H R Milner — Canada
Coal power plant in Alberta, Canada. Approximate location 54.0071, -119.1032.
CoalAlbertaCanadasubcritical
H R Milner is a 450 MW coal power station in Alberta, Canada. It is operated by Maxim Power Corp. Based on its capacity (estimated), it can supply roughly 563k homes (estimated). It ranks #91 of 1,210 Canada power plants by installed capacity. Commissioned in 1972, it is around 54 years old — an older, legacy facility. In context, coal supplies about 4.1% of Canada's electricity; the national grid averages 191 gCO₂/kWh (77.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id CAN0002052.
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
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000100164; fuel: WRI GPPD
In context: how this plant compares
At 450 MW, H R Milner is below the median coal plant in Canada (540 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Canada coal capacity
- 3.1% of 14,386 MW across 20 plants in this dataset
- Age among peers
- 6 of 17 dated coal plants in Canada are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Canada
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Maxim Power Corp.
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 54.0°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 132% 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: 97/100 — 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
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), 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 #13 largest coal power plant of 20 in Canada by capacity.
Canada has 20 coal power plants in this dataset, together about 14,386 MW of capacity.
Nearby power plants
- Prairie Lights power project · Gas · 400 MW · Alberta
- East Twin · Hydro · 2 MW · Alberta
- McIntosh Creek · Hydro · 1 MW · Alberta
- Wonder Valley power station · Gas · 1,200 MW · Alberta
- Hinton Pulp · Biomass · 52 MW · Alberta
- Weyerhaeuser Grande Prairie · Biomass · 48 MW · Alberta
Location
Coordinates 54.0071, -119.1032 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is H R Milner?
H R Milner is a 450 MW coal power plant in Alberta, Canada, commissioned in 1972.
Who operates H R Milner?
H R Milner is operated by Maxim Power Corp.