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St. Mary Cement Plant

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, roughly comparable to the annual emissions of 182k passenger cars.

2,100,000t of cement
779,505t CO₂e / yr (Climate TRACE)
#29CO₂ rank in Canada
0.37t CO₂ per capacity unit

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-32437350.

Data status

Known source data

FacilitySt. Mary Cement Plant Climate TRACE
CountryCanada Climate TRACE
Coordinates43.24346, -81.14759 Climate TRACE
Sector / subsectorcement Climate TRACE
Reported capacity2,100,000 t of cement Climate TRACE
Owner / operatorSt Marys Cement Inc (Canada) Climate TRACE
Modelled CO₂e779,505 t/yr Climate TRACE

Calculated from the dataset

Canada rank#29 of 127 · top 22.8% calculated
Global cement rank#675 of 2113 · top 31.9% calculated
Climate contextderived from coordinates calculated

Not available

Fuel typeNot available not in dataset
Thermal capacity (MW)Not available not in dataset

Source data, measured cross-checks and calculated values are kept separate. No confidence percentage is invented.

Similar facilities by modelled emissions

Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.

Operating power plants within 50 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 — heat that must be supplied by boilers, furnaces or direct combustion, and losses through uninsulated vessels and piping represent wasted fuel. Removable modular insulation can cut those losses by 80–96%, surface-cooling equipment to ≤45°C, with payback often under 2 years. 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:

182kcars driven for a year
102khomes' annual energy use
13 milliontree seedlings grown 10 years

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Carbon cost, Scope 1 & decarbonization potential

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. The fastest decarbonization lever is energy efficiency: eliminating heat loss on hot equipment (removable insulation, steam & waste-heat recovery) typically cuts 2–5% of fuel-related CO₂ — here ≈16k t–39k t/yr, worth €1.2M€2.9M, with payback up to 2 years. 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).

780k t CO₂e / yrScope 1 emissions
€58.7M/yrCBAM exposure on EU exports
16k t–39k t/yr ≈ €1.2M€2.9MDecarbonization potential

Carbon price: EU CBAM €75/t · EU ETS €79/t, July 2, 2026, refreshed live via Carbon Hub. CO₂: Climate TRACE. Efficiency range: US DOE / ASTM C680 (method). Indicative carbon value, not the cash bill — free allocation applies; not compliance advice. Estimate the saving for this site →

Capacity vs largest cement plants in Canada

Port Daniel Cement Plant: 3,100,000 t of cement3.1MPort Danie…St. Mary Cement Plant: 2,100,000 t of cement2.1MSt. Mary C…Saint Basile Cement Plant: 1,570,000 t of cement1.6MSaint Basi…Picton Cement Plant: 790,000 t of cement790kPicton Cem…

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.

~6°Ctypical annual mean
~19°Ctypical warm-season
Warm-summer humid continental: four distinct seasons — cold winters and warm summers

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

The local climate sets how fast unprotected steel, protective coatings and the insulation on hot process equipment degrade at this site. It sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
34/100environmental-severity index
26.7°Cseasonal temperature swing
55 kmdistance to coast
ModerateCUI risk tier

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; removable insulation recovers about 1352 W/m² of that. 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).

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 sites

The #2 largest of 4 cement plants in Canada by listed capacity (Climate TRACE).

Nearby industrial sites

Location

Coordinates 43.24346, -81.14759. View on OpenStreetMap.

Heat loss & insulation profile

For a cement plant, the main modular-insulation targets are rotary kiln shell, preheater tower, tertiary air duct & kiln hood, clinker-cooler ducts, valves. Typical hot-surface ranges used for screening: 200–1,000 °C.

60% of cement CO2 is process calcination - NOT insulation-addressable; energy here is the fuel side only.

Indicative recoverable energy

A first-pass insulation screen suggests about 13,000 MWh/year of recoverable heat-loss reduction and about 4,400 t CO₂e/year of avoided emissions. Screening estimate scaled from installed process-heat projects and surface-temperature reduction data.

See Inzonex Modular Insulation → Run the calculator →

Screening calculation from facility class, capacity and open emissions/energy context. Engineering survey required before procurement.

Safety & the no-regret first step

Start with a thermal survey of valves, flanges, doors and bends. Removable modular insulation keeps maintenance access open while lowering exposed-surface temperature and wasted heat.

External climate finance your country can access

For energy-efficiency projects around process heat, likely external funding channels include:

Sources: country climate-finance facilities and public development-bank programmes.

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).

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