The Canadian building code doesn't really have to change per se, but there are things that could be done with the regulations around building to make it easier to do. There are a lot of regulatory barriers to putting things on people's roofs. Most of those are not federal regulations, though; they generally tend to be more municipal or provincial.
But there is an opportunity for governments to use regulations as a way to drive the growth of the business. A good example is that in the State of Hawaii, starting this year, you can no longer get a building permit unless you include solar thermal with the new building. It's a way for them to drive the adoption of renewable energy without having to dip into government coffers to do it.