Open data
Understanding New Zealand's energy system
A place to track and understand the numbers behind New Zealand energy:
year by year, and region by region.
Why this page is the same format as the US Energy Data page
This site deliberately follows the layout of US Energy Data: the same topics, the same section order on every page, the same chart views and controls. Keeping the same layout is what makes that difference visible: you can open the US page and the New Zealand page side by side and compare like with like. Where New Zealand data cannot support a chart that the US page has, the slot stays and explains why.
How the US and New Zealand compare →
Historical snapshot from 1974 to today. Data retrieved September 2026. How this was built and where the data comes from.
Explore by topic
Prices & Bills
What people pay for electricity, gas and fuel, and how bills vary by town.
Electricity Demand
How much electricity each region consumes, and where it goes.
Electricity Generation
Where power comes from: hydro, geothermal, wind, solar, gas and coal.
Hydrocarbons & Biofuels
Crude oil, natural gas and coal production and reserves.
Reliability & Outages
How often the power goes out, and for how long.
Emissions
Greenhouse gases from fuel combustion and electricity generation.
Explore by region
A full energy profile for all 40 network reporting regions.Explore curated data for any of the 40 electricity network regions: how much power it uses, what people pay, how reliable the lines are, how much solar has gone in. Click any region on the map for its complete profile, or see the full list.