<SEC-DOCUMENT>0001127602-24-006698.txt : 20240223
<SEC-HEADER>0001127602-24-006698.hdr.sgml : 20240223
<ACCEPTANCE-DATETIME>20240223164908
ACCESSION NUMBER:		0001127602-24-006698
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240216
FILED AS OF DATE:		20240223
DATE AS OF CHANGE:		20240223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Boyd Heidi L.
		CENTRAL INDEX KEY:			0002013146
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-21011
		FILM NUMBER:		24672204

	MAIL ADDRESS:	
		STREET 1:		76 S. MAIN ST
		CITY:			AKRON
		STATE:			OH
		ZIP:			44067

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRSTENERGY CORP
		CENTRAL INDEX KEY:			0001031296
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				341843785
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		76 SOUTH MAIN ST
		CITY:			AKRON
		STATE:			OH
		ZIP:			44308-1890
		BUSINESS PHONE:		330-761-7837

	MAIL ADDRESS:	
		STREET 1:		76 SOUTH MAIN ST
		CITY:			AKRON
		STATE:			OH
		ZIP:			44308-1890
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form3.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2024-02-16</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001031296</issuerCik>
        <issuerName>FIRSTENERGY CORP</issuerName>
        <issuerTradingSymbol>FE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002013146</rptOwnerCik>
            <rptOwnerName>Boyd Heidi L.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>76 S. MAIN ST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>AKRON</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44308</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <remarks>The Reporting Person, an employee of Blackstone Inc. (&quot;Blackstone&quot;) or one of its affiliates, is a member of the board of directors of the issuer. The Reporting Person disclaims beneficial ownership of any securities of the issuer that may be deemed to
be beneficially owned by affiliates of Blackstone. Exhibit 24: Power of Attorney (attached)</remarks>

    <ownerSignature>
        <signatureName>/s/ Mary M. Swann, attorney-in-fact</signatureName>
        <signatureDate>2024-02-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
