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Ireland Electricity: Generation Mix, Demand and Emissions

Ireland generated 31.6 TWh of electricity in 2025, according to Ember. Gas was the largest source at 47.4%, followed by wind (37.3%) and solar (4.6%). Demand was 37.7 TWh and each kWh generated emitted 271 gCO2/kWh. These are annual statistics for 2025, with monthly figures through September 2026; they are compiled from national sources and are not real time.

Key Facts

  • Ireland generated 31.6 TWh of electricity in 2025.
  • Gas supplied 47.4% of Ireland's electricity in 2025.
  • Wind supplied 37.3% of Ireland's electricity in 2025.
  • Solar supplied 4.6% of Ireland's electricity in 2025.
  • Low carbon sources (nuclear and renewables) supplied 47.2% of Ireland's generation in 2025.
  • The carbon intensity of Ireland's electricity was 271 gCO2/kWh in 2025.
  • Ireland's carbon intensity in 2025 was 61% lower than in 1990, when it was 696 gCO2/kWh.
  • Ireland had the 60th highest electricity demand among the 96 countries with Ember data for 2025.

Key Figures, 2025

MeasureValueAs of / source
Total generation31.6 TWh2025 · Ember
Electricity demand37.7 TWh2025 · Ember
Demand per person6.99 MWh2025 · Ember
Net imports6.13 TWh2025 · Ember
Carbon intensity271 gCO2/kWh2025 · Ember
Power sector emissions8.56 MtCO22025 · Ember
Demand rank (countries with 2025 data)60 of 962025 · Ember

Generation Mix, 2025

SourceGenerationShare
Gas 15.0 TWh 47.4%
Wind 11.8 TWh 37.3%
Solar 1.46 TWh 4.6%
Bioenergy 1.03 TWh 3.3%
Other fossil 900 GWh 2.9%
Coal 800 GWh 2.5%
Hydro 650 GWh 2.1%
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Year by Year

Ember annual statistics, 1990 to 2025
Ireland electricity generation by source, 1990 to 2025 Ireland's electricity generation by main source from 1990 to 2025, in TWh. In 2025 the largest sources were gas at 15.0 TWh, wind at 11.8 TWh, solar at 1.46 TWh, bioenergy at 1.03 TWh, other fossil at 900 GWh. 0 5 10 15 20 19901995200020052010201520202025
Ireland's electricity generation by main source from 1990 to 2025, in TWh. In 2025 the largest sources were gas at 15.0 TWh, wind at 11.8 TWh, solar at 1.46 TWh, bioenergy at 1.03 TWh, other fossil at 900 GWh.
Annual statistics through 2025, TWh
Ireland electricity generation by source, 1990 to 2025
YearGasWindSolarBioenergyOther fossil
19903.94 TWh0 TWh0 TWh0 TWh3.65 TWh
19913.75 TWh0 TWh0 TWh0 TWh4.56 TWh
19923.65 TWh10.0 GWh0 TWh0 TWh4.62 TWh
19934.53 TWh20.0 GWh0 TWh0 TWh4.19 TWh
19944.46 TWh20.0 GWh0 TWh0 TWh4.71 TWh
19955.16 TWh20.0 GWh0 TWh0 TWh4.66 TWh
19966.29 TWh10.0 GWh0 TWh30.0 GWh4.83 TWh
19976.57 TWh50.0 GWh0 TWh80.0 GWh5.48 TWh
19986.43 TWh170 GWh0 TWh90.0 GWh6.50 TWh
19996.96 TWh190 GWh0 TWh90.0 GWh7.80 TWh
20009.26 TWh250 GWh0 TWh90.0 GWh6.36 TWh
20019.15 TWh340 GWh0 TWh100 GWh7.34 TWh
200210.8 TWh390 GWh0 TWh80.0 GWh5.77 TWh
200313.0 TWh460 GWh0 TWh90.0 GWh4.44 TWh
200412.9 TWh670 GWh0 TWh110 GWh4.66 TWh
200511.6 TWh1.13 TWh0 TWh130 GWh5.75 TWh
200613.8 TWh1.65 TWh0 TWh130 GWh4.93 TWh
200716.1 TWh1.99 TWh0 TWh180 GWh4.02 TWh
200816.7 TWh2.45 TWh0 TWh220 GWh4.43 TWh
200916.3 TWh3.00 TWh0 TWh260 GWh3.52 TWh
201018.1 TWh2.86 TWh0 TWh310 GWh2.73 TWh
201115.4 TWh4.45 TWh0 TWh340 GWh2.33 TWh
201214.1 TWh4.08 TWh0 TWh440 GWh2.68 TWh
201313.1 TWh4.62 TWh0 TWh490 GWh2.50 TWh
201412.6 TWh5.22 TWh0 TWh540 GWh2.79 TWh
201512.4 TWh6.68 TWh0 TWh480 GWh2.94 TWh
201615.3 TWh6.25 TWh0 TWh680 GWh2.66 TWh
201715.7 TWh7.57 TWh10.0 GWh740 GWh2.46 TWh
201816.0 TWh8.78 TWh20.0 GWh850 GWh2.53 TWh
201915.9 TWh10.2 TWh30.0 GWh850 GWh2.50 TWh
202016.2 TWh11.7 TWh60.0 GWh920 GWh1.60 TWh
202115.2 TWh9.94 TWh80.0 GWh990 GWh2.10 TWh
202216.5 TWh11.4 TWh150 GWh1.01 TWh1.64 TWh
202315.4 TWh11.9 TWh650 GWh830 GWh700 GWh
202415.1 TWh11.6 TWh1.09 TWh1.00 TWh890 GWh
202515.0 TWh11.8 TWh1.46 TWh1.03 TWh900 GWh
YearGenerationDemandCarbon intensity
2025 31.6 TWh 37.7 TWh 271 gCO2/kWh
2024 31.1 TWh 36.1 TWh 271 gCO2/kWh
2023 31.5 TWh 34.8 TWh 282 gCO2/kWh
2022 33.8 TWh 34.0 TWh 331 gCO2/kWh
2021 31.7 TWh 33.3 TWh 352 gCO2/kWh
2020 32.2 TWh 32.0 TWh 291 gCO2/kWh
2019 30.9 TWh 31.5 TWh 312 gCO2/kWh
2018 31.0 TWh 31.0 TWh 362 gCO2/kWh
2017 30.8 TWh 30.1 TWh 404 gCO2/kWh
2016 30.3 TWh 29.6 TWh 442 gCO2/kWh

Full year by year history for Ireland, 1990 to 2025

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

Month by Month

Ember monthly statistics through September 2026
Ireland monthly electricity demand and generation, October 2024 to September 2026 Ireland's electricity demand in September 2026 was 2.82 TWh, and generation from the sources Ember reports was 2.31 TWh. Carbon intensity that month was 243 gCO2/kWh. 0 1 2 3 4 2024-102025-042025-102026-04
Ireland's electricity demand in September 2026 was 2.82 TWh, and generation from the sources Ember reports was 2.31 TWh. Carbon intensity that month was 243 gCO2/kWh.
Monthly statistics through September 2026, TWh
Ireland monthly electricity demand and generation, October 2024 to September 2026
MonthDemandGeneration
2024-102.86 TWh2.50 TWh
2024-113.00 TWh2.65 TWh
2024-123.08 TWh2.73 TWh
2025-013.22 TWh2.88 TWh
2025-022.88 TWh2.55 TWh
2025-033.04 TWh2.49 TWh
2025-042.61 TWh2.28 TWh
2025-052.66 TWh2.07 TWh
2025-062.60 TWh2.01 TWh
2025-072.69 TWh2.37 TWh
2025-082.67 TWh2.18 TWh
2025-092.68 TWh2.20 TWh
2025-102.95 TWh2.51 TWh
2025-113.07 TWh2.64 TWh
2025-123.20 TWh2.77 TWh
2026-013.36 TWh2.92 TWh
2026-022.98 TWh2.62 TWh
2026-033.13 TWh2.69 TWh
2026-042.84 TWh2.43 TWh
2026-052.78 TWh2.21 TWh
2026-062.64 TWh2.23 TWh
2026-072.72 TWh2.16 TWh
2026-082.78 TWh2.07 TWh
2026-092.82 TWh2.31 TWh

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of September 2026.

Seasonal Patterns in Ireland

Ember monthly statistics, complete years only, through September 2026

Electricity demand by month

Look for the brightest columns. Averaged over 2016 to 2025, demand is highest in December and lowest in June, and the busiest month uses 18% more electricity per day than the quietest.

Ireland's electricity demand for each month, in TWh, 2016 to 2025. Colour shows demand per day, so short months are not shaded as quiet.
Year JanFebMarAprMayJunJulAugSepOctNovDec
2025 3.22 2.88 3.04 2.61 2.66 2.60 2.69 2.67 2.68 2.95 3.07 3.20
2024 3.12 2.81 2.97 2.73 2.66 2.49 2.61 2.60 2.64 2.86 3.00 3.08
2023 2.94 2.60 2.90 2.63 2.61 2.46 2.52 2.55 2.55 2.74 2.86 2.97
2022 2.86 2.62 2.79 2.56 2.54 2.44 2.48 2.50 2.44 2.61 2.71 2.93
2021 2.78 2.52 2.68 2.47 2.48 2.34 2.44 2.42 2.44 2.60 2.72 2.84
2020 2.69 2.59 2.61 2.15 2.16 2.16 2.29 2.30 2.32 2.55 2.58 2.77
2019 2.65 2.38 2.57 2.39 2.35 2.19 2.27 2.26 2.25 2.48 2.59 2.60
2018 2.68 2.42 2.64 2.40 2.33 2.19 2.27 2.28 2.27 2.46 2.55 2.79
2017 2.61 2.38 2.53 2.28 2.26 2.16 2.21 2.20 2.20 2.36 2.52 2.62
2016 2.53 2.41 2.46 2.31 2.22 2.09 2.15 2.20 2.17 2.32 2.46 2.51
  • Lower demand per day
  • Higher demand per day
  • No data
  • Each cell shows the month's total demand in TWh, and colour compares demand per day so short months are not shaded as quiet. Lowest cell 2.09 TWh, highest 3.22 TWh. Colours are relative to Ireland alone.

Low carbon share of generation by month

Look for the brightest columns. Averaged over 2016 to 2025, the low carbon share is highest in February (49%) and lowest in July (26%), a gap of 23.3 points.

Share of Ireland's electricity generation from nuclear and renewable sources for each month, in percent, 2016 to 2025.
Year JanFebMarAprMayJunJulAugSepOctNovDec
2025 43% 61% 48% 42% 40% 48% 36% 42% 50% 50% 46% 51%
2024 47% 54% 57% 48% 33% 41% 35% 48% 39% 45% 37% 53%
2023 47% 46% 44% 43% 29% 28% 43% 44% 42% 41% 48% 60%
2022 36% 58% 37% 35% 35% 30% 22% 20% 27% 50% 51% 37%
2021 38% 57% 40% 29% 35% 27% 15% 25% 23% 39% 36% 43%
2020 46% 58% 48% 28% 33% 31% 32% 28% 33% 46% 44% 48%
2019 33% 50% 41% 34% 23% 28% 23% 38% 37% 41% 36% 46%
2018 48% 39% 34% 34% 25% 17% 18% 26% 33% 35% 44% 51%
2017 28% 37% 36% 22% 22% 28% 20% 22% 30% 36% 31% 37%
2016 37% 32% 26% 24% 18% 16% 18% 24% 26% 22% 23% 31%
  • Lower low carbon share
  • Higher low carbon share
  • No data
  • Each cell shows the low carbon share. Lowest cell 15%, highest 61%. Colours are relative to Ireland alone.

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of September 2026. Complete calendar years only.

Countries With a Similar Electricity Mix

Ember annual, 2025

Ireland's closest match is Greece, 74.5% the same.

  1. Greece 74.5% the same Greece generates 16.4 points less wind than Ireland
  2. United Kingdom 73.4% the same The United Kingdom generates 16.1 points less gas than Ireland
  3. Netherlands 73.2% the same The Netherlands generates 16.5 points more solar than Ireland
  4. Argentina 70.2% the same Argentina generates 25.1 points less wind than Ireland
  5. Italy 69.4% the same Italy generates 29.2 points less wind than Ireland

How close: the share of generation that would have to change fuel for one mix to match the other (half the sum of the fuel share differences); 100% minus that is "the same". Grids under 1 TWh are skipped. Grid twins: the 25 closest pairs and every country's nearest match

Ireland Electricity FAQ

What is the main source of electricity in Ireland?

Gas was the largest source of electricity in Ireland in 2025, supplying 47.4% of generation, followed by wind (37.3%) and solar (4.6%). Figures are Ember annual statistics.

How much electricity does Ireland use?

Ireland used 37.7 TWh of electricity in 2025, about 6.99 MWh per person.

How clean is Ireland's electricity?

Generating a kilowatt hour of electricity in Ireland emitted 271 gCO2/kWh in 2025, and low carbon sources supplied 47.2% of generation. That is 41% below the world average of 460 gCO2/kWh.

Does Ireland import electricity?

Yes. Ireland imported 6.13 TWh more electricity than it exported in 2025.

When does Ireland use the most electricity?

Averaged over 2016 to 2025, Ireland's electricity demand is highest in December and lowest in June. The busiest month uses 18% more electricity per day than the quietest (Ember monthly data).

Cite this page
APA 7

World Power Monitor. (2026). Ireland Electricity: Generation Mix, Demand and Emissions. https://worldpowermonitor.com/countries/ireland/

Plain text

World Power Monitor. Ireland Electricity: Generation Mix, Demand and Emissions. Data as of 2026-09. Data from Ember. https://worldpowermonitor.com/countries/ireland/

BibTeX 
@misc{wpm_countries_ireland_2026,
  title = {{Ireland Electricity: Generation Mix, Demand and Emissions}},
  author = {{World Power Monitor}},
  year = {2026},
  note = {Data as of 2026-09. Data from Ember.},
  url = {https://worldpowermonitor.com/countries/ireland/}
}

Permalink: https://worldpowermonitor.com/countries/ireland/

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