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        <filer>
          <filerCredentials>
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            <ccc>XXXXXXXX</ccc>
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        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
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      <issuerInfo>
        <issuerCik>0001844862</issuerCik>
        <issuerName>Solid Power, Inc.</issuerName>
        <secFileNumber>001-40284</secFileNumber>
        <issuerAddress>
          <com:street1>486 S. PIERCE AVE., SUITE E</com:street1>
          <com:city>LOUISVILLE</com:city>
          <com:stateOrCountry>CO</com:stateOrCountry>
          <com:zipCode>80027</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>(303) 219-0720</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Buettner-Garrett Joshua</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>187500</noOfUnitsSold>
        <aggregateMarketValue>268125.00</aggregateMarketValue>
        <noOfUnitsOutstanding>178962858</noOfUnitsOutstanding>
        <approxSaleDate>08/19/2024</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>08/19/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Options Granted - 03/20/2015</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>187500</amountOfSecuritiesAcquired>
        <paymentDate>08/19/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Joshua Buettner-Garrett</name>
          <address>
            <com:street1>486 S. Pierce Ave.</com:street1>
            <com:street2>Suite E</com:street2>
            <com:city>Louisville</com:city>
            <com:stateOrCountry>CO</com:stateOrCountry>
            <com:zipCode>80027</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>05/21/2024</saleDate>
        <amountOfSecuritiesSold>187500</amountOfSecuritiesSold>
        <grossProceeds>315075.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Joshua Buettner-Garrett</name>
          <address>
            <com:street1>486 S. Pierce Ave.</com:street1>
            <com:street2>Suite E</com:street2>
            <com:city>Louisville</com:city>
            <com:stateOrCountry>CO</com:stateOrCountry>
            <com:zipCode>80027</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>06/14/2024</saleDate>
        <amountOfSecuritiesSold>187500</amountOfSecuritiesSold>
        <grossProceeds>311193.75</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Joshua Buettner-Garrett</name>
          <address>
            <com:street1>486 S. Pierce Ave.</com:street1>
            <com:street2>Suite E</com:street2>
            <com:city>Louisville</com:city>
            <com:stateOrCountry>CO</com:stateOrCountry>
            <com:zipCode>80027</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>07/09/2024</saleDate>
        <amountOfSecuritiesSold>187500</amountOfSecuritiesSold>
        <grossProceeds>312056.25</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>08/19/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>09/01/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Joshua R Buettner-Garrett </signature>
      </noticeSignature>
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text: 144
  0001880162
  XXXXXXXX
  LIVE
  0001844862
  Solid Power, Inc.
  001-40284
  486 S. PIERCE AVE., SUITE E
  LOUISVILLE
  CO
  80027
  (303) 219-0720
  Buettner-Garrett Joshua
  Officer
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  187500
  268125.00
  178962858
  08/19/2024
  NASDAQ
  Common
  08/19/2024
  Options Granted - 03/20/2015
  Issuer
  N
  187500
  08/19/2024
  Cash
  N
  Joshua Buettner-Garrett
  486 S. Pierce Ave.
  Suite E
  Louisville
  CO
  80027
  Common
  05/21/2024
  187500
  315075.00
  Joshua Buettner-Garrett
  486 S. Pierce Ave.
  Suite E
  Louisville
  CO
  80027
  Common
  06/14/2024
  187500
  311193.75
  Joshua Buettner-Garrett
  486 S. Pierce Ave.
  Suite E
  Louisville
  CO
  80027
  Common
  07/09/2024
  187500
  312056.25
  08/19/2024
  09/01/2023
  /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Joshua R Buettner-Garrett