New Zealand Gas Power: Generation, Share and Trend
New Zealand generated 3.84 TWh of electricity from gas in 2025, 8.9% of its total, according to Ember. That made it the 74th largest gas power producer in 2025 of the 117 countries with Ember data, comparing each country's latest year. Gas supplied 21.9% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through August 2026; they are compiled from national sources and are not real time.
Key Facts
- New Zealand generated 3.84 TWh of electricity from gas in 2025.
- Gas supplied 8.9% of New Zealand's electricity in 2025.
- New Zealand was the 74th largest gas power producer in 2025 among the 117 countries with Ember data, comparing each country's latest year.
- New Zealand's gas generation in 2025 was 35% lower than in 2020, when it was 5.94 TWh.
- New Zealand's gas generation in 2025 was 44% lower than in 2015, when it was 6.80 TWh.
- New Zealand's gas generation peaked at 12.2 TWh in 2001.
- New Zealand's gas share in 2025 was below the world share of 21.9%.
- New Zealand had 1.42 GW of gas generating capacity in 2025.
- Gas power in New Zealand emitted 2.07 MtCO2 in 2025, 51% of the power sector's emissions.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Gas generation | 3.84 TWh | 2025 · Ember |
| Share of New Zealand's electricity | 8.9% | 2025 · Ember |
| World share of gas | 21.9% | 2025 · Ember |
| Rank by gas generation (each country's latest year) | 74 of 117 | 2025 · Ember |
| Gas capacity | 1.42 GW | 2025 · Ember |
| Gas power emissions | 2.07 MtCO2 | 2025 · Ember |
Gas Generation Year by Year
Ember annual statistics, 2000 to 2025Annual statistics through 2025, TWh
| Year | Gas |
|---|---|
| 2000 | 9.45 TWh |
| 2001 | 12.2 TWh |
| 2002 | 10.2 TWh |
| 2003 | 9.71 TWh |
| 2004 | 6.86 TWh |
| 2005 | 9.26 TWh |
| 2006 | 9.61 TWh |
| 2007 | 11.8 TWh |
| 2008 | 10.6 TWh |
| 2009 | 8.86 TWh |
| 2010 | 9.84 TWh |
| 2011 | 8.35 TWh |
| 2012 | 8.81 TWh |
| 2013 | 8.63 TWh |
| 2014 | 7.00 TWh |
| 2015 | 6.80 TWh |
| 2016 | 5.71 TWh |
| 2017 | 6.98 TWh |
| 2018 | 5.66 TWh |
| 2019 | 5.42 TWh |
| 2020 | 5.94 TWh |
| 2021 | 4.65 TWh |
| 2022 | 4.31 TWh |
| 2023 | 3.36 TWh |
| 2024 | 4.31 TWh |
| 2025 | 3.84 TWh |
Annual statistics through 2025, % of generation
| Year | New Zealand | World |
|---|---|---|
| 2000 | 24.3% | 18.0% |
| 2001 | 31.0% | 18.8% |
| 2002 | 25.2% | 19.3% |
| 2003 | 24.1% | 19.6% |
| 2004 | 16.2% | 20.1% |
| 2005 | 21.8% | 20.3% |
| 2006 | 22.3% | 20.7% |
| 2007 | 27.2% | 21.4% |
| 2008 | 24.3% | 21.7% |
| 2009 | 20.6% | 22.0% |
| 2010 | 22.2% | 22.6% |
| 2011 | 19.0% | 22.2% |
| 2012 | 20.1% | 22.9% |
| 2013 | 20.2% | 21.9% |
| 2014 | 16.3% | 22.0% |
| 2015 | 15.6% | 23.1% |
| 2016 | 13.2% | 23.7% |
| 2017 | 16.0% | 23.5% |
| 2018 | 12.9% | 23.5% |
| 2019 | 12.4% | 23.8% |
| 2020 | 13.7% | 23.8% |
| 2021 | 10.7% | 23.2% |
| 2022 | 10.0% | 22.8% |
| 2023 | 7.8% | 22.5% |
| 2024 | 9.8% | 22.1% |
| 2025 | 8.9% | 21.9% |
| Year | Generation | Share | World share | Capacity | Emissions |
|---|---|---|---|---|---|
| 2025 | 3.84 TWh | 8.9% | 21.9% | 1.42 GW | 2.07 MtCO2 |
| 2024 | 4.31 TWh | 9.8% | 22.1% | 1.42 GW | 2.32 MtCO2 |
| 2023 | 3.36 TWh | 7.8% | 22.5% | 1.42 GW | 1.81 MtCO2 |
| 2022 | 4.31 TWh | 10.0% | 22.8% | 1.42 GW | 2.32 MtCO2 |
| 2021 | 4.65 TWh | 10.7% | 23.2% | 1.42 GW | 2.50 MtCO2 |
| 2020 | 5.94 TWh | 13.7% | 23.8% | 1.42 GW | 3.20 MtCO2 |
| 2019 | 5.42 TWh | 12.4% | 23.8% | 1.32 GW | 2.92 MtCO2 |
| 2018 | 5.66 TWh | 12.9% | 23.5% | 1.32 GW | 3.05 MtCO2 |
| 2017 | 6.98 TWh | 16.0% | 23.5% | 1.32 GW | 3.76 MtCO2 |
| 2016 | 5.71 TWh | 13.2% | 23.7% | 1.32 GW | 3.07 MtCO2 |
Full year by year history for New Zealand
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. World shares are Ember's World totals; ranks compare each country's latest year, which can differ between countries.
Gas Generation Month by Month
Ember monthly statistics through August 2026Monthly statistics through August 2026, TWh
| Month | Gas |
|---|---|
| 2024-09 | 240 GWh |
| 2024-10 | 280 GWh |
| 2024-11 | 90.0 GWh |
| 2024-12 | 60.0 GWh |
| 2025-01 | 240 GWh |
| 2025-02 | 440 GWh |
| 2025-03 | 510 GWh |
| 2025-04 | 410 GWh |
| 2025-05 | 410 GWh |
| 2025-06 | 400 GWh |
| 2025-07 | 320 GWh |
| 2025-08 | 410 GWh |
| 2025-09 | 310 GWh |
| 2025-10 | 70.0 GWh |
| 2025-11 | 70.0 GWh |
| 2025-12 | 70.0 GWh |
| 2026-01 | 60.0 GWh |
| 2026-02 | 50.0 GWh |
| 2026-03 | 170 GWh |
| 2026-04 | 280 GWh |
| 2026-05 | 270 GWh |
| 2026-06 | 190 GWh |
| 2026-07 | 100 GWh |
| 2026-08 | 70.0 GWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for New Zealand can differ slightly from the annual totals.