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Forss Extension

Wind power plant in Scotland, United Kingdom. Approximate location 58.5927, -3.5259.

WindScotlandUnited Kingdom

Forss Extension is a 5 MW wind power plant in Scotland, United Kingdom. It is operated by Renewable Energy Systems Ltd. Based on its capacity (estimated), it can supply roughly 4.4k homes (estimated). It ranks #1411 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).

5Legacy source-record capacity
4,425homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GBR1000352.

Data status

Known data

FacilityForss Extension WRI
CountryUnited Kingdom · Scotland WRI
Coordinates58.5927, -3.5259 WRI
FuelWind WRI
MW installed capacity5 MW WRI source record; scope not independently normalised
OwnerRenewable Energy Systems Ltd WRI

Calculated from dataset

Capacity rank in country#1411 of 2860 calculated
Fuel-specific rank in country#530 of 779 calculated
Capacity vs country/fuel peers0.52× · 10 MW median · 779 peers calculated
Homes-powered equivalent4,425 calculated
Climate7.6°C · HDD 3,776 derived from coordinates
Environmental severityC4 · 26/100 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 fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel

In context: how this plant compares

At 5 MW, Forss Extension is below 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 Renewable Energy Systems Ltd.

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 58.6°N — which shapes how much energy it can produce and how its output varies through the year.

7.6°Cannual mean temp
3,776heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
51 melevation

Monthly mean temperature

J: 4 °CJF: 4 °CFM: 5 °CMA: 6 °CAM: 8 °CMJ: 11 °CJJ: 12 °CJA: 13 °CAS: 11 °CSO: 9 °CON: 6 °CND: 4 °CD13 °C

Heating degree-days here run 54% 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: 81/100 — 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)
26/100environmental-severity index
9.1°Cseasonal temperature swing
25 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 #530 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 58.5927, -3.5259 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Forss Extension?

Forss Extension is a 5 MW source-record wind power plant in Scotland, United Kingdom.

How many homes can Forss Extension power?

Its output is enough to supply roughly 4,425 homes (estimated).

Who operates Forss Extension?

Forss Extension is operated by Renewable Energy Systems Ltd.

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