The provinces get the money and can return it in any way they like - to citizens in the form of tax cuts, to corporations in the form of tax cuts or incentives. The idea is you may use your car less, transit more (if a city-dweller)  and use the money you get back to make your house more energy efficient or spend the money on something you enjoy, or corporations will be more efficient in their operations to burn fewer fossil fuels and will reinvest the money returned to them in technology to reduce emissions, get a cleaner product to market, or expand and hire.
If you have ideas and preferences about how the revenue can be returned to best effect in your province or territory, contact your local MPP and your premier.