Generation History
Historical Aotearoa New Zealand electricity generation data.
Annual generation by fuel type (TWh)
Absolute electricity generation in terawatt-hours by fuel type each year. The growth of wind and solar alongside Aotearoa New Zealand's dominant hydro and geothermal base is clear. The most recent year is partial.
Annual electricity mix (%)
How Aotearoa New Zealand's electricity generation mix has changed over time. Hydro and geothermal have long provided the backbone; wind and solar are growing contributors. Each bar shows the proportional share of generation from each fuel type for that year.
Annual carbon emissions
Megatons of CO₂ equivalent from Aotearoa New Zealand electricity generation each year. The long-term downward trend reflects the decarbonisation of the grid. The most recent bar is a partial estimate based on data available so far this year.