Statistics
Page built 2026-09-19
Data as of 2025
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Built 2026-09-19 (19 September 2026)

New Zealand Electricity History, 2000 to 2025

New Zealand generated 38.9 TWh of electricity in 2000 and 43.3 TWh in 2025. New Zealand's electricity demand peaked at 44.3 TWh in 2010. The carbon intensity of New Zealand's electricity went from 185 gCO2/kWh in 2000 to 93 gCO2/kWh in 2025. Figures are Ember annual statistics; Ember's series for New Zealand starts in 2000.

Key Facts

  • New Zealand generated 38.9 TWh of electricity in 2000 and 43.3 TWh in 2025.
  • New Zealand's electricity demand peaked at 44.3 TWh in 2010.
  • The carbon intensity of New Zealand's electricity went from 185 gCO2/kWh in 2000 to 93 gCO2/kWh in 2025.
  • New Zealand's lowest carbon intensity on record was 87 gCO2/kWh, in 2023.
  • Gas's share of New Zealand's electricity went from 24.3% in 2000 to 8.9% in 2025, the largest change of any source.

Generation and Demand

2000 to 2025, TWh
New Zealand electricity generation and demand, 2000 to 2025 New Zealand generated 38.9 TWh of electricity in 2000 and 43.3 TWh in 2025. 0 13 25 38 50 200020052010201520202025
New Zealand generated 38.9 TWh of electricity in 2000 and 43.3 TWh in 2025.
Annual statistics through 2025, TWh
New Zealand electricity generation and demand, 2000 to 2025
YearGenerationDemand
200038.9 TWh38.9 TWh
200139.3 TWh39.3 TWh
200240.2 TWh40.2 TWh
200340.4 TWh40.4 TWh
200442.3 TWh42.3 TWh
200542.5 TWh42.5 TWh
200643.0 TWh43.0 TWh
200743.4 TWh43.4 TWh
200843.4 TWh43.4 TWh
200943.0 TWh43.0 TWh
201044.3 TWh44.3 TWh
201143.9 TWh43.9 TWh
201243.8 TWh43.8 TWh
201342.7 TWh42.7 TWh
201442.9 TWh42.9 TWh
201543.6 TWh43.6 TWh
201643.2 TWh43.2 TWh
201743.7 TWh43.7 TWh
201843.7 TWh43.7 TWh
201943.8 TWh43.8 TWh
202043.4 TWh43.4 TWh
202143.6 TWh43.6 TWh
202243.3 TWh43.3 TWh
202342.9 TWh42.9 TWh
202444.0 TWh44.0 TWh
202543.3 TWh43.3 TWh

Carbon Intensity

gCO2 per kWh generated
New Zealand carbon intensity of electricity, 2000 to 2025 The carbon intensity of New Zealand's electricity went from 185 gCO2/kWh in 2000 to 93 gCO2/kWh in 2025. 0 75 150 225 300 200020052010201520202025
The carbon intensity of New Zealand's electricity went from 185 gCO2/kWh in 2000 to 93 gCO2/kWh in 2025.
Annual statistics through 2025
New Zealand carbon intensity of electricity, 2000 to 2025
YearCarbon intensity
2000185 gCO2/kWh
2001230 gCO2/kWh
2002198 gCO2/kWh
2003231 gCO2/kWh
2004204 gCO2/kWh
2005254 gCO2/kWh
2006249 gCO2/kWh
2007227 gCO2/kWh
2008247 gCO2/kWh
2009197 gCO2/kWh
2010179 gCO2/kWh
2011166 gCO2/kWh
2012198 gCO2/kWh
2013177 gCO2/kWh
2014149 gCO2/kWh
2015143 gCO2/kWh
2016115 gCO2/kWh
2017132 gCO2/kWh
2018124 gCO2/kWh
2019133 gCO2/kWh
2020142 gCO2/kWh
2021145 gCO2/kWh
2022103 gCO2/kWh
202387 gCO2/kWh
2024112 gCO2/kWh
202593 gCO2/kWh

Every Year

YearGenerationDemandNet importsCarbon intensityLow carbon share
2025 43.3 TWh 43.3 TWh 0 TWh 93 gCO2/kWh 88.5%
2024 44.0 TWh 44.0 TWh 0 TWh 112 gCO2/kWh 86.0%
2023 42.9 TWh 42.9 TWh 0 TWh 87 gCO2/kWh 89.6%
2022 43.3 TWh 43.3 TWh 0 TWh 103 gCO2/kWh 86.9%
2021 43.6 TWh 43.6 TWh 0 TWh 145 gCO2/kWh 81.7%
2020 43.4 TWh 43.4 TWh 0 TWh 142 gCO2/kWh 80.9%
2019 43.8 TWh 43.8 TWh 0 TWh 133 gCO2/kWh 82.4%
2018 43.7 TWh 43.7 TWh 0 TWh 124 gCO2/kWh 83.4%
2017 43.7 TWh 43.7 TWh 0 TWh 132 gCO2/kWh 81.2%
2016 43.2 TWh 43.2 TWh 0 TWh 115 gCO2/kWh 84.3%
2015 43.6 TWh 43.6 TWh 0 TWh 143 gCO2/kWh 80.1%
2014 42.9 TWh 42.9 TWh 0 TWh 149 gCO2/kWh 79.1%
2013 42.7 TWh 42.7 TWh 0 TWh 177 gCO2/kWh 74.2%
2012 43.8 TWh 43.8 TWh 0 TWh 198 gCO2/kWh 71.7%
2011 43.9 TWh 43.9 TWh 0 TWh 166 gCO2/kWh 76.0%
2010 44.3 TWh 44.3 TWh 0 TWh 179 gCO2/kWh 73.1%
2009 43.0 TWh 43.0 TWh 0 TWh 197 gCO2/kWh 71.7%
2008 43.4 TWh 43.4 TWh 0 TWh 247 gCO2/kWh 64.2%
2007 43.4 TWh 43.4 TWh 0 TWh 227 gCO2/kWh 65.5%
2006 43.0 TWh 43.0 TWh 0 TWh 249 gCO2/kWh 64.8%
2005 42.5 TWh 42.5 TWh 0 TWh 254 gCO2/kWh 64.4%
2004 42.3 TWh 42.3 TWh 0 TWh 204 gCO2/kWh 72.4%
2003 40.4 TWh 40.4 TWh 0 TWh 231 gCO2/kWh 66.1%
2002 40.2 TWh 40.2 TWh 0 TWh 198 gCO2/kWh 69.6%
2001 39.3 TWh 39.3 TWh 0 TWh 230 gCO2/kWh 63.6%
2000 38.9 TWh 38.9 TWh 0 TWh 185 gCO2/kWh 71.8%

Share of Generation by Source

Percent of total generation
YearCoalGasOther fossilHydroWindSolarBioenergyOther renewables
20251.1%8.9%1.5%54.8%9.7%0.9%1.3%21.8%
20242.7%9.8%1.5%53.3%9.8%0.8%1.8%20.3%
20231.2%7.8%1.3%61.0%8.2%0.9%1.5%18.0%
20221.7%10.0%1.4%59.8%6.7%0.7%1.7%18.1%
20216.0%10.7%1.6%55.1%6.0%0.5%1.8%18.3%
20203.9%13.7%1.5%55.4%5.3%0.4%1.8%18.1%
20193.6%12.4%1.6%57.9%5.1%0.3%1.8%17.4%
20182.2%12.9%1.4%59.5%4.7%0.2%1.8%17.2%
20171.3%16.0%1.5%57.1%4.7%0.2%1.8%17.4%
20161.0%13.2%1.4%59.5%5.4%0.1%1.9%17.5%
20152.8%15.6%1.5%55.7%5.4%0.1%1.9%17.0%
20143.1%16.3%1.5%56.1%5.1%0.1%1.9%16.0%
20134.1%20.2%1.5%53.4%4.7%0.0%1.9%14.2%
20126.7%20.1%1.4%51.8%4.7%0.0%1.8%13.4%
20113.7%19.0%1.3%56.7%4.4%0.0%1.7%13.2%
20103.2%22.2%1.5%55.3%3.7%0.0%1.7%12.5%
20096.4%20.6%1.3%55.8%3.4%0.0%1.8%10.7%
20089.8%24.3%1.7%51.0%2.4%0.0%1.7%9.2%
20075.9%27.2%1.4%53.9%2.1%0.0%1.7%7.7%
200611.4%22.3%1.5%54.2%1.4%0.0%1.7%7.4%
200512.4%21.8%1.4%54.4%1.4%0.0%1.6%7.0%
20049.8%16.2%1.6%63.8%0.9%0.0%1.5%6.2%
20038.2%24.1%1.7%57.9%0.4%0.0%1.4%6.4%
20023.7%25.2%1.4%61.2%0.4%0.0%1.4%6.6%
20013.9%31.0%1.5%54.6%0.4%0.0%1.8%6.8%
20002.6%24.3%1.4%62.2%0.3%0.0%2.2%7.1%

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.