Volta SPAC Presentation Deck

Disclaimer PARTICIPANTS IN SOLICITATION Tortoise II, Volta and their directors and executive officers and other persons may be deemed to be participants in the solicitations of proxies from Tortoise Il's shareholders in respect of the Proposed Business Combination and the other matters set forth in the definitive proxy statement. Information regarding Tortoise Il's directors and executive officers is available under the heading "Management" in Tortoise Il's final prospectus filed with the SEC on September 14, 2020. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement relating to the Proposed Business Combination when it becomes available. FINANCIAL INFORMATION; NON-GAAP FINANCIAL MEASURES The financial information and data contained in this Presentation is unaudited and does not conform to Regulation S-X promulgated under the Securities Act of 1933, as amended. Accordingly, such information and data may not be included in, may be adjusted in or may be presented differently in, any proxy statement to be filed by Tortoise Il with the SEC. Some of the financial information and data contained in this Presentation, such as EBIT, EBITDA and EBITDA Margin, have not been prepared in accordance with United States generally accepted accounting principles ("GAAP"). Tortoise II and Volta believe that these non-GAAP financial measures provide useful information to management and investors regarding certain financial and business trends relating to Volta's financial condition and results of operations. Tortoise II and Volta believe that the use of these non-GAAP financial measures provides an additional tool for investors to use in evaluating projected operating results and trends in and in comparing Volta's financial measures with other similar companies, many of which present similar non-GAAP financial measures to investors. Management does not consider these non-GAAP measures in isolation or as an alternative to financial measures determined in accordance with GAAP. The principal limitation of these non-GAAP financial measures is that they exclude significant expenses and income that are required by GAAP to be recorded in Volta's financial statements. In addition, they are subject to inherent limitations as they reflect the exercise of judgments by management about which expenses and income are excluded or included in determining these non-GAAP financial measures. TRADEMARKS AND TRADE NAMES Volta and Tortoise II own or have rights to various trademarks, service marks and trade names that they use in connection with the operation of their respective businesses. This Presentation also contains trademarks, service marks and trade names of third parties, which are the property of their respective owners. The use or display of third parties' trademarks, service marks, trade names or products in this Presentation is not intended to, and does not imply, a relationship with Volta or Tortoise II, or an endorsement or sponsorship by or of Volta or Tortoise II. Solely for convenience, the trademarks, service marks and trade names referred to in this Presentation may appear with the Ⓡ, TM or SM symbols, but such references are not intended to indicate, in any way, that Volta or Tortoise II will not assert, to the fullest extent under applicable law, their rights or the right of the applicable licensor to these trademarks, service marks and trade names. volta Tortoise Acquisition Corp.ll 3

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