<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001483001</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001474735</issuerCik>
      <issuerName>GENERAC HOLDINGS INC.</issuerName>
      <secFileNumber>001-34627</secFileNumber>
      <issuerAddress>
        <com:street1>S45 W29290 HIGHWAY 59</com:street1>
        <com:city>WAUKESHA</com:city>
        <com:stateOrCountry>WI</com:stateOrCountry>
        <com:zipCode>53187</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>888 436-3722</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Jagdfeld Aaron</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Chief Executive Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Georgeson Securities Corp.</name>
        <address>
          <com:street1>144 Fernwood Avenue</com:street1>
          <com:city>Edison</com:city>
          <com:stateOrCountry>NJ</com:stateOrCountry>
          <com:zipCode>08837</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>20000</noOfUnitsSold>
      <aggregateMarketValue>2940000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>62193347</noOfUnitsOutstanding>
      <approxSaleDate>07/03/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>07/03/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Generac Holdings, Inc.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>20000</amountOfSecuritiesAcquired>
      <paymentDate>07/03/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Aaron P. Jagdfeld</name>
        <address>
          <com:street1>c/o Generac Holdings, Inc.</com:street1>
          <com:street2>S45 W29290 Highway 59</com:street2>
          <com:city>Waukesha</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>53189</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>04/03/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>547400.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Aaron P. Jagdfeld</name>
        <address>
          <com:street1>c/o Generac Holdings, Inc.</com:street1>
          <com:street2>S45 W29290 Highway 59</com:street2>
          <com:city>Waukesha</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>53189</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>05/01/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>510800.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Aaron P. Jagdfeld</name>
        <address>
          <com:street1>c/o Generac Holdings, Inc.</com:street1>
          <com:street2>S45 W29290 Highway 59</com:street2>
          <com:city>Waukesha</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>53189</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>06/01/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>540600.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>On securities to be sold, the date of acquisition &amp; date of payment are various dates.</remarks>
    <noticeSignature>
      <noticeDate>07/03/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>11/14/2022</planAdoptionDate>
      </planAdoptionDates>
      <signature>Conformed Signature on File</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
