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St. Lawrence

Wind power plant in Newfoundland and Labrador, Canada. Approximate location 46.966, -55.4268.

WindNewfoundland and LabradorCanadaOnshore

St. Lawrence is a 27 MW wind power plant in Newfoundland and Labrador, Canada. It is operated by Elemental Energy [100%]. Based on its capacity (estimated), it can supply roughly 23k homes (estimated). It ranks #508 of 1,211 Canada power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 7.9% of Canada's electricity; the national grid averages 191 gCO₂/kWh (77.0% low-carbon) (2025).

27Source-backed capacity
22,976homes powered (est.)
2009commissioned (~17 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CAN0008422.

Data status

Known data

FacilitySt. Lawrence WRI
CountryCanada · Newfoundland and Labrador WRI
Coordinates46.966, -55.4268 WRI
FuelWind WRI
MW installed capacity27 MW WRI source record; scope not independently normalised
OwnerElemental Energy [100%] WRI
Commissioned2009 WRI
TechnologyOnshore WRI

Calculated from dataset

Capacity rank in country#508 of 1211 calculated
Fuel-specific rank in country#112 of 241 calculated
Capacity vs country/fuel peers1.12× · 24 MW median · 241 peers calculated
Homes-powered equivalent22,976 calculated
Climate5.3°C · HDD 4,627 derived from coordinates
Environmental severityC3 · 33/100 derived from coordinates

Not available

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 L100000906517); fuel: WRI source-record fuel

In context: how this plant compares

At 27 MW, St. Lawrence is well above the median wind plant in Canada (24 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.

Capacity vs largest wind plants in Canada

Lac-Alfred: 300 MW300Lac-AlfredBlackspring Ridge: 299 MW299Blacksprin…K2 Wind: 270 MW270K2 WindSouth Kent: 270 MW270South KentWest Lincoln Niagara Region Wind Farm: 230 MW230West Linco…Rivière du Moulin 2: 200 MW200Rivière du…Wolfe Island: 198 MW198Wolfe Isla…Prince: 189 MW189Prince

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

Owner

Operated by Elemental Energy [100%].

Local climate & thermal context

This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 47.0°N — which shapes how much energy it can produce and how its output varies through the year.

5.3°Cannual mean temp
4,627heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
91 melevation

Monthly mean temperature

J: -4 °CJF: -5 °CFM: -2 °CMA: 2 °CAM: 7 °CMJ: 11 °CJJ: 15 °CJA: 16 °CAS: 13 °CSO: 8 °CON: 3 °CND: -1 °CD16 °C

Heating degree-days here run 88% 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: 92/100 — 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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
33/100environmental-severity index
21.1°Cseasonal temperature swing
26 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 #112 largest wind power plant of 241 in Canada by capacity.

Canada has 241 wind power plants in this dataset, together about 12,127 MW of capacity.

Nearby power plants

Location

Coordinates 46.966, -55.4268 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is St. Lawrence?

St. Lawrence is a 27 MW source-record wind power plant in Newfoundland and Labrador, Canada, commissioned in 2009.

How many homes can St. Lawrence power?

Its output is enough to supply roughly 22,976 homes (estimated).

Who operates St. Lawrence?

St. Lawrence is operated by Elemental Energy [100%].

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