Eos Energy Enterprises
Eos Energy Enterprises (EOSE) is a publicly traded Long-Duration Storage company founded in 2008 and based in Edison, USA.
Eos Energy manufactures zinc-based battery systems for long-duration utility-scale energy storage. Market cap ~$100M; production scaling at Pennsylvania factory; targeting 3–12 hour duration market.
Aqueous zinc chemistry offers low-cost, safe, long-duration storage alternative to lithium for multi-hour applications.
At a glance
Total raised
Undisclosed
Headcount
501-1k
Headquarters
Edison
Founded
2008
Status
Public
Latest valuation
$500M
Where Eos Energy Enterprises ranks
Top 25 Energy companies →Funding history
Total raised
—
Rounds tracked
13
Latest stage
IPO
Latest valuation
$500M
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Jul 8, 2026 | Post-IPO | $75M | — | Hudson Bay Capital Management |
| Nov 24, 2025 | Post-IPO | $458M | — |