Thank you very much for the question. It's something that I spend a lot of time thinking about.
I mentioned the work we did last year with the IEA, the International Energy Agency, in looking at our potential through 2050. The IEA concluded that the buildings in Canada have the most untapped potential for further lowering greenhouse gas emissions beyond what's already being pursued in looking at the existing framework and going beyond.
That's greater than any other sector in Canada, including transportation and industry, but industry is a close second, particularly when we're looking at resource industries or extractive industries as a source. Canada could lower GHG emission intensity in commercial buildings by 60% by 2050 if all currently available policy tools and technologies were applied, including those focusing on motivating retrofits. We've seen significant returns already—by 23% in this space—but we know there's a significant gap yet to be filled. It's buildings first and industry second, and transportation follows as a close third.