Ireland generated 650 GWh of electricity from hydro in 2025, 2.1% of its total, according to Ember. That made it the 107th largest hydro power producer in 2025 of the 153 countries with Ember data, comparing each country's latest year. Hydro supplied 14.0% 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
Ireland generated 650 GWh of electricity from hydro in 2025.
Hydro supplied 2.1% of Ireland's electricity in 2025.
Ireland was the 107th largest hydro power producer in 2025 among the 153 countries with Ember data, comparing each country's latest year.
Ireland's hydro generation in 2025 was 30% lower than in 2020, when it was 930 GWh.
Ireland's hydro generation in 2025 was 20% lower than in 2015, when it was 810 GWh.
Ireland's hydro generation peaked at 970 GWh in 2008.
Ireland's hydro share in 2025 was below the world share of 14.0%.
Ireland had 240 MW of hydro generating capacity in 2025.
Key Figures, 2025
Measure
Value
As of / source
Hydro generation
650 GWh
2025 · Ember
Share of Ireland's electricity
2.1%
2025 · Ember
World share of hydro
14.0%
2025 · Ember
Rank by hydro generation (each country's latest year)
107 of 153
2025 · Ember
Hydro capacity
240 MW
2025 · Ember
Hydro Generation Year by Year
Ember annual statistics, 1990 to 2025
Hydro
Ireland's electricity generation from hydro each year from 1990 to 2025, in GWh. It was 650 GWh in 2025.
Annual statistics through 2025, GWh
Ireland hydro electricity generation, 1990 to 2025
Year
Hydro
1990
700 GWh
1991
750 GWh
1992
820 GWh
1993
760 GWh
1994
920 GWh
1995
710 GWh
1996
720 GWh
1997
680 GWh
1998
920 GWh
1999
850 GWh
2000
850 GWh
2001
600 GWh
2002
910 GWh
2003
600 GWh
2004
630 GWh
2005
630 GWh
2006
720 GWh
2007
670 GWh
2008
970 GWh
2009
900 GWh
2010
600 GWh
2011
710 GWh
2012
800 GWh
2013
600 GWh
2014
710 GWh
2015
810 GWh
2016
680 GWh
2017
690 GWh
2018
690 GWh
2019
890 GWh
2020
930 GWh
2021
750 GWh
2022
700 GWh
2023
940 GWh
2024
770 GWh
2025
650 GWh
IrelandWorld
The share of Ireland's electricity generated from hydro, 1990 to 2025, compared with the world share. In 2025 it was 2.1%, against 14.0% worldwide.
Annual statistics through 2025, % of generation
Share of Ireland's electricity from hydro and the world share, 1990 to 2025
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.
Hydro Generation Month by Month
Ember monthly statistics through August 2026
Hydro
Ireland generated 0 TWh of electricity from hydro in August 2026, against 10.0 GWh in August 2025.
Monthly statistics through August 2026, TWh
Ireland monthly hydro electricity generation, September 2024 to August 2026
Month
Hydro
2024-09
20.0 GWh
2024-10
40.0 GWh
2024-11
50.0 GWh
2024-12
90.0 GWh
2025-01
80.0 GWh
2025-02
70.0 GWh
2025-03
40.0 GWh
2025-04
30.0 GWh
2025-05
20.0 GWh
2025-06
20.0 GWh
2025-07
20.0 GWh
2025-08
10.0 GWh
2025-09
50.0 GWh
2025-10
80.0 GWh
2025-11
80.0 GWh
2025-12
90.0 GWh
2026-01
90.0 GWh
2026-02
100 GWh
2026-03
100 GWh
2026-04
70.0 GWh
2026-05
20.0 GWh
2026-06
30.0 GWh
2026-07
10.0 GWh
2026-08
0 TWh
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for Ireland can differ slightly from the annual totals.