Media and apparatus for managing usage of utilities are disclosed. Generally, each involves receiving representation of utility service usage at a load, receiving and storing in a storage device a usage range representation comprising at least one expected value of utility input to the load and/or at least one expected value of output from the load, and producing a control signal for use by a utility service controller when usage is outside of usage range representation. Control signal is operable to cause the utility service controller to regulate or interrupt the supply of the utility service to the load.