Patent ID: 7774245

Claim:
A building management system comprising: a server system configured to perform functions comprising: receiving at the server system, metered energy usage data for a tenant who occupies at least part of a building in accordance with a lease covering at least some metered energy usage by the tenant as part of standard tenant services, the metered energy usage data indicating that usage of metered energy in the at least part of the building comprises an instance of above standard tenant services use that is not covered by the lease; providing, for display at a user interface, a representation of an electronic invoice comprising a line item reflecting a cost associated with the instance of above standard tenant services use and an interactive control; receiving a selection entered at the user interface using the interactive control, the selection comprising an approval of or an adjustment to the line item indicating whether the cost associated with the instance of above standard tenant services use is billed to the tenant in whole, in part, or not at all; and generating a variance report comprising a variance between tenant-incurred costs and tenant-billed costs for above standard tenant services for the building during a time period, the tenant-incurred costs comprising the cost associated with the instance of above standard tenant services use, and the tenant-billed costs comprising an amount billed to the tenant based on the selection.