Solid Power SPAC Presentation Deck

Disclaimer INDUSTRY AND MARKET DATA Although all information and opinions and or other information expressed in this presentation (this "Presentation"), including market data and other statistical information, were obtained from sources believed to be reliable and are included in good faith, Solid Power, Inc. ("Solid Power" or the "Company") and Decarbonization Plus Acquisition Corporation III ("DCRC") have not independently verified the information and make no representation or warranty, express or implied, as to its accuracy or completeness. Some data is also based on the good faith estimates of Solid Power and DCRC, which are derived from their respective reviews of internal sources as well as the independent sources described above. This Presentation contains preliminary information only, is subject to change at any time and is not, and should not be assumed to be, complete or to constitute all the information necessary to adequately make an informed decision regarding your engagement with Solid Power and DCRC. FORWARD-LOOKING STATEMENTS This Presentation includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), Section 21E of the Securities Exchange Act of 1934 and the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995, each as amended. Forward-looking statements may be identified by the use of words such as "estimate," "plan," "project," "forecast," "intend," "expect," "anticipate," "believe," "seek," or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, but are not limited to, statements regarding estimates and forecasts of other financial and performance metrics and projections of market opportunity and market share. These statements are based on various assumptions, whether or not identified in this Presentation, and on the current expectations of Solid Power's and DCRC's management and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as, and must not be relied on by any investor as, a guarantee, an assurance, a prediction or a definitive statement of fact or probability. Actual events and circumstances are difficult or impossible to predict and will differ from assumptions. Many actual events and circumstances are beyond the control of Solid Power and DCRC. These forward-looking statements are subject to a number of risks and uncertainties, including changes in domestic and foreign business, market, financial, political and legal conditions; the inability of the parties to successfully or timely consummate the proposed business combination between Solid Power and DCRC (the "Proposed Business Combination"), including the risk that any required regulatory approvals are not obtained, are delayed or are subject to unanticipated conditions that could adversely affect the combined company or the expected benefits of the Proposed Business Combination or that the approval of the equity holders of DCRC or Solid Power is not obtained; failure to realize the anticipated benefits of the Proposed Business Combination; risks relating to the uncertainty of the projected financial information with respect to Solid Power; risks related to the rollout of Solid Power's business and the timing of expected business milestones; the effects of competition on Solid Power's business; supply shortages in the materials necessary for the production of Solid Power's products; risks related to original equipment manufacturers and other partners being unable or unwilling to initiate or continue business partnerships on favorable terms; the termination or reduction of government clean energy and electric vehicle incentives; delays in the construction and operation of production facilities; the amount of redemption requests made by DCRC's public equity holders; the ability of DCRC or the combined company to issue equity or equity-linked securities in connection with the Proposed Business Combination or in the future; and those factors discussed below and in DCRC's final prospectus filed with the Securities and Exchange Commission (the "SEC") on March 25, 2021 under the heading "Risk Factors" and other documents of DCRC filed, or to be filed, with the SEC. If any of these risks materialize or our assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that neither DCRC nor Solid Power presently know or that DCRC and Solid Power currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect DCRC's and Solid Power's expectations, plans or forecasts of future events and views as of the date of this Presentation. DCRC and Solid Power anticipate that subsequent events and developments will cause DCRC's and Solid Power's assessments to change. However, while DCRC and Solid Power may elect to update these forward-looking statements at some point in the future, DCRC and Solid Power specifically disclaim any obligation to do so. These forward-looking statements should not be relied upon as representing DCRC's and Solid Power's assessments as of any date subsequent to the date of this Presentation. Accordingly, undue reliance should not be placed upon the forward-looking statements. Neither Solid Power, DCRC, nor any of their respective affiliates have any obligation to update this Presentation. USE OF PROJECTIONS This Presentation contains projected financial information with respect to Solid Power. Such projected financial information constitutes forward-looking information, is for illustrative purposes only and should not be relied upon as necessarily being indicative of future results. The assumptions and estimates underlying such projected financial information are inherently uncertain and are subject to a wide variety of significant business, economic, competitive and other risks and uncertainties that could cause actual results to differ materially from those contained in the projected financial information. See "Forward-Looking Statements" section above as well as the risk factors described below. Actual results may differ materially from the results contemplated by the projected financial information contained in this Presentation, and the inclusion of such information in this Presentation should not be regarded as a representation by any person that the results reflected in such information will be achieved. Neither DCRC's nor Solid Power's independent auditors have audited, reviewed, compiled or performed any procedures with respect to the projections for the purpose of their inclusion in this Presentation, and accordingly, neither of them expressed an opinion or provided any other form of assurance with respect thereto for the purpose of this Presentation. Solid Power | DCRC+ 2