Company: FTCI
Filing Date: 2025-05-01
Form Type: S-3
Source: 0001193125-25-109056
Chunk: 72

Company: FTC Solar, Inc.
Filing Date: 2025-05-01
Form: S-3
Chunk 72
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b)                    |
| 107            |     | Filing Fee Table(b)                                                  |

| (a) | To be filed by amendment to the registration statement or incorporated by reference from documents filed or to 
 be filed with the SEC under the Securities Exchange Act of 1934, as amended.                                   |

| (b) | Filed herewith. |

II-5

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, FTC Solar, Inc. certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Austin, State of Texas, on May 1, 2025.

| FTC SOLAR, INC. |     |                                              |
| By:             |     | /s/ Yann Brandt                              |
|                 |     | Name: Yann Brandt                            |
|                 |     | Title: President and Chief Executive Officer |

POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that each person whose signature appears below constitutes and appoints Yann Brandt and Cathy Behnen, and each of them, as his or her true and lawful attorneys-in-factand agents, with full power of substitution for him or her in any and all capacities, to sign (i) any and all amendments (including post-effective amendments) to this registration statement and (ii) any registration statement or post-effective amendment thereto to be filed with the Securities and Exchange Commission pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-factand agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-factand agents, or any of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

| Name