ALLEGHENY ENERGY INC. (AE), incorporated in Maryland in 1925, is a diversified utility holding company which owns directly and indirectly various regulated and non-regulated subsidiaries.

In 1999, AE derived substantially all of its income from the electric utility operations of its direct and indirect regulated and unregulated subsidiaries: Monongahela Power Company, The Potomac Edison Company, West Penn Power Company, Allegheny Generating Company (AGC), Allegheny Energy Supply Company, LLC and Allegheny Ventures, Inc.


Monongahela Power Company.

Monongahela, incorporated in Ohio in 1924, operates its electric distribution system in northern West Virginia and an adjacent portion of Ohio. It also owns generating capacity in Pennsylvania. With the acquisition of the assets of West Virginia Power, Monongahela will now serve about 385,000 customers in a service area of about 13,000 square miles with a population of about 815,000. The seven largest communities served have populations ranging from 10,900 to 33,900. This service area has navigable waterways and substantial deposits of bituminous coal, glass sand, natural gas, rock salt, and other natural resources. Its service area's principal industries produce coal, chemicals, iron and steel, fabricated products, wood products, and glass. There are two municipal electric distribution systems and two rural electric cooperative associations in its service area. Except for one of the cooperatives, in 1999 they purchased all of their power from Monongahela.


The Potomac Edison Company.

Potomac Edison, incorporated in Maryland in 1923 and in Virginia in 1974, operates in portions of Maryland, Virginia, and West Virginia. It also owns generating capacity in Pennsylvania. Potomac Edison serves about 398,600 customers in a service area of about 7,300 square miles with a population of about 782,000. The six largest communities served have populations ranging from 11,900 to 40,100. Potomac Edison's service area's principal industries produce aluminum, cement, fabricated products, rubber products, sand, stone, and gravel. There are four municipal electric distribution systems in its service area, all of which purchased power from Potomac Edison in 1999, and six rural electric cooperatives, one of which purchased power from Potomac Edison in 1999.


West Penn Power Company.

West Penn, incorporated in Pennsylvania in 1916, is an electricity delivery company in southwestern and north and south-central Pennsylvania. West Penn's service area contains about 9,900 square miles with a population of about 1,399,000. The 10 largest communities served by West Penn have populations ranging from 11,200 to 38,900. West Penn's service area has navigable waterways and substantial deposits of bituminous coal, limestone, and other natural resources. Its service area's principal industries produce steel, coal, fabricated products, and glass.


Allegheny Generating Company (AGC).

Allegheny Generation Company, organized in 1981 under the laws of Virginia, is jointly owned by Monongahela (27%); Potomac Edison (28%); and Allegheny Energy Supply (45%). AGC has no employees, and its only asset is a 40% undivided interest in the Bath County (Virginia) pumped-storage hydroelectric station. AGC's 840-megawatt (MW) share of capacity of the station is sold to its three parents.


Allegheny Energy Supply Company, LLC.

Allegheny Energy Supply, incorporated in Delaware in 1999, owns and operates generating capacity in southwestern Pennsylvania and West Virginia. Allegheny Energy Supply sells retail electric energy throughout Pennsylvania (excluding by temporary regulatory proscription those customers with locations wholly inside West Penn's service area) and in other states throughout the region that have customer choice, and wholesale electric energy anywhere.


Allegheny Ventures, Inc.