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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0000080420</issuerCik>
      <issuerName>POWELL INDUSTRIES INC</issuerName>
      <secFileNumber>001-12488</secFileNumber>
      <issuerAddress>
        <com:street1>8550 MOSLEY DR</com:street1>
        <com:street2>POST OFFICE BOX 12818</com:street2>
        <com:city>HOUSTON</com:city>
        <com:stateOrCountry>TX</com:stateOrCountry>
        <com:zipCode>77075</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7139446900</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>POWELL THOMAS W</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>60000</noOfUnitsSold>
      <aggregateMarketValue>20616600.00</aggregateMarketValue>
      <noOfUnitsOutstanding>11987838</noOfUnitsOutstanding>
      <approxSaleDate>11/07/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>12/31/1980</acquiredDate>
      <natureOfAcquisitionTransaction>Employee Compensatin</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>60000</amountOfSecuritiesAcquired>
      <paymentDate>12/31/1980</paymentDate>
      <natureOfPayment>Employee Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Thomas Powell</name>
        <address>
          <com:street1>PO Box 300</com:street1>
          <com:city>Giddings</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>78942</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/15/2024</saleDate>
      <amountOfSecuritiesSold>2451</amountOfSecuritiesSold>
      <grossProceeds>642383.44</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Thomas Powell</name>
        <address>
          <com:street1>PO Box 300</com:street1>
          <com:city>Giddings</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>78942</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/10/2024</saleDate>
      <amountOfSecuritiesSold>7549</amountOfSecuritiesSold>
      <grossProceeds>1929173.51</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Thomas Powell</name>
        <address>
          <com:street1>PO Box 300</com:street1>
          <com:city>Giddings</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>78942</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/10/2024</saleDate>
      <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
      <grossProceeds>2569045.92</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Thomas Powell</name>
        <address>
          <com:street1>PO Box 300</com:street1>
          <com:city>Giddings</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>78942</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/09/2024</saleDate>
      <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
      <grossProceeds>2517692.35</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Thomas Powell</name>
        <address>
          <com:street1>PO Box 300</com:street1>
          <com:city>Giddings</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>78942</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/08/2024</saleDate>
      <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
      <grossProceeds>2461292.96</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Thomas Powell - 30,000 shares TWP Holdings Ltd. Thomas Powell - 30,000 share individual account</remarks>
    <noticeSignature>
      <noticeDate>11/07/2024</noticeDate>
      <signature>Thomas Powell</signature>
    </noticeSignature>
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144
0001219199
XXXXXXXX
LIVE
0000080420
POWELL INDUSTRIES INC
001-12488
8550 MOSLEY DR
POST OFFICE BOX 12818
HOUSTON
TX
77075
7139446900
POWELL THOMAS W
10% Stockholder
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
60000
20616600.00
11987838
11/07/2024
NASDAQ
Common
12/31/1980
Employee Compensatin
Issuer
N
60000
12/31/1980
Employee Compensation
N
Thomas Powell
PO Box 300
Giddings
TX
78942
Common
10/15/2024
2451
642383.44
Thomas Powell
PO Box 300
Giddings
TX
78942
Common
10/10/2024
7549
1929173.51
Thomas Powell
PO Box 300
Giddings
TX
78942
Common
10/10/2024
10000
2569045.92
Thomas Powell
PO Box 300
Giddings
TX
78942
Common
10/09/2024
10000
2517692.35
Thomas Powell
PO Box 300
Giddings
TX
78942
Common
10/08/2024
10000
2461292.96
Thomas Powell - 30,000 shares TWP Holdings Ltd. Thomas Powell - 30,000 share individual account
11/07/2024
Thomas Powell