That really varies from project to project. I think that, in two of those cases, those were completed projects, with which we will often stay involved post-project. We always try to verify savings at the completion of the project.
Occasionally, clients will want to know what the ongoing performance—in the case of the Vancouver General Hospital project, that was over a million-dollar investment. When you get to numbers that big, there's incentive for customers to make sure they continue to see the benefit.
We have a lot of customers who will pay for one year or more of monitoring and verification after completion. If it's a project that has had incentives, often the utility will mandate that the monitoring and verification take place, after the fact, to validate the savings. In some cases, it's just the customer looking at their energy bills and then concluding that yes, they have saved energy.
It varies a lot from project to project.