Altagowlan is a 7.6 MW wind power plant in Connaught, Ireland. It is operated by ESB Group [100%]. Based on its capacity (estimated), it can supply roughly 6.5k homes (estimated). It ranks #68 of 76 Ireland power plants by installed capacity. Commissioned in 2005, it is around 21 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 38.0% of Ireland's electricity; the national grid averages 257 gCO₂/kWh (48.1% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022825.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 7.6 MW, Altagowlan is below the median wind plant in Ireland (35 MW). Technically it is described as Onshore. Wind turbines convert moving air into electricity; output is variable and site-dependent, and modern turbines deliver some of the lowest-cost new generation on many grids.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Ireland wind capacity
- 0.6% of 1,326 MW across 38 plants in this dataset
- Age among peers
- 4 of 37 dated wind plants in Ireland are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest wind plants in Ireland
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by ESB Group [100%].
Local climate & thermal context
This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 54.1°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 28% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 66/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #30 largest wind power plant of 38 in Ireland by capacity.
Ireland has 38 wind power plants in this dataset, together about 1,326 MW of capacity.
Nearby power plants
- Tullynamoyle · Wind · 22 MW · Connaught
- Gavagh Glebe · Wind · 26 MW · Connaught
- Geevagh · Wind · 5 MW · Connaught
- Ora More · Wind · 15 MW · Northern Ireland
- Callagheen · Wind · 22.8 MW · Ulster
- Largan Hill · Wind · 5.9 MW · Connaught
Location
Coordinates 54.1222, -8.1486 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Altagowlan?
Altagowlan is a 7.6 MW wind power plant in Connaught, Ireland, commissioned in 2005.
Who operates Altagowlan?
Altagowlan is operated by ESB Group [100%].