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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001183309-08-000006.txt : 20080617
<SEC-HEADER>0001183309-08-000006.hdr.sgml : 20080617
<ACCEPTANCE-DATETIME>20080617135001
ACCESSION NUMBER:		0001183309-08-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080616
FILED AS OF DATE:		20080617
DATE AS OF CHANGE:		20080617

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FPL GROUP INC
		CENTRAL INDEX KEY:			0000753308
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				592449419
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		700 UNIVERSE BLVD
		CITY:			JUNO BEACH
		STATE:			FL
		ZIP:			33408
		BUSINESS PHONE:		5616943715

	MAIL ADDRESS:	
		STREET 1:		P O BOX 14000
		CITY:			JUNO BEACH
		STATE:			FL
		ZIP:			33408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TREGURTHA PAUL R
		CENTRAL INDEX KEY:			0001183309

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08841
		FILM NUMBER:		08902754

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		2036257801

	MAIL ADDRESS:	
		STREET 1:		C/O MORMAC MARINE GROUP INC
		STREET 2:		ONE LANDMARK SQUARE SUITE 710
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06901
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-06-16</periodOfReport>

    <issuer>
        <issuerCik>0000753308</issuerCik>
        <issuerName>FPL GROUP INC</issuerName>
        <issuerTradingSymbol>FPL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001183309</rptOwnerCik>
            <rptOwnerName>TREGURTHA PAUL R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MORMAC MARINE GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE LANDMARK SQUARE, SUITE 710</rptOwnerStreet2>
            <rptOwnerCity>STAMFORD</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06901-2608</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Phantom Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8990</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-06-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>67.16</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>525</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Phantom Shares credited to an account for the reporting person pursuant to the FPL Group, Inc. Supplemental Pension Plan for Non-Employee Directors established in connection with the termination of the FPL Group, Inc. Non-Employee Director Retirement Plan.  Accounts are payable in cash at the end of the deferral period.</footnote>
        <footnote id="F2">Phantom Stock Units approximate the number of phantom shares of the Issuer's common stock attributable to phantom units credited to the reporting person's account under the FPL Group, Inc. Deferred Compensation Plan (the &quot;Plan&quot;).  Amounts deferred under the Plan, including amounts attributable to reinvested dividends, are deemed to be invested in a number of unfunded theoretical units equal to the number of units which would have been credited if the deferred amounts had been invested in the Issuer's company stock fund in its Thrift Plan (the &quot;Stock Fund&quot;).  The Stock Fund is accounted for in units of a unitized pool of stock and cash.  Phantom Stock Units are estimated based on the number of shares of the Issuer's common stock in the Stock Fund and the number of theoretical units credited to the reporting person.  Accounts are payable in cash at the end of the deferral period.</footnote>
        <footnote id="F3">Closing price of Issuer's common stock on NYSE on the relevant date (price used to value units in the Stock Fund).</footnote>
        <footnote id="F4">Differences in holdings between any given dates may result from varying percentages of cash and stock held in the Stock Fund on those dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Alissa E. Ballot (Attorney-in-Fact)</signatureName>
        <signatureDate>2008-06-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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