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PJM Requires Delmarva Power to Conserve Customers’ Energy

Wednesday, July 18, 2012

SALISBURY, Md. Delmarva Power asks all of its customers to conserve energy today as high temperatures are forecasted to affect the entire mid-Atlantic region.

For customers participating in Delmarva Power’s Energy Wise Rewards program in Maryland, today will be a Critical Peak Savings Day, and a PJM-mandated conservation event will be called from 3 p.m. to 9 p.m. This means that Delmarva Power will cycle the participants’ air conditioner compressors off for short intervals during these hours. Because the air conditioner fans will continue to run, however, most customers will not notice a temperature change in their home, and those who do should experience only a 1- to 3-degree change. It may take up to a half-hour after the event ends at 9 p.m. for air conditioners to resume normal operations.

Energy Wise Rewards is a voluntary program that offers customers a choice of a programmable thermostat or an outdoor switch, which the utility installs at no charge to the customer. During summer periods of peak electric demand, Energy Wise Rewards works to reduce electricity usage by cycling central air conditioner compressors off for short periods of time during periods of peak electricity use. Maryland customers will receive a bill reduction in return for allowing Delmarva Power to cycle their air conditioners a few days each year. Customers can get more information about Energy Wise Rewards at delmarva.com/rewards or by calling 1-866-353-5798.

Energy Wise Rewards participants may not override this PJM-mandated conservation event. PJM, the regional transmission organization for the mid-Atlantic region, has determined that energy use must be reduced throughout the region to keep the electricity supply stable and prevent rolling brown-outs. PJM manages the high-voltage electric grid and the wholesale electricity market that serves 13 states and the District of Columbia.

Demand for electricity is expected to increase as the excessive heat and humidity continue. Delmarva Power asks all customers to conserve electricity. Customers can take simple conservation steps:

· Set air-conditioning thermostats at 78 degrees and use an electric fan, which doesn’t require as much energy, and the air will seem cooler without sacrificing comfort.

· Keep window shades, blinds, or drapes closed to block the sunlight during the hottest part of the day and to retain cooler air inside your home or business.

· Limit the use of electrically heated water and turn off non-essential appliances and as many lights as possible.

· Limit opening refrigerator or freezer doors.

· Postpone using high-energy appliances like electric stoves, washing machines, dishwashers and dryers until the evening.

For more energy-saving information and additional updates, visit www.delmarva.com, follow us on Facebook and Twitter at DelmarvaConnect and download our mobile app at www.delmarva.com/mobileapp .

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Delmarva Power, a public utility owned by Pepco Holdings, Inc. (NYSE: POM), provides safe and reliable energy to more than 500,000 electric delivery customers in Delaware and Maryland and over 124,000 natural gas delivery customers in northern Delaware.