Sure, I can speak to that.
Our leases are typically five-year leases for our commercial portfolio. As I mentioned, about 80% of our commercial portfolio is leased. To advance the energy efficiency initiatives, the building operations teams that are present in the buildings will identify infrastructure updates that will support energy efficiency, and we'll enter that information into a rolling spreadsheet that's created through the year under what's called the routine capital program. It's the same routine capital program that's used to identify when roofs need to be replaced for our own facilities, etc. It doesn't matter if it's an owned building or a leased building; that's identified when it's entered onto that database. But if there's an energy efficiency opportunity in a lease base, it's incorporated into that list. The information is then provided to our lease services department, who consider the information when they're renegotiating the lease for that space every five years.