v3.26.3
Cover
Sep. 30, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 30, 2026
Entity File Number 001-40350
Entity Registrant Name FTC Solar, Inc.
Entity Central Index Key 0001828161
Entity Tax Identification Number 81-4816270
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 10900 Stonelake Blvd
Entity Address, Address Line Two Suite 100
Entity Address, Address Line Three Quarry Oaks II Building
Entity Address, City or Town Austin
Entity Address, State or Province TX
Entity Address, Postal Zip Code 78759
City Area Code 512
Local Phone Number 481-4271
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.0001 par value
Trading Symbol FTCI
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false