content: <?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>0001647775</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>Forsythe Patrick John</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>65855</noOfUnitsSold>
        <aggregateMarketValue>9587367.80</aggregateMarketValue>
        <noOfUnitsOutstanding>60614444</noOfUnitsOutstanding>
        <approxSaleDate>05/23/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 02/18/2016</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>9733</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/01/2017</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>12234</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/01/2018</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>18490</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/01/2019</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>17654</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/01/2020</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>6692</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/23/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/01/2023</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1052</amountOfSecuritiesAcquired>
        <paymentDate>05/23/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>05/23/2024</noticeDate>
        <signature>/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Patrick J Forsythe</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001647775
  XXXXXXXX
  LIVE
  0001474735
  GENERAC HOLDINGS INC.
  001-34627
  S45 W29290 HIGHWAY 59
  WAUKESHA
  WI
  53187
  888 436-3722
  Forsythe Patrick John
  Officer
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  65855
  9587367.80
  60614444
  05/23/2024
  NYSE
  Common
  05/23/2024
  Option Granted - 02/18/2016
  Issuer
  N
  9733
  05/23/2024
  Cash
  Common
  05/23/2024
  Option Granted - 03/01/2017
  Issuer
  N
  12234
  05/23/2024
  Cash
  Common
  05/23/2024
  Option Granted - 03/01/2018
  Issuer
  N
  18490
  05/23/2024
  Cash
  Common
  05/23/2024
  Option Granted - 03/01/2019
  Issuer
  N
  17654
  05/23/2024
  Cash
  Common
  05/23/2024
  Option Granted - 03/01/2020
  Issuer
  N
  6692
  05/23/2024
  Cash
  Common
  05/23/2024
  Option Granted - 03/01/2023
  Issuer
  N
  1052
  05/23/2024
  Cash
  Y
  05/23/2024
  /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Patrick J Forsythe