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Long Mountain

Wind power plant in Northern Ireland, United Kingdom. Approximate location 54.9841, -6.442.

WindNorthern IrelandUnited Kingdom

Long Mountain is a 28 MW wind power plant in Northern Ireland, United Kingdom. It is operated by Energia Renewables. Based on its capacity (estimated), it can supply roughly 23k homes (estimated). It ranks #420 of 2,860 United Kingdom power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 29.4% of United Kingdom's electricity; the national grid averages 217 gCO₂/kWh (64.4% low-carbon) (2025).

28Source-backed capacity
23,486homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GBR0004652.

Data status

Known data

FacilityLong Mountain WRI
CountryUnited Kingdom · Northern Ireland WRI
Coordinates54.9841, -6.442 WRI
FuelWind WRI
MW installed capacity28 MW WRI source record; scope not independently normalised
OwnerEnergia Renewables WRI

Calculated from dataset

Capacity rank in country#420 of 2860 calculated
Fuel-specific rank in country#169 of 779 calculated
Capacity vs country/fuel peers2.76× · 10 MW median · 779 peers calculated
Homes-powered equivalent23,486 calculated
Climate9.0°C · HDD 3,278 derived from coordinates
Environmental severityC4 · 28/100 derived from coordinates

Not available

CommissionedNot available not in dataset
TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM tracker 2026 (location L100001001720); fuel: WRI source-record fuel

In context: how this plant compares

At 28 MW, Long Mountain is well above the median wind plant in United Kingdom (10 MW). 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.

Capacity vs largest wind plants in United Kingdom

Hornsea 1 - Heron & Njord: 1,200 MW1kHornsea 1 …Walney 3: 660 MW660Walney 3London Array: 630 MW630London Arr…Beatrice: 588 MW588BeatriceGwynt y Mor: 576 MW576Gwynt y MorClyde Wind Farm: 523 MW523Clyde Wind…Greater Gabbard: 504 MW504Greater Ga…Dudgeon East: 402 MW402Dudgeon Ea…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Energia Renewables. All plants by this company →

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 55.0°N — which shapes how much energy it can produce and how its output varies through the year.

9.0°Cannual mean temp
3,278heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
105 melevation

Monthly mean temperature

J: 4 °CJF: 4 °CFM: 6 °CMA: 8 °CAM: 10 °CMJ: 13 °CJJ: 15 °CJA: 14 °CAS: 12 °CSO: 10 °CON: 7 °CND: 5 °CD15 °C

Heating degree-days here run 33% 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: 70/100 — this site sits in the top 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

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
28/100environmental-severity index
10.2°Cseasonal temperature swing
35 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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 #169 largest wind power plant of 779 in United Kingdom by capacity.

United Kingdom has 779 wind power plants in this dataset, together about 23,763 MW of capacity.

Nearby power plants

Location

Coordinates 54.9841, -6.442 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Long Mountain?

Long Mountain is a 28 MW source-record wind power plant in Northern Ireland, United Kingdom.

How many homes can Long Mountain power?

Its output is enough to supply roughly 23,486 homes (estimated).

Who operates Long Mountain?

Long Mountain is operated by Energia Renewables.

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