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Ireland · asset class

Power Plants in Ireland

Ireland has 129 power plants mapped on the OverWatts open energy atlas — the 33rd-largest fleet of the 155 countries that hold any, and 0.4% of the world's mapped total. Of these, 25 operating and 100 under construction or proposed. Operating generation capacity totals 7.4 GW across 25 utility-scale plants of 100 MW and above. The largest is Rian Offshore Array wind farm (2.5 GW).

The largest owner-operators are Electricity Supply Board (10), SSE Renewables (7) and ESB Group (6) — Electricity Supply Board alone is named on 8% of them. Half of Ireland's power plants in service predate 2017 (median commissioning year of the 24 with a known date), 12 came online in the past decade and the oldest still listed is Turlough Hill hydroelectric plant, dating from 1974. 100 are in the pipeline, led by Rian Offshore Array wind farm (2.5 GW), under construction. They account for 74% of every energy asset OverWatts maps in Ireland.

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129
Power Plant in Ireland
#33
of 155 countries
7.4 GW
Operating capacity
100
In construction / proposed

Operating generation capacity by fuel

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Largest power plants in Ireland

Who owns Ireland's power plants

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 2017 · oldest Turlough Hill hydroelectric plant (1974) · newest Timahoe North solar farm (2025) · 24 of 129 carry a start date

Under construction & proposed

How Ireland compares · power plants by country

Frequently asked

How many power plants are there in Ireland?
OverWatts maps 129 power plants in Ireland — 0.4% of the world's mapped total, the 33rd-largest national fleet of the 155 countries with any.
What is the largest power plant in Ireland?
Rian Offshore Array wind farm, at 2.5 GW.
How much power-generation capacity do Ireland's power plants have?
About 7.4 GW operating across 25 plants, with a further 59.1 GW under construction or proposed. That covers utility-scale sites of 100 MW and above, so it sits below national installed capacity wherever distributed generation is large.
Who owns the power plants in Ireland?
Electricity Supply Board is named as owner or operator on the most — 10 of 129 (8%). Next are SSE Renewables (7), ESB Group (6) and Ørsted A/S (6).
How old are Ireland's power plants?
The median commissioning year is 2017, across the 24 in service with a known start date. The oldest still listed is Turlough Hill hydroelectric plant (1974); 12 came online in the past ten years.
What new power plants are being built in Ireland?
100 projects are under construction or proposed. The largest are Rian Offshore Array wind farm (2.5 GW), Tralee Offshore wind farm (2.5 GW) and Sunrise Offshore wind farm (2.0 GW).

Other asset classes in Ireland

Pipeline 18Oil & Gas Field 14Cement Plant 6LNG Terminal 4Grid Storage 2Data Centre 1

Power Plants in other countries

China 11,537United States 3,831India 1,675Brazil 879Spain 653Australia 615Philippines 489Russia 461Canada 452Vietnam 392Japan 387Germany 335