Certainly as we look at it in the context of the clean fuels standard in particular in terms of the work we've done with Environment and Climate Change Canada and identifying compliance pathways, continuous improvements in reducing energy consumption and improving energy efficiency in refineries will ultimately reduce the carbon intensity of the fuel we produce. Opportunities that do align with some of the limited opportunities around the output-based pricing system will, again, assist in reducing the carbon intensity of the fuel we produce. Certainly, blending biofuels, biocomponents, whether that's renewable diesel or whether it's ethanol, presents other compliance opportunities, but they come at a cost.
The challenge we have with regulatory mechanisms like the clean fuel standard or renewable fuel standards is that they are not particularly transparent with respect to the costs. We don't see how this is the price of carbon and how that translates to the price of a litre of fuel.
We've seen many studies in Canada done by independent think tanks over the last number of years that point to a very high price on cost per tonne mitigated of renewable fuel blending, in the hundreds of dollars per tonne, which aren't transparent to the average citizen, and, hence, don't influence their ability to make decisions.
Certainly, it's a compliance pathway. It's work we're doing already. The ethanol blending level in Canada today probably averages better than 7% through various renewable fuel band-aids, but it's an expensive cost per tonne of GHG mitigation measure.