That's exactly it. That's the recommendation in our first recommendation for the capital class allowance 43.1 and 43.2. It's for investment to make buildings solar-panel ready. What that means is exactly what you're saying: the right pitch and the right angle. You might not be putting the solar panels on right now, but you actually invest when you're building the house so it's set up.
On October 1st, 2014. See this statement in context.