Abstract: A system, computer-implemented method, and a computer program product are provided for a utility bill audit. Measured data is input from meters. Utility provider information is input. The utility provider information includes utility provider sub-costs and utility provider variables. System data is generated based on the measured data. The system data includes system sub-costs and system variables. If a utility provider sub-cost differs from a corresponding system sub-cost by more than a selected sub-cost error threshold, whether a utility provider variable differs from a corresponding system variable by more than a selected variable error threshold is determined. A user interface outputs a notice regarding whether utility provider information differs from corresponding system data.