v3.26.1
Cover
Aug. 03, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 03, 2026
Entity File Number 001-39291
Entity Registrant Name EOS ENERGY ENTERPRISES, INC.
Entity Central Index Key 0001805077
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, 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
Entity Emerging Growth Company false
Common stock, par value $0.0001 per share  
Title of 12(b) Security Common stock, par value $0.0001 per share
Trading Symbol EOSE
Security Exchange Name NASDAQ
Warrant Each Whole Warrant Exercisable To Purchase One Share Of Common Stockatanexercisepriceof 5. 481 [Member]  
Title of 12(b) Security Warrant, each whole warrant exercisable to purchase one share of Common Stock at an exercise price of $5.481
Trading Symbol EOSEW
Security Exchange Name NASDAQ