St. Mary Cement Plant — Canada
Cement Plant in Canada. Approximate location 43.24346, -81.14759.
Cement PlantCanadaCO₂ estimate (modelled)
St. Mary Cement Plant is a cement plant in Canada. Its listed capacity is 2,100,000 t of cement. Cement plants heat limestone to 1,400°C in rotary kilns — one of the hottest industrial processes — and must control temperature precisely across the entire kiln length. It is operated by St Marys Cement Inc (Canada). By capacity it ranks #2 among 4 cement plants in Canada. It emits about 779,505 t CO₂e a year from Climate TRACE. That is 1.1% of the CO₂e from the 127 facilities in Canada that have an emissions figure in IndustryAtlas.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-32437350.
Data status
Known source data
Calculated from the dataset
Not available
Source data, measured cross-checks and calculated values are kept separate. No confidence percentage is invented.
Similar facilities by modelled emissions
- Heidelberg Union Bridge Cement Plant · 778,129 t CO₂e/yr · United States
- Star Cement Ras Al-Khaimah Plant · 781,108 t CO₂e/yr · United Arab Emirates
- JK Cement Gotan Cement Plant · 781,409 t CO₂e/yr · India
- Aso Cement Tagawa Cement Plant · 782,869 t CO₂e/yr · Japan
- Duba Cement Plant · 775,168 t CO₂e/yr · Saudi Arabia
Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.
Operating power plants within 50 km
- Sunningdale 1 · Solar · 7 MW · 19 km
- Stanton Dairy Farm · Biomass · 1 MW · 24 km
- Ingersoll 1 · Solar · 10 MW · 30 km
- Breen 2 · Solar · 10 MW · 32 km
- St. Columban · Wind · 33 MW · 36 km
PowerAtlas operating assets, ordered by great-circle distance from published coordinates.
In context: how this facility compares
At 2,100,000 t of cement, St. Mary Cement Plant is around the median cement plant in Canada (2,100,000 t of cement). Subsector: cement. As cement plant, it requires high process heat (typically 800–1400°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Cement plants heat limestone to 1,400°C in rotary kilns — one of the hottest industrial processes — and must control temperature precisely across the entire kiln length.
Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.
What 779,505 t CO₂e a year looks like
This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:
Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.
Carbon cost and Scope 1 emissions
At its reported 780k t CO₂e/yr (Scope 1), St. Mary Cement Plant carries no domestic carbon price — and as a CBAM-covered product, its 780k t at the EU CBAM rate (€75/t) is €58.7M/yr of exposure on EU-bound exports. CBAM share rises from 2.5% (2026) to 100% by 2034. No domestic carbon price — but cement, steel, aluminium, fertilizer and hydrogen exported to the EU face CBAM at €75/t (rising to 100% by 2034).
Carbon price: EU CBAM €75/t · EU ETS €85/t, September 10, 2026, refreshed live via Carbon Hub. CO₂: Climate TRACE. Indicative carbon value, not the cash bill — free allocation applies; not compliance advice.
Capacity vs largest cement plants in Canada
Listed capacity (t of cement), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
Operator
Operated by St Marys Cement Inc (Canada). All facilities by this operator →
Local climate
St. Mary Cement Plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 43.2°N in the northern hemisphere.
Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.
In this site’s local climate, a bare 150 °C surface sheds about 1423 W/m² to ambient — roughly 1.09× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).
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 sites
The #2 largest of 4 cement plants in Canada by listed capacity (Climate TRACE).
Nearby industrial sites
- Embro Cement Plant · Cement Plant · 340,500 t CO₂
- Beachville Operation · Lime Plant · 382,459 t CO₂
- Meridian Lightweight Technologies Inc. Plant E · Metals Plant · 5,653 t CO₂
- Meridian Lightweight Technologies Inc · Metals Plant · 5,440 t CO₂
- CGC Hagersville Plant · Other Manufacturing · 79,360 t CO₂
- Cleveland-Cliffs Lake Erie steel plant · Steel Plant · 3,642,472 t CO₂
Location
Coordinates 43.24346, -81.14759. View on OpenStreetMap.
Frequently asked questions
What type of facility is St. Mary Cement Plant?
St. Mary Cement Plant is a cement plant in Canada. Cement plants heat limestone to 1,400°C in rotary kilns — one of the hottest industrial processes — and must control temperature precisely across the entire kiln length.
What capacity is listed for St. Mary Cement Plant?
The open dataset lists 2,100,000 t of cement of capacity for St. Mary Cement Plant.
How much CO₂ does St. Mary Cement Plant emit?
The page uses about 779,505 t CO₂e/year from the open dataset It ranks #29 among facilities in Canada by estimated CO₂.
Where is St. Mary Cement Plant located?
St. Mary Cement Plant is in Canada at approximately 43.24346, -81.14759.
Who operates St. Mary Cement Plant?
The operator recorded in the open dataset is St Marys Cement Inc (Canada).