| FIRSTENERGY CORP. | ||
| LIST OF SUBSIDIARIES OF THE REGISTRANT | ||
| As of | ||
| December 31, 2023 | ||
| FirstEnergy Service Company - Incorporated in Ohio | ||
| FirstEnergy Transmission, LLC - Organized in Delaware | ||
| FirstEnergy Ventures Corp. - Incorporated in Ohio | ||
| Jersey Central Power & Light Company - Incorporated in New Jersey | ||
Metropolitan Edison Company1 - Incorporated in Pennsylvania | ||
| Monongahela Power Company - Incorporated in Ohio | ||
| Ohio Edison Company - Incorporated in Ohio | ||
Pennsylvania Electric Company1 - Incorporated in Pennsylvania | ||
| The Cleveland Electric Illuminating Company - Incorporated in Ohio | ||
| The Potomac Edison Company - Incorporated in Maryland | ||
| The Toledo Edison Company - Incorporated in Ohio | ||
West Penn Power Company1 - Incorporated in Pennsylvania | ||
1 Merged with and into FirstEnergy Pennsylvania Electric Company on January 1, 2024 | ||