Power

The Morristown Power System (MUS) serves near 14,500 customers in the city of Morristown, TN. The system load peak is 167 MW, all served by the Tennessee Valley Authority through two points of delivery.  MPS receives power at 161-kV from TVA at three delivery point substations and operates its own 69-kV sub-transmission system serving ten distribution substations in a redundant scheme.  MPS has twenty-eight 13.8-kV distribution feeders that feed power throughout the City. All together, MPS operates and maintains 39 miles of transmission line and 300 miles of distribution line.

The City of Morristown has three industrial parks, the most recent near Interstate I-81.  Industrial/Commercial loads account or over 75% of energy sold. After years of steady load growth in the 4% range, MUS load growth flat lined along with the economy from 2007-2010.  However, our industrial load has returned and several major industry have announced expansion over the next few years.

All distribution feeders are protected by state-of-the-art digital relays, providing the optimum in feeder coordination.  MPS also has over thirty 3-phase reclosers on distribution circuits to isolate faults and provide increased reliability to industrial customers.

MPS monitors electrical system performance using a SCADA system at our Power Operations Center where dispatchers have real-time information of feeder loading and device status.  This system allows remote operation of equipment, alarm history and valuable performance information. Smart metering is currently being installed for real time interaction with customers for improved outage management, power quality monitoring, peak load control and new products for cost savings.  Both the SCADA and Smart metering are enabled across our high speed Fiber to the Home optical network.