The carbon tax started July 1, 2008 at a rate of $10 per metric ton and will rise by C$5 a year for the next four years, reaching C$30 per metric ton by 2012.
The law allows the Lieutenant Governor in Council to wave or reduce the tax on those burning coal or other fossil fuels for a number of reasons. Carbon capture and storage is specifically listed as a reason to have the tax waved. That provision can be found under Part 12 Regulations, Section 84.