I'll take a first crack at that just to say that we have talked about, on a national level, looking at 20% wind penetration, but it will vary from jurisdiction to jurisdiction. The ability to integrate the variable sources will vary depending on the level of interconnectedness, on the other sources of generation.
What's important to think about going forward is that we're going to be making a tonne of investment in the electricity system in Canada over the next few years. We're going to be investing in new transmission capacity because we've under-invested for a long, long time. We're going to be investing in new sources of generation. If you're looking at a future where you're thinking, “I want to try to maximize and facilitate the integration of renewable sources, not just wind”, that actually has an impact on some of the choices you're going to make with respect to transmission investments, what other types of generation you might find.
One of the big challenges for us, as Canada, in terms of moving towards a sustainable energy future is to ensure that we overlay those investment decisions with that renewable energy lens to ensure that, with some of these investments, which are all long-lived investments--if you build a transmission line, it's going to be there a long time, a generating station for years--you make sure that you do that in a way that doesn't close options for you. In terms of bringing renewable energy online, it should be opening options and allowing us to maximize potential.