March 2026.
Generation groups follow MBIE's quarterly electricity tables. Other renewables combines biogas, wood, and waste heat; non-renewables combines oil, coal, and gas.
Monthly national demand-weighted final wholesale spot prices from January 2019 to June 2026.
Prices are nominal New Zealand dollars per megawatt-hour and are weighted by electricity demand.
Operating grid-connected solar capacity and the announced 2026/27 project pipeline.
Announced pipeline capacity is not yet operating. Projects can be delayed, changed, or cancelled.
Historical light-fleet electrified share through February 2026.
The series combines battery-electric and plug-in-hybrid light vehicles. It remains separate from the differently classified current NZTA snapshot.
Current registered passenger-car/van and light-commercial fleet by motive power.
Passenger means the NZTA Passenger Car/Van vehicle type. Light commercial means Goods Van/Truck/Utility with gross vehicle mass up to 3,500 kg or class NA. Electrified combines electric, range-extended electric, fuel-cell electric, and plug-in-hybrid motive types.
Mapped process-heat demand and emissions across 713 sites.
The database focuses on sites with fossil-fuelled primary heat equipment above 500 kW. Underlying site observations span multiple survey years, mainly 2021-2023.
Generation and load projects being delivered through Transpower's connection pipeline.
Project counts and capacity are delivery-pipeline figures, not commissioned generation.
Generation investment pipeline status at October 2025.
The broad pipeline is distinct from committed or under-construction projects; not all proposed capacity will proceed.
Operating, under-construction, and announced grid-scale batteries.
Megawatts measure discharge power; megawatt-hours measure stored energy. Status categories must not be added as though all capacity is operating.
Renewable spill, low-price periods, flexible demand, and batteries.
Used to explain why some renewable output is not used when supply exceeds demand or network and storage limits bind.
Proposed integrated wind, solar, and battery project.
Referral into the fast-track process is not approval or a final investment decision.
Demonstration support for industrial heat-pump projects at or above 85 C.
The initiative offered co-funding for demonstrations; it is not deployed national capacity.
Research including solid-state hydrogen storage materials at the University of Waikato.
This is research funding, not a commercial storage project.