On this point, as others have noted, the bill has a similar structure to that found in the Kyoto Protocol Implementation Act, in that the onus is placed on the government to come up with regular climate plans. The government of the day has full freedom to choose the mix of spending measures, regulations, market-based instruments, provincial agreements, and so on that it sees fit as the most appropriate way for it to meet the targets in the plan, which the bill requires the government to set forth.
On December 11th, 2007. See this statement in context.