Antora Energy
Sunnyvale, US · Founded 2018 · 275 employees on LinkedIn · 22 known investors
Find your way into Antora Energy
2,056 people in our graph share verified history with the Antora Energy team — schools, employers, funds. One of them is your warm intro.
Deep Nisharunlockedknows Andrew Ponec · together at Stanford University (overlapped)
×7knows the team · via Stanford University
×3knows the team · via University of California, Berkeley
knows the team · via Massachusetts Institute of Technology
Antora manufactures thermal battery systems for long-duration energy storage, serving manufacturers and data centers seeking to tap into low-cost renewable power. The company designs and produces American-made thermal batteries at scale to provide affordable, reliable energy storage for industrial and large-scale energy users.
Founders & leadership
Antora Energy was founded in 2018 by Andrew Ponec, David Bierman, Justin Briggs, David Bierman, Ph.D., and Justin Briggs, Ph.D..
AP
Andrew PonecinChief Executive Officer, co-founderHe previously co-founded and led Dragonfly Systems, a solar electronics startup acquired by SunPower, where he then worked as an engineer. He studied at Stanford University, doing undergraduate research in materials science and electrical engineering, and later returned as a visiting scholar.
DB
David BiermaninFounder at Antora
JB
Justin BriggsinFounder at Antora
DB
David Bierman, Ph.D.Chief Commercial Officer, co-founder
JB
Justin Briggs, Ph.D.Chief Operating Officer, co-founder
Board
CK
CD
SH
Scott HimmelbergerBoard director
JW
John WoolardBoard director
JF
BP
Investors · 22
Temasek✓ verifiedSingapore
Congruent VenturesSan Francisco · $100K – $5M
Creative Destruction Lab (CDL)Toronto · $50K – $250K
Fifty YearsSan Francisco · $250K – $2M
GS FuturesSeoul
ISVWest Palm Beach
Loup VenturesMinneapolis
LOWERCARBONJackson · $1M – $50M
Lowercarbon CapitalLos Angeles · $100K – $5M
The Westly GroupMenlo Park · $500K – $15M
7percent VenturesreportedLondon · $250K – $2M
BHP Venturesreported
BlackRockreportedWilmington
Breakthrough Energy Venturesreported · 3 sourcesBoston · $500K – $50M
EclipsereportedPalo Alto
Eclipse VenturesreportedPalo Alto · $200K – $5Mvia Joe Fath · board
Energy Impact PartnersreportedNew York · $5M – $20M
G2 Venture PartnersreportedPortola Valley · $15M – $25M
Kleiner PerkinsreportedMenlo Park · $500K – $15M
Overture Climatereported · 2 sourcesSanta Monica · $1M – $3M
Trust Venturesreported · 2 sourcesAustin
Also in the syndicate · 1
Decarbonization Partnerslead
Funding
SEC filings, press & company announcements$529.3M disclosed across 2 of 3 rounds · 2024–2026
▶$457.6MraisedAug 2026 · 24 investors · OtherRule 506(b)
▶$457.6MraisedAug 2026 · 24 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Andrew PonecExecutive Officer, Director
- Justin BriggsExecutive Officer, Director
- David BiermanExecutive Officer, Director
- Christina KarapatakiDirector
- Clay DumasDirector
- Scott HimmelbergerDirector
- John WoolardDirector
- Joe FathDirector
- Brook PorterDirector
- Offering amount
- $550M
- Amount sold
- $457.6M
- First sale
- Jul 2026
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$71.7MraisedNov 2025 · 26 investors · OtherRule 506(b)
▶$71.7MraisedNov 2025 · 26 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Andrew PonecExecutive Officer
- Offering amount
- $76.7M
- Amount sold
- $71.7M
- Minimum investment
- $74K
- First sale
- Jul 2025
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
2 people who came through Antora went on to found or lead other companies.
Competitors · 2
by search overlap
Anthro Energy21 shared keywordsAnthro Energy develops advanced electrolytes and high-performance battery cells to improve energy density, safety, and form factor in battery technology. The company serves the electrification market and operates a production facility in California.
ADP17 shared keywordsADP provides cloud-based human capital management solutions that integrate payroll, HR, talent management, time and attendance, tax, and benefits administration for businesses globally. The company serves as a comprehensive provider of HCM software and business outsourcing services with analytics and compliance expertise.
Companies competing with Antora Energy for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Antora has raised $550 Million in new Series C funding - intelligence360intelligence360.news · Aug 2026Frequently asked questions
- What does Antora Energy do?
- Antora manufactures thermal battery systems for long-duration energy storage, serving manufacturers and data centers seeking to tap into low-cost renewable power. The company designs and produces American-made thermal batteries at scale to provide affordable, reliable energy storage for industrial and large-scale energy users.
- Who founded Antora Energy?
- Antora Energy was founded by Andrew Ponec, David Bierman, Justin Briggs, David Bierman, Ph.D., Justin Briggs, Ph.D. in 2018.
- Who are Antora Energy's investors?
- Antora Energy's investors include Temasek, Congruent Ventures, Creative Destruction Lab (CDL), Fifty Years, GS Futures, ISV, Loup Ventures, LOWERCARBON and 13 more.
- How much funding has Antora Energy raised?
- Antora Energy has disclosed $529.3M raised across 2 of its 3 known rounds.
- Where is Antora Energy headquartered?
- Antora Energy is headquartered in Sunnyvale, US.