Eos: Funding, Investors & Team (Oct 2026)
Eos Energy Enterprises is accelerating the shift to clean energy with positively ingenious solutions that transform how the world stores power. Eos' breakthrough Znyth aqueous zinc battery was designed to overcome the limitations of conventional lithium-ion technology. Safe, scalable, efficient, sustainable—and manufactured in the U.S—it's the core of its innovative systems that today provide utility, industrial, and commercial customers with a proven, reliable energy storage alternative.
Eos has raised $235M across 3 funding rounds on record, the most recent an undisclosed round of $50.0M announced in Dec 2023.
That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.
Eos Company Profile and Key Stats
Latest funding round on record: Dec 2023.
Eos Funding Rounds
Eos raised $100M in a Post-IPO Debt announced in Jul 2021.
1.1 years later, a Post-IPO Debt of $85.0M was announced in Aug 2022.
1.3 years later, an undisclosed round of $50.0M was announced in Dec 2023.
Eos Founders and Leadership Team
Contact details for the Eos team: 1 of 2 have an email address on file.
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Eos' latest round of $50.0M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.
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Eos Funding FAQs
What does Eos do?
Eos Energy Enterprises is accelerating the shift to clean energy with positively ingenious solutions that transform how the world stores power. Eos' breakthrough Znyth aqueous zinc battery was designed to overcome the limitations of conventional lithium-ion technology. Safe, scalable, efficient, sustainable—and manufactured in the U.S—it's the core of its innovative systems that today provide utility, industrial, and commercial customers with a proven, reliable energy storage alternative.
How much funding has Eos raised?
Eos has raised $235M across 3 rounds on record. The most recent is an undisclosed round of $50.0M announced in Dec 2023.
When did Eos last raise funding?
Eos' most recent funding round on record is an undisclosed round of $50.0M, announced in Dec 2023.
Who founded Eos?
FundedIQ lists Kevin Kouessabio (Founder) at Eos.
Who is the CEO of Eos?
Joe Mastrangelo is listed as CEO at Eos.
Where is Eos headquartered?
Eos is based in Edison, New Jersey, United States.
How many employees does Eos have?
Eos is in the 251-500 employee band.
How does Eos' funding compare to other Energy startups?
Eos' latest round of $50.0M is above the $15M median round size for Energy companies on FundedIQ across 2,284 tracked companies over the last two years.
About FundedIQ's Eos Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Eos is left off this page rather than filled in.
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