<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-06-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001532619</issuerCik>
        <issuerName>Power REIT</issuerName>
        <issuerTradingSymbol>PW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001479527</rptOwnerCik>
            <rptOwnerName>Lesser David H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>301 WINDING ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OLD BETHPAGE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11804</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common</value>
            </securityTitle>
            <transactionDate>
                <value>2013-06-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3791</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.43</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>288698</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">A non qualified stock option to acquire 100,000 common shares (&quot;Option&quot;) and 20,000 restricted shares of common stock (&quot;Restricted Stock&quot;) were awarded on August 13, 2012, pursuant to the Trust's 2012 Equity Incentive Plan. The Option and Restricted Stock awards vest in three-equal annual installments beginning with the first anniversary of the respective grants. The Options have a 10-year term and a strike price equal to the closing price of the stock on August 13, 2012.</footnote>
        <footnote id="F2">After giving effect to the reported transaction(s), Mr. Lesser has beneficial ownership of 288,698 shares: 147,297 directly (including equity grants), 87,138 through Hudson Bay Partners LP, a wholly owned affiliate, and 54,263 through HBP PW LLC, an affiliate managed by David H. Lesser. Approximately 99.8% of the share capital of HBP PW LLC has been provided by a third-party investor.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>david h lesser</signatureName>
        <signatureDate>2013-06-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
