Document and Entity Information
Mar. 10, 2022
Cover [Abstract]  
Entity Registrant Name FUELCELL ENERGY, INC.
Entity Central Index Key 0000886128
Document Type 8-K
Document Period End Date Mar. 10, 2022
Amendment Flag false
Trading Symbol FCEL
Title of 12(b) Security Common Stock, $0.0001 par value per share
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity File Number 1-14204
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 06-0853042
Entity Address, Address Line One 3 Great Pasture Road
Entity Address, City or Town Danbury
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06810
City Area Code 203
Local Phone Number 825-6000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Security12b Title Common Stock, $0.0001 par value per share
Trading Symbol FCEL
Security Exchange Name NASDAQ