On June 1, customers at FirstEnergy's Pennsylvania utilities -- Met-Ed, Penelec, Penn Power and West Penn Power -- will see their electric rate for generation supply increase anywhere from 20 percent to 50 percent if they continue to buy their power supply from the local utility instead of shopping for a competitive supplier.

Met-Ed, Penelec, Penn Power and West Penn Power don't own power plants anymore and merely buy power on the open market for their customers. Customers have the right to choose their electric supplier and can opt to purchase their power supplies from an alternative electric supplier, instead of defaulting to the utilities' open market purchases.  No matter who you buy your power from, the local utility still delivers power to you over its existing wires, with no interruption in service.

For those customers who don't shop for a competing electric supplier, the utilities charge an electric rate for "default service" called the Price to Compare, which changes every three months. And on June 1, residential and commercial customers at the FirstEnergy utilities will see 20 percent to 50 percent increases in the Price to Compare, according to official Prices to Compare just published by the utilities.

West Penn Power residential customers are seeing the biggest spike.  The West Penn Power residential (Rate RS10) Price to Compare is increasing 50 percent on June 1, from 4.932 cents per kilowatt-hour (kWh), to 7.4 cents per kWh.

West Penn Power commercial customers (General Service & General Power Small Service) will see a 22 percent increase in the Price to Compare, from 5.746 cents per kWh to 7.017 cents per kWh.

At Met-Ed, the June 1 residential (RS) Price to Compare will increase 25 percent, to 9.725 cents per kWh, from 7.753 cents per kWh.  The Met-Ed commercial Price to Compare (GS-Small and GS-Medium) will increase slightly to 7.81 cents per kWh.

Penelec residential and commercial customers will both see a 20 percent increase in their electric rate if they continue to purchase default service from the utility.  The Penelec residential (RS) Price to Compare will increase to 9.254 cents per kWh on June 1, from 7.709 cents per kWh.  The Penelec commercial Price to Compare (GS-Small and GS-Medium) will increase to 8.816 cents per kWh from 7.337 cents per kWh.

Finally, at Penn Power, residential and commercial customers will see a 30 percent increase in the Price to Compare.  The Penn Power residential (RS) Price to Compare will increase to 8.154 cents per kWh on June 1, from 6.227 cents per kWh.  The Penn Power commercial Price to Compare (GS & GSM) will increase to 7.407 cents per kWh, from 5.693 cents per kWh.

Met-Ed (Metropolitan Edison) serves 560,000 customers in eastern Pennsylvania, including the city of Reading and counties such as York, Berks, Lebanon, Adams, and parts of Dauphin and Lancaster, among others.

Penelec (Pennsylvania Electric Company) serves approximately 590,000 customers in 31 central and western Pennsylvania counties, including customers in Altoona, Johnstown, and Erie.

Penn Power serves 161,000 customers in western Pennsylvania, including outlying areas north of Pittsburgh.

West Penn Power (Allegheny) serves 720,000 customers in western Pennsylvania, including outlying areas surrounding Pittsburgh.

Rates are also expected to rise for PPL and Duquesne Light customers starting June 1.