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Private company

The Illuminating Company

The Illuminating Company is an electric company based in Cleveland, Ohio, United States, founded in 1892.1 It is part of FirstEnergy.1

Last updated Oct 21, 2026.

Overview

1892Founded1

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Corporate structure

The Illuminating Company is part of a group headed by FirstEnergy. 24 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • FirstEnergy Columbus, Ohio, United States
    • The Illuminating Company Cleveland, United States
    • Met-Ed Subsidiary · Reading, United States
    • Penn Power Subsidiary · Philadelphia, Pennsylvania, United States
    • West Penn Power Subsidiary · Greensburg, United States
    • FirstEnergy Pennsylvania Holding Company - Incorporated in Subsidiary · Pennsylvania, United States
    • FirstEnergy Service Company - Incorporated in Subsidiary · Ohio, United States
    • FirstEnergy Transmission Subsidiary · United States
    • FirstEnergy Transmission, LLC - Organized in Subsidiary · Delaware, United States
    • FirstEnergy Ventures Corp. - Incorporated in Subsidiary · Ohio, United States
    • JERSEY CENTRAL POWER & LIGHT COMPANY Subsidiary · Morristown, New Jersey, United States
    • Jersey Central Power & Light Company - Incorporated in Subsidiary · New Jersey, United States
    • Mon Power Subsidiary · United States
    • Monongahela Power Company - Incorporated in Subsidiary · Ohio, United States
    • Ohio Edison Subsidiary · United States
    • Ohio Edison Company - Incorporated in Subsidiary · Ohio, United States
    • Penelec Subsidiary
    • PENNSYLVANIA ELECTRIC COMPANY Subsidiary · Erie, Pennsylvania, United States
    • Potomac Edison Subsidiary · United States
    • The Cleveland Electric Illuminating Company - Incorporated in Subsidiary · Ohio, United States
    • The Potomac Edison Company - Incorporated in Subsidiary · Maryland, United States
    • The Toledo Edison Company - Incorporated in Subsidiary · Ohio, United States
    • Toledo Edison Subsidiary · United States
    • FIRSTENERGY CORP. SAVINGS PLAN Fund · Akron, Ohio, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

Former owners and parents

  • Centerior 1986 to 1997

From Wikidata.1

Timeline

  1. 1997Acquired Acquired by FirstEnergy1
  2. 1986Acquired Acquired by Centerior1
  3. 1892Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1