In real-time mode, Optimization is capable of making use of bellwether meter voltages. The voltages are used as an input to the optimization algorithm to ensure that voltage violations are not created on the secondary network serving customer meters. By using voltage telemetry, the Oracle Utilities Network Management System can begin to learn the difference between the solved power flow voltage versus the actual telemetered voltage and make estimates as to what the secondary service drop may be between a service transformer and the bellwether meter location. If utilities strategically choses bellwether meter locations at points that experience the lowest voltage on a feeder, it will help ensure that the optimization does not create voltage issues in scenarios like CVR where the voltage is lowered to reduce demand. Oracle recommends that utilities chose two to three metering points per regulation zone on a feeder. These voltages can come from field devices (sectionalizer, recloser, capacitor, and so forth) that are capable of telemetering voltage but would be most useful at customer meters.