Louisville Gas & Electric (LG&E) is a utilities company based in Louisville, Kentucky. A subsidiary of PPL Corporation through the LG&E and KU Energy subsidiary, LG&E serves over 350,000 electric and over 300,000 natural gas customers, covers an area of 700 square miles (1800 km²), and has a total regulated electric generation capacity of 3,514 megawatts.
LG&E was formed in 1838 as Louisville Gas and Water, but dropped its plans to provide water utilities in 1842 changing its name simply to Louisville Gas. LG&E was originally formed by investors with the intention of providing gas-fired street lighting which had been mandated in order to help prevent crime. In 1890 LG&E (Louisville Gas at this point) amended its charter to buy stock in electric companies and acquired Louisville Electric light. In 1913, Louisville Gas, Louisville Lighting, and Kentucky Heating merged to form Louisville Gas & Electric (LG&E). 
In 1990, LG&E reorganized itself as a holding company LG&E Energy Corporation. In 1998, LG&E Energy merged with the other major electric utility in Kentucky, Kentucky Utilities. In 2000, LG&E Energy was bought by British utility company Powergen. In 2002, Powergen was bought by the German company E.ON. In 2003, LG&E Energy changed its name to E.ON US. Finally, in 2010, E.ON US was bought by PPL Corporation. PPL changed the name of the company to LG&E and KU Energy LLC.
The current electric generating stations serving the region include two coal-fired plants (Trimble County Generating Station and Mill Creek Station), one natural gas/fuel oil combustion turbine, one hydroelectric plant (Ohio Falls Station), two natural gas facilities (Muldraugh and Magnolia Compressor Stations) and one natural gas combined cycle facility (Cane Run Station).
Acquisition by PPL Corporation
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- Data from E.ON U.S. (formerly LG&E Energy) Archived 2008-10-11 at the Wayback Machine
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- "LG&E Power Plant Information". Archived from the original on 2011-07-10. Retrieved 2007-07-19.
- "WAVE-TV: "LG&E, KU Sold to PA Company"".
- "PPL Completes Acquisition of Two Kentucky Utility Companies". PPL Newsroom.