We've been working very closely with the PBO. Their modelling does work on cash flow. As I mentioned before, because that often comes after the fact, as we're evolving we're changing the model of reimbursement with provinces and territories. We're looking at what we're calling progress billing during the year to try to match more closely what's happening in the ground to the economic reality to be able to flow funds to align with that economic reality. We would do that twice during the year and once at year end. We wouldn't wait until after the projects are completed because that is not a great demonstration of what is happening in the ground.
We've started a pilot project. We've made our first payments with Alberta, based on progress billing under phase two. We've got Saskatchewan and Nova Scotia as part of the pilots. This involves changing accounting systems with municipalities as well so it will come into a phased-in approach over the next couple of years. We are moving forward to try to have a closer reality of the cash flow with the economic activity.
The biggest obstacle with provinces and territories is a large demand, and they have intake process with prioritization. We have to work closely with them to make sure their local realities and needs are served as we're looking at the national outcomes we're trying to achieve.