Existing contract tariffs

It is not possible to check utility bills effectively without a clear record of current contract tariffs against which to verify them. The 'tariff' may be a simple all-inclusive fixed price per unit, as is often quoted for gas supplies, or it may be a complex multi-rate seasonal time of day (SToD) tariff with transportation charged separately on its own peculiar tariff. One of the more difficult situations to deal with is oil, whose price may vary from one delivery to another.
Elements of the utility management process
Top-level objectives