I would say that the groups we've been able to get data from tend to be energy utilities. I will admit that we've targeted utilities because they have very large population bases, and we need large samples to get the optimal mix of what is the best combination of retrofits to recommend to any given house.
It's not for lack of interest. If you were to reach out and email me to tell me there's a first nation that's interested in working with me, I'd be happy to do so.