Factorial Energy: Funding, Investors & Team (Sep 2026)
Factorial Energy ("Factorial") has pioneered a new solid-state electrolyte material battery technology, FEST™ (Factorial Electrolyte System Technology™). Factorial will bring a more powerful battery product with longer range and higher degree of safety to the global electric vehicle (EV) market.
Factorial Energy has raised $300M across 4 funding rounds on record, the most recent an undisclosed round of $100M announced in Jun 2026.
That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.
Factorial Energy Company Profile and Key Stats
Latest funding round on record: Jun 2026.
Factorial Energy Funding Rounds
2 of 4 rounds were announced without a disclosed amount and are excluded from the total.
Factorial Energy raised $200M in a Series D announced in Jan 2022.
4 years later, an undisclosed round was announced in Jan 2026 with no disclosed amount.
2 months later, an undisclosed round was announced in Mar 2026 with no disclosed amount.
3 months later, an undisclosed round of $100M was announced in Jun 2026.
Factorial Energy Founders and Leadership Team
Contact details for the Factorial Energy team: 1 of 1 has an email address on file.
Start 14-day free trial →Factorial Energy Funding Compared to Other Energy Startups
Factorial Energy's latest round of $100M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.
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Factorial Energy Funding FAQs
What does Factorial Energy do?
Factorial Energy ("Factorial") has pioneered a new solid-state electrolyte material battery technology, FEST™ (Factorial Electrolyte System Technology™). Factorial will bring a more powerful battery product with longer range and higher degree of safety to the global electric vehicle (EV) market.
How much funding has Factorial Energy raised?
Factorial Energy has raised $300M across 4 rounds on record. The most recent is an undisclosed round of $100M announced in Jun 2026.
When did Factorial Energy last raise funding?
Factorial Energy's most recent funding round on record is an undisclosed round of $100M, announced in Jun 2026.
Who is the CEO of Factorial Energy?
Siyu Huang is listed as CEO at Factorial Energy.
Where is Factorial Energy headquartered?
Factorial Energy is based in Woburn, Massachusetts, United States.
How many employees does Factorial Energy have?
Factorial Energy is in the 101-250 employee band.
How does Factorial Energy's funding compare to other Energy startups?
Factorial Energy's latest round of $100M 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 Factorial Energy 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 Factorial Energy is left off this page rather than filled in.
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