"Changes in emissions of air pollutants from electric utilities, Canada, 1990 to 2024",,,, ,,,, Year,Sulphur oxides (percentage change from 1990 level),Sulphur oxides (emissions in kilotonnes),Nitrogen oxides (percentage change from 1990 level),Nitrogen oxides (emissions in kilotonnes) 1990,0,618.4,0,257.0 1991,-4,592.1,-2,250.9 1992,-1,610.7,2,262.9 1993,-12,547.2,-5,243.0 1994,-9,559.8,-7,240.0 1995,-14,532.6,-3,248.1 1996,-12,542.2,5,269.0 1997,-4,591.3,12,287.7 1998,-2,603.6,21,310.1 1999,-3,601.1,19,306.4 2000,0,619.2,27,326.8 2001,1,623.9,22,313.0 2002,1,624.3,23,314.9 2003,2,630.4,14,293.0 2004,-6,581.5,4,267.5 2005,-16,521.9,-1,253.7 2006,-26,458.9,-13,224.3 2007,-20,491.9,-7,238.8 2008,-31,427.5,-12,225.1 2009,-38,384.0,-15,218.0 2010,-46,333.9,-9,233.7 2011,-53,293.2,-22,199.8 2012,-54,284.2,-35,166.3 2013,-55,278.2,-37,162.0 2014,-56,269.2,-35,167.2 2015,-59,251.5,-41,152.3 2016,-59,253.1,-41,152.4 2017,-60,245.4,-44,145.0 2018,-64,220.2,-50,129.0 2019,-67,205.4,-51,124.8 2020,-73,168.2,-60,101.9 2021,-73,169.0,-61,100.1 2022,-75,152.3,-63,95.2 2023,-78,134.8,-65,90.3 2024,-82,108.5,-68,81.1 ,,,, "Note: Carbon monoxide, fine particulate matter, volatile organic compounds and ammonia are not shown in the table due to their low share (≤ 1%) of total emissions in 2024. The indicator excludes emissions from industries that generate electricity and heat as a supporting activity rather than as their primary purpose.",,,, Source: Environment and Climate Change Canada (2026) Air Pollutant Emission Inventory (https://www.canada.ca/en/environment-climate-change/services/pollutants/air-emissions-inventory-overview.html).,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,