The federal government outlined its plan to meet climate change commitments Friday, and it includes steady increases in the controversial federal carbon tax that is being challenged by the Saskatchewan government and reviewed by the Supreme Court of Canada. 

The total cost of the plan outlined by the federal government is $15 billion, aiming to reduce emissions across the country by 32 percent by 2030, which is in-line with a commitment of a 30 percent reduction by 2030 as part of the Paris agreement.  

The plan includes scheduled increases in the carbon tax, which will increase by $10 a year until it reaches $50 a tonne in 2022. After that, it will increase by $15 a tonne, reaching $170 by 2030. Figures released by the federal government show that would equate to an extra 27.6 cents per litre of gas at the pumps in 2030. 

The carbon tax itself is currently being reviewed by the Supreme Court of Canada, after Saskatchewan and Alberta challenged the constitutionality of the tax. The provinces argue the tax, which is applied only to provinces that don’t have carbon plans that meet the criteria the federal government has laid out, oversteps Ottawa’s jurisdiction, while the federal government counters the tax as a necessity to combat climate change. Hearings were held in September, with a decision expected to come in the new year. 

The federal government didn’t outline how their plan would be impacted if the Supreme Court rules in favour of Saskatchewan and Alberta.