[1] PPL Corporation was founded as Pennsylvania Power & Light in 1920, the product of a merger of eight smaller Pennsylvania-based utility companies.

The company limited its operations to Pennsylvania until deregulation of electrical utilities in the 1990s encouraged PPL to purchase assets in other states.

[4] In 2011, PPL completed the acquisition of two regulated regional electricity distribution companies in the United Kingdom.

[5] On June 6, 2014, PPL announced it would divest its electrical generation facilities to a newly formed company, Talen Energy.

[6] On June 1, 2015, the Talen spinoff was completed, allowing PPL to concentrate on the transmission and distribution aspects of the electric utility business.

This resulted in a March 18, 2021, announcement of agreements to sell WPD to National Grid plc for £7.8 billion and acquire National Grid's Rhode Island electric and gas utility, the Narragansett Electric Company, for $3.8 billion.

The company has invested billions to improve infrastructure and technology in order to create a smarter, more reliable and resilient energy grid.

On March 1, 2024, PPL Corporation announced that its subsidiary PPL Electric Utilities reached a tentative $9 million agreement to sell its 2 North Ninth St. Tower Building and office complex to Pennsylvania-based developer D&D Realty Group.