PPL Energy Services Holding LLC history

Allentown and Bethlehem were the largest cities in its territory, with populations of 90,000 and 60,000, respectively, in 1930.

By 1939, 57 percent of farms in PP & L territory had electricity, compared with a United States average of 28 percent.

By the following year, the company had 487,000 customers, and revenue of $62 million. It also sold its steam heating operations in Wilkes-Barre, Pennsylvania, in 1951, leaving it with steam operations in Harrisburg and Scranton, Pennsylvania.

By 1964, 29 percent of the company's electric revenue came from industrial customers.

By 1972, PP & L owned seven steam, two hydroelectric, 11 combustion turbine, and five diesel-engine generating stations with a total capacity of about four million kilowatts.

In 1973, it sold 6.5 billion kilowatt-hours to other companies in the pool and earned $67 million on revenue of $385 million.

One year later, the firm secured more than one million customers and the Pennsylvania Public Utility Commission (PUC) approved a $101 million annual rate increase for PP & L that went into effect in 1982.

1983: Construction on the Susquehanna nuclear power plant is complete.

Encouraged by the initial response, PP & L expanded the program in 1987.

1994: PP & L Resources Inc. is formed as a holding company.

In 1995, subsidiary Spectrum Energy Services Corporation was created to manage new business opportunities.

Two years later, in 1997, Pennsylvania Power & Light Company changes its name to PP&L, Inc.

In 1998, PP & L Global and Empresas Emel bought a 75 percent stake in Distributidora de Electricidad del Sur S.A. de C.V., an electrical distribution company in El Salvador.