Nitrogen Oxides

Nitrogen oxide (NOx) emissions are produced as part of the complex combustion chemistry that occurs in a boiler, as nitrogen and oxygen, present in air, are broken apart and combined in different combinations. Nitrogen oxides are a contributor to acid rain, smog and also play a role in reducing the earth’s ozone layer.

NOx emissions have decreased 36% since the 2004 peak. These reductions have been achieved through the phased implementation of low NOx combustion firing systems at various facilities. This initiative, completed in 2008, allows NSPI to achieve compliance with a new NOx emission cap, beginning in 2009, of 21,360 tonnes, as outlined in the provincial Air Quality Regulations.

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