1. A graphical user interface, comprising: a service point identifier, wherein the service point identifier is associated with: a service point; a first set of values including a first usage value for a resource for a first period of time, and the first set of values including one or more of a first account identifier, a first meter identifier or a site address; and a second set of values including a second usage value for the resource for a second period of time, and the second set of values including one or more of a second account identifier, a second meter identifier, or the site address; the association of the service point identifier with the service point, the first set of values, and the second set of values being stored in a memory module; a chart that, in response to a selection of the service point identifier, displays: the first usage value for the resource delivered to the service point associated with the service point identifier, the first usage value associated with an invoice from a first account; and the second usage value for the resource delivered to the service point, the second usage value associated with an invoice from a second account, the second usage value measured at least in part by the at least one meter associated with the second meter identifier.