The Five Errors on Every Commercial Utility Bill.

After reviewing more than 16,000 commercial buildings' utility accounts over 35+ years, billing errors sort consistently into five categories. Understanding these categories is the first step toward knowing what to look for in your own accounts.

The first category is rate schedule misclassification — accounts placed on the wrong rate schedule at setup, often decades ago, that have never been reviewed. The second is demand charge methodology errors — incorrect application of the billing demand calculation, which can inflate the demand portion of the bill by 10-30%.

The third category is tax and exemption failures — applicable exemptions that were never applied, or that lapsed when account details changed. The fourth is meter and allocation errors — consumption attributed to the wrong account, meter reading errors, or incorrect interval data processing.

The fifth — and often most valuable — category is tariff optimization errors: accounts that are correctly billed on their current rate schedule, but that are on the wrong schedule entirely given the facility's load profile and available tariff options. These errors are typically not refundable but correcting them produces ongoing savings that often exceed the refund from the other four categories combined.