FORM 10-K DATED DECEMER 31, 2005

Company

FIRSTENERGY CORP

Filed

March 2, 2006

Period of Report

December 31, 2005

Accession Number

0001031296-06-000044

A 10-K is a company's comprehensive annual report, required by the SEC. It includes audited financial statements, a description of the business, risk factors, and management's discussion of results. Learn more about 10-K filings →