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Emissions

28,423 records and observations from 2 official sources. Updated .

Facility pollutant releases reported to the National Pollutant Release Inventory (NPRI).

Latest report: Canada data this week: recalls, river levels, rinks and inflation (week of October 12, 2026)

Facilities with the largest total releases (NPRI 2024)

Total releases (excluding road dust) of substances reported in tonnes or kg, converted to tonnes. Substances reported in grams (e.g. dioxins) are excluded from the total.

DateRecordOrganizationValue
2024Aluminerie Alouette inc.
Primary production of alumina and aluminum · Sept-Îles · QC
Aluminerie Alouette inc.99,502.4 t
2024Suncor Energy Inc. Oil Sands
Mined oil sands extraction · Fort Mcmurray · AB
Suncor Energy Oil Sands Limited Partnership93,907.8 t
2024Syncrude Canada Ltd
Mined oil sands extraction · Fort Mcmurray · AB
Syncrude Canada Ltd.91,542.5 t
2024Usine Alma
Primary production of alumina and aluminum · Alma · QC
Rio Tinto Alcan Inc70,965.5 t
2024Kearl Oil Sands Processing Plant and Mine
Mined oil sands extraction · Fort Mckay · AB
Imperial Oil Resources Limited60,186.2 t
2024Poplar River Power Station
Fossil-fuel electric power generation · Coronach · SK
Saskatchewan Power Corporation56,222.8 t
2024Aluminerie de Bécancour inc.
Primary production of alumina and aluminum · Bécancour · QC
Aluminerie de Bécancour inc.53,441.9 t
2024Rio Tinto Alcan Inc.
Primary production of alumina and aluminum · Kitimat · BC
Rio Tinto Alcan Inc50,552.9 t
2024Fort Hills Oil Sands
Mined oil sands extraction · Fort Mcmurray · AB
Fort Hills Energy L.P.44,002.6 t
2024Aluminerie de Baie-Comeau
Primary production of alumina and aluminum · Baie-Comeau · QC
Ne pas prendre - Alcoa Canada Co.41,373.9 t
2024Usine Grande-Baie
Primary production of alumina and aluminum · La Baie · QC
Rio Tinto Alcan Inc37,820 t
2024Usine Arvida
Primary production of alumina and aluminum · Saguenay · QC
Rio Tinto Alcan Inc34,150.4 t
2024Aluminerie de Deschambault
Primary production of alumina and aluminum · Deschambault · QC
Compagnie de gestion Alcoa - Lauralco34,088 t
2024Usine Laterrière
Primary production of alumina and aluminum · Laterrière · QC
Rio Tinto Alcan Inc32,878.7 t
2024Fording River Operations
Bituminous coal mining · Elkford · BC
EVR Operations Limited (formerly Teck Coal Limited)30,652.5 t
2024Carol Project
Iron ore mining · Labrador City · NL
Iron Ore Company of Canada30,159.9 t
2024Boundary Dam Power Station
Fossil-fuel electric power generation · Estevan · SK
Saskatchewan Power Corporation28,869.1 t
2024Aurora North Mine Site
Mined oil sands extraction · Fort Mcmurray · AB
Suncor Energy (Syncrude) Operating Inc27,227.4 t
2024Sudbury Integrated Nickel Operations Smelter
Non-ferrous metal (except aluminum) smelting and refining · Falconbridge · ON
Glencore Canada Corporation26,038.1 t
2024Horizon Oil Sands Processing Plant and Mine
Mined oil sands extraction · Fort Mcmurray · AB
Canadian Natural Resources Limited23,949.6 t
2024Usine de Bouletage de Port-Cartier
Iron ore mining · Port-Cartier · QC
ArcelorMittal Exploitation Minière Canada s.e.n.c.20,823.1 t
2024Glencore Canada Corporation - Fonderie Horne
Non-ferrous metal (except aluminum) smelting and refining · Rouyn-Noranda · QC
Glencore Canada Corporation20,365.8 t
2024Lingan Generating Station
Fossil-fuel electric power generation · Lingan · NS
Nova Scotia Power Incorporated19,472.2 t
2024Elkview Operations
Bituminous coal mining · Sparwood · BC
EVR Operations Limited (formerly Teck Coal Limited)18,344.6 t
2024Teck Highland Valley Copper Partnership
Copper-zinc ore mining · Logan Lake · BC
Teck Highland Valley Copper Partnership17,949.7 t
2024Porcupine Gold Mines
Gold and silver ore mining · South Porcupine · ON
GOLDCORP CANADA LTD17,935.2 t
2024Greenhills Operations
Bituminous coal mining · Elkford · BC
EVR Operations Limited (formerly Teck Coal Limited)16,507.2 t
2024Mine du Lac Bloom
Iron ore mining · Fermont · QC
MINERAI DE FER QUÉBEC INC.16,052.3 t
2024Copper Cliff Smelter
Non-ferrous metal (except aluminum) smelting and refining · Copper Cliff · ON
Vale Canada Limited15,944 t
2024Projet Nunavik Nickel
Nickel-copper ore mining · Kattiniq · QC
Canadian Royalties inc.15,241.4 t
2024Ashbridges Bay Treatment Plant
Sewage treatment facilities · Toronto · ON
City of Toronto14,929.5 t
2024Detour Lake Project
Gold and silver ore mining · Cochrane · ON
Kirkland Lake Gold Inc14,250.1 t
2024Canadian Natural Upgrading Limited Muskeg River Mine and Jackpine Mine
Mined oil sands extraction · Fort Mcmurray · AB
Canadian Natural Upgrading Ltd14,246.4 t
2024Shand Power Station
Fossil-fuel electric power generation · Estevan · SK
Saskatchewan Power Corporation14,226.2 t
2024Sarnia Refinery Plant
Petroleum refineries · Sarnia · ON
Imperial Oil13,488.9 t
2024Mount Milligan Mine
Copper-zinc ore mining · Bulkley-Nechako C · BC
Centerra Gold Inc.13,068.2 t
2024Mississauga Cement Plant
Cement manufacturing · Mississauga · ON
CRH Canada Group Inc.12,705.3 t
2024Line Creek Operations
Bituminous coal mining · Sparwood · BC
EVR Operations Limited (formerly Teck Coal Limited)12,491.9 t
2024Lake Erie
Iron and steel mills and ferro-alloy manufacturing · Haldimand County · ON
Stelco Inc.12,135.9 t
2024Sarnia Refinery
Petroleum refineries · Sarnia · ON
Suncor Energy Products Partnership12,076.6 t
2024Genesee Thermal Generating Station
Fossil-fuel electric power generation · Warburg · AB
Capital Power Generation Services Inc.11,995.9 t
2024Bombardier Toronto
Aerospace product and parts manufacturing · Mississauga · ON
Bombardier Inc.11,382 t
2024Meadow Lake Mechanical Pulp
Mechanical pulp mills · Meadow Lake · SK
Meadow Lake Mechanical Pulp11,286.4 t
2024ArcelorMittal Dofasco
Iron and steel mills and ferro-alloy manufacturing · Hamilton · ON
ArcelorMittal Canada MP Inc. and ArcelorMittal Canada Inc. partners in ArcelorMittal Dofasco G.P.11,208.5 t
2024Scotford Upgrader and Upgrader Cogeneration
Mined oil sands extraction · Fort Saskatchewan · AB
Shell Canada Energy Limited11,171.4 t
2024Cold Lake
In-situ oil sands extraction · Grande Centre · AB
Imperial Oil Resources Limited10,598.7 t
2024Bonnybrook Wastewater Treatment Plant
Sewage treatment facilities · Calgary · AB
City of Calgary10,158.3 t
2024Rio Tinto Fer et Titane inc.- Complexe de Sorel-Tracy
Iron and steel mills and ferro-alloy manufacturing · Sorel-Tracy · QC
Rio Tinto Fer et Titane inc.9,863.4 t
2024Imperial Oil Nanticoke Refinery
Petroleum refineries · Nanticoke · ON
Imperial Oil9,762.6 t
2024Trenton Generating Station
Fossil-fuel electric power generation · Trenton · NS
Nova Scotia Power Incorporated9,277.8 t
Source: National Pollutant Release Inventory (NPRI) – facility data, 2024 — Environment and Climate Change Canada · Licence: Open Government Licence – Canada 2.0 · retrieved 2026-10-18 · Official source ↗

Largest greenhouse gas emitters (GHGRP, latest year)

Total reported emissions in tonnes CO2 equivalent (excluding CO2 from biomass). Only facilities emitting at least 10 kt a year must report.

DateRecordOrganizationValue
2024Mildred Lake and Aurora Plant Sites
Mined oil sands extraction · Fort Mcmurray · AB
Suncor Energy (Syncrude) Operating Inc13,677,658.3
2024Suncor Energy Inc. Oil Sands
Mined oil sands extraction · Fort Mcmurray · AB
Suncor Energy Oil Sands Limited Partnership8,036,871.1
2024Horizon Oil Sands Processing Plant and Mine
Mined oil sands extraction · Fort Mcmurray · AB
Canadian Natural Resources Limited6,016,813
2024Firebag
In-situ oil sands extraction · Ft. Mcmurray · AB
Suncor Energy Oil Sands Limited Partnership5,746,505.7
2024Cold Lake
In-situ oil sands extraction · Bonnyville · AB
Imperial Oil Resources Limited5,735,585.2
2024TransCanada Pipeline, Alberta System
Pipeline Transportation of Natural Gas · Fairview · AB
Nova Gas Transmission Ltd.4,929,010.6
2024Genesee Thermal Generating Station
Fossil-Fuel Electric Power Generation · Warburg · AB
Capital Power Generation Services Inc.4,726,635.7
2024Algoma Steel Inc
Iron and Steel Mills and Ferro-Alloy Manufacturing · Sault Ste. Marie · ON
Algoma Steel Inc.4,226,731.3
2024ArcelorMittal Dofasco
Iron and Steel Mills and Ferro-Alloy Manufacturing · Hamilton · ON
ArcelorMittal Canada MP Inc. and ArcelorMittal Canada Inc. partners in ArcelorMittal Dofasco G.P.4,164,816.2
2024Christina Lake SAGD Bitumen Battery
In-situ oil sands extraction · Lac La Biche · AB
Cenovus FCCL Ltd.3,811,754.2
2024Lake Erie
Iron and Steel Mills and Ferro-Alloy Manufacturing · Haldimand County · ON
Stelco Inc.3,769,989.2
2024PAW In-Situ Oilsands Facilities
In-situ oil sands extraction · Bonnyville · AB
Canadian Natural Resources Limited3,767,623.5
2024Foster Creek SAGD Bitumen Battery (with Cogen)
In-situ oil sands extraction · Bonnyville · AB
Cenovus FCCL Ltd.3,639,696.8
2024NOVA Chemicals Corporation (Joffre)
Petrochemical Manufacturing · Lacombe · AB
NOVA Chemicals Corporation3,385,927.7
2024Poplar River Power Station
Fossil-Fuel Electric Power Generation · Coronach · SK
Saskatchewan Power Corporation3,341,335.1
2024Kearl Oil Sands Processing Plant and Mine
Mined oil sands extraction · Fort Mckay · AB
Imperial Oil Resources Limited3,031,073.9
2024Irving Oil Refinery
Petroleum Refineries · Saint John · NB
Irving Oil Limited2,960,047.9
2024Surmont SAGD Commercial Battery
In-situ oil sands extraction · Anzac · AB
ConocoPhillips Surmont Partnership2,841,211.6
2024Keephills Thermal Electric Power Generating Plant
Fossil-Fuel Electric Power Generation · Duffield · AB
TransAlta Generation Partnership2,717,196.7
2024Scotford Upgrader and Upgrader Cogeneration
Mined oil sands extraction · Fort Saskatchewan · AB
SHELL CANADA LIMITED2,694,251.2
2024Jackfish District
In-situ oil sands extraction · Conklin · AB
Canadian Natural Resources Limited2,649,273.4
2024Fort Hills Oil Sands
Mined oil sands extraction · Fort Mcmurray · AB
Fort Hills Energy L.P.2,637,195.1
2024Long Lake
In-situ oil sands extraction · Anzac · AB
CNOOC Petroleum North America ULC2,577,489.7
2024Boundary Dam Power Station
Fossil-Fuel Electric Power Generation · Estevan · SK
Saskatchewan Power Corporation2,484,727.8
2024Shepard Energy Centre
Fossil-Fuel Electric Power Generation · Calgary · AB
Enmax Generation Portfolio Inc2,316,217.4
2024Belledune Generating Station
Fossil-Fuel Electric Power Generation · Belledune · NB
New Brunswick Power Corporation2,090,256.2
2024Co-op Refinery Complex
Petroleum Refineries · Regina · SK
Consumers' Co-operative Refineries Limited1,744,806.9
2024Greenfield Energy Centre LP
Fossil-Fuel Electric Power Generation · Courtright · ON
Greenfield Energy Centre, LP1,723,218.4
2024Canadian Natural Upgrading Limited Muskeg River Mine and Jackpine Mine
Mined oil sands extraction · Fort Mcmurray · AB
Canadian Natural Upgrading Ltd1,669,303.2
2024Imperial Oil, Strathcona Refinery
Petroleum Refineries · Edmonton · AB
Imperial Oil1,667,159.3
2024Lingan Generating Station
Fossil-Fuel Electric Power Generation · Lingan · NS
Nova Scotia Power Incorporated1,657,592.9
2024Canadian Fertilizers Limited
Chemical Fertilizer (except Potash) Manufacturing · Medicine Hat · AB
Canadian Fertilizers Limited1,655,832.8
2024Shand Power Station
Fossil-Fuel Electric Power Generation · Estevan · SK
Saskatchewan Power Corporation1,587,911.1
2024TransCanada Pipeline, Ontario
Pipeline Transportation of Natural Gas · Kenora · ON
TRANSCANADA PIPELINES LIMITED1,567,887.3
2024Cascade Power Project
Fossil-Fuel Electric Power Generation · Yellowhead County · AB
Cascade Power Project Limited Partnership1,493,101.1
2024Napanee Generating Station
Fossil-Fuel Electric Power Generation · Bath · ON
Portlands Energy Centre LP1,471,876.5
2024Edmonton Refinery
Petroleum Refineries · Sherwood Park · AB
Suncor Energy Products Partnership1,453,065.9
2024Sunrise Thermal
In-situ oil sands extraction · Fort Mckay · AB
Cenovus Energy Inc.1,435,445.3
2024Queen Elizabeth Power Station
Fossil-Fuel Electric Power Generation · Saskatoon · SK
Saskatchewan Power Corporation1,427,429.8
2024Muskeg River Cogeneration Plant
Fossil-Fuel Electric Power Generation · Fort Mcmurray · AB
Heartland Generation Ltd.1,404,293.5
2024Sarnia Refinery Plant
Petroleum Refineries · Sarnia · ON
Imperial Oil1,329,468.8
2024Edmonton Hydrogen Facility
Industrial Gas Manufacturing · Edmonton · AB
Air Products Canada Ltd.1,325,912.6
2024Tufts Cove Generating Station
Fossil-Fuel Electric Power Generation · Dartmouth · NS
Nova Scotia Power Incorporated1,307,581.8
2024Usine McInnis
Cement Manufacturing · Port-Daniel-Gascons · QC
St Marys Cement Inc, Usine McInnis1,304,383.9
2024MEG Christina Lake Cogeneration Facility
In-situ oil sands extraction · Regional Municipality Of Wood Buffalo · AB
MEG Energy Corp.1,277,178
2024MEG Christina Lake Regional Project
In-situ oil sands extraction · Regional Municipality Of Wood Buffalo · AB
MEG Energy Corp.1,242,504.9
2024Raffinerie Jean-Gaulin
Petroleum Refineries · Lévis · QC
VALERO ENERGY INC.1,223,746.9
2024Raffinerie de Montreal
Petroleum Refineries · Montreal · QC
Suncor Energy Products Partnership1,216,179.9
2024Halton Hills Generating Station
Fossil-Fuel Electric Power Generation · Halton Hills · ON
Portlands Energy Centre LP1,208,341.3
2024TransCanada Pipeline, Saskatchewan
Pipeline Transportation of Natural Gas · Burstall · SK
TRANSCANADA PIPELINES LIMITED1,200,665.7
Source: Greenhouse Gas Reporting Program (GHGRP) – emissions by facility, 2004–present — Environment and Climate Change Canada · Licence: Open Government Licence – Canada 2.0 · retrieved 2026-10-18 · Official source ↗
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