Under the Clean Air Act, facilities emitting more than 25,000 tons a year of greenhouse gases will require a permit covering their emissions. Industrial facilities would also obtain construction and operating permits, mandating installation of pollution control devices and energy efficiency measures.

Industrial sources, including petrochemical production and petroleum refineries, are automatically covered under the rule. Small businesses and farms are exempt.

Data collection of carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, sulfur hexafluoride, perflourocarbons, and other fluorinated compounds commences January 1, 2010.

To date Canada does not have regulations or rules for reporting green house gases, and the national inventory threshold starts at 100,000 tonne. Manitoba's Climate Act does not require construction and operating permits for industrial facilities.