v3.26.1
Cover
Jul. 08, 2026
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jul. 08, 2026
Entity Registrant Name EOS ENERGY ENTERPRISES, INC.
Entity Central Index Key 0001805077
Amendment Flag false
Entity Emerging Growth Company false
Entity File Number 001-39291
Entity Tax Identification Number 84-4290188
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One Two Allegheny Center
Entity Address, Address Line Two Nova Tower 2
Entity Address, Address Line Three
Entity Address, City or Town Pittsburgh
Entity Address, State or Province PA
Entity Address, Postal Zip Code 15212
City Area Code 732
Local Phone Number 225-8400
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Former Address  
Document Information [Line Items]  
Entity Address, Address Line One 3920 Park Avenue
Entity Address, City or Town Edison
Entity Address, State or Province NJ
Entity Address, Postal Zip Code 08820
Common Stock  
Document Information [Line Items]  
Title of 12(b) Security Common stock, par value $0.0001 per share
Trading Symbol EOSE
Security Exchange Name NASDAQ
Warrant  
Document Information [Line Items]  
Title of 12(b) Security Rights to Purchase Units, each Unit consisting of one share of Common Stock and 0.4388 of a Warrant
Trading Symbol EOSER
Security Exchange Name NASDAQ