<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:ns1="http://www.sec.gov/edgar/common">
  <schemaVersion>X0202</schemaVersion>
<headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0000927971</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>03/31/2026</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001144800</issuerCik>
        <issuerName>TRANSALTA CORP</issuerName>
        <issuerCusips>
          <issuerCusipNumber>89346D107</issuerCusipNumber>
        </issuerCusips>
        <issuerPrincipalExecutiveOfficeAddress>
          <ns1:street1>TRANSALTA PLACE</ns1:street1>
          <ns1:street2>1400, 1100 - 1ST STREET S.E.</ns1:street2>
          <ns1:city>CALGARY</ns1:city>
          <ns1:stateOrCountry>A0</ns1:stateOrCountry>
          <ns1:zipCode>T2G 1B1</ns1:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Bank of Montreal</reportingPersonName>
      <citizenshipOrOrganization>XX</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>17669715</soleVotingPower>
        <sharedVotingPower>57490</sharedVotingPower>
        <soleDispositivePower>17701192</soleDispositivePower>
        <sharedDispositivePower>57490</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>17758682</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.98</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>
      <reportingPersonName>BANK OF MONTREAL HOLDING INC.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>8725878</soleVotingPower>
        <sharedVotingPower>57490</sharedVotingPower>
        <soleDispositivePower>8757355</soleDispositivePower>
        <sharedDispositivePower>57490</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8814845</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>2.97</classPercent>
      <typeOfReportingPerson>BK</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>
      <reportingPersonName>BMO NESBITT BURNS INC. WEALTH MANAGEMENT</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>4714482</soleVotingPower>
        <sharedVotingPower>39740</sharedVotingPower>
        <soleDispositivePower>4745959</soleDispositivePower>
        <sharedDispositivePower>39740</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>4785699</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>1.62</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BMO NESBITT BURNS SECURITIES LTD.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>31477</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>31477</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>0.01</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BMO PRIVATE INVESTMENT COUNSEL INC.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>3668</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>3668</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3668</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>0</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BMO ASSET MANAGEMENT INC.</reportingPersonName>
      <citizenshipOrOrganization>A6</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>4710814</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>4710814</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>4710814</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>1.58</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BMO NESBITT BURNS INC.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>4011396</soleVotingPower>
        <sharedVotingPower>17750</sharedVotingPower>
        <soleDispositivePower>4011396</soleDispositivePower>
        <sharedDispositivePower>17750</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>4029146</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>1.35</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>TRANSALTA CORP</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>TRANSALTA PLACE, 1400, 1100 - 1ST STREET S.E., CALGARY, ALBERTA, CANADA
T2G 1B1</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Bank of Montreal

BANK OF MONTREAL HOLDING INC.

BMO NESBITT BURNS INC. WEALTH MANAGEMENT

BMO NESBITT BURNS SECURITIES LTD.

BMO PRIVATE INVESTMENT COUNSEL INC.

BMO ASSET MANAGEMENT INC.

BMO NESBITT BURNS INC.</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1 First Canadian Place
Toronto, Ontario, Canada
M5X1A1</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Bank of Montreal - UNKNOWN

BANK OF MONTREAL HOLDING INC. - CANADA (FEDERAL LEVEL)

BMO NESBITT BURNS INC. WEALTH MANAGEMENT - CANADA (FEDERAL LEVEL)

BMO NESBITT BURNS SECURITIES LTD. - CANADA (FEDERAL LEVEL)

BMO PRIVATE INVESTMENT COUNSEL INC. - CANADA (FEDERAL LEVEL)

BMO ASSET MANAGEMENT INC. - ONTARIO, CANADA

BMO NESBITT BURNS INC. - CANADA (FEDERAL LEVEL)</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>BD</typeOfPersonFiling>
        <typeOfPersonFiling>BK</typeOfPersonFiling>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned> 17,758,682
</amountBeneficiallyOwned>
        <classPercent>5.98</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>Bank of Montreal - 17,669,715

BANK OF MONTREAL HOLDING INC. - 8,725,878

BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 4,714,482

BMO NESBITT BURNS SECURITIES LTD. - 0

BMO PRIVATE INVESTMENT COUNSEL INC. - 3,668

BMO ASSET MANAGEMENT INC. - 4,710,814

BMO NESBITT BURNS INC. - 4,011,396</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>Bank of Montreal - 57,490

BANK OF MONTREAL HOLDING INC. - 57,490

BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 39,740

BMO NESBITT BURNS SECURITIES LTD. - 0

BMO PRIVATE INVESTMENT COUNSEL INC. - 0

BMO ASSET MANAGEMENT INC. - 0

BMO NESBITT BURNS INC. - 17,750</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>Bank of Montreal - 17,701,192

BANK OF MONTREAL HOLDING INC. - 8,757,355

BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 4,745,959

BMO NESBITT BURNS SECURITIES LTD. - 31,477

BMO PRIVATE INVESTMENT COUNSEL INC. - 3,668

BMO ASSET MANAGEMENT INC. - 4,710,814

BMO NESBITT BURNS INC. - 4,011,396</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>Bank of Montreal - 57,490

BANK OF MONTREAL HOLDING INC. - 57,490

BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 39,740

BMO NESBITT BURNS SECURITIES LTD. - 0

BMO PRIVATE INVESTMENT COUNSEL INC. - 0

BMO ASSET MANAGEMENT INC. - 0

BMO NESBITT BURNS INC. - 17,750</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>See Documents.</subsidiaryIdentificationAndClassification>
      </item7>
      <item8>
        <notApplicableFlag>N</notApplicableFlag>
        <identificationAndClassificationOfGroupMembers>Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer.
</identificationAndClassificationOfGroupMembers>
      </item8>
      <item9>
        <notApplicableFlag>N</notApplicableFlag>
        <groupDissolutionNotice>Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer.
</groupDissolutionNotice>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Bank of Montreal</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BANK OF MONTREAL HOLDING INC.</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BMO NESBITT BURNS INC. WEALTH MANAGEMENT</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BMO NESBITT BURNS SECURITIES LTD.</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BMO PRIVATE INVESTMENT COUNSEL INC.</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BMO ASSET MANAGEMENT INC.</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BMO NESBITT BURNS INC.</reportingPersonName>
      <signatureDetails>
        <signature>Kathryn Cenac</signature>
        <title>Managing Director - Regulatory Solutions Group</title>
        <date>05/13/2026</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
