Giant Eagle is a grocery store chain with stores located in Indiana, Maryland, Ohio, Pennsylvania, and West Virginia. Recently, it installed refrigerator doors on the dairy section in many of its stores. Previously, the dairy section was refrigerated but had no doors.

The refrigerator doors will reportedly use 78% less energy than the amount of energy used when there are no doors on the dairy section.

How might Giant Eagle utilize some of the capital budgeting tools mentioned in this chapter to help them determine whether or not they install the doors?