Antora Energy at a glance
As of- Headquarters
- Sunnyvale, California, USA[4]
- [1] Latest valuation: Bloomberg, July 30, 2026
- [2] Equity raised: Sum of the 2 sourced equity rounds in the funding history below (debt, tender offers and rumored rounds excluded), July 30, 2026
- [3] Lead investors: Bloomberg, July 30, 2026
- [4] Headquarters: SEC EDGAR Form D (retrieved August 4, 2026)
What Antora Energy does
Antora Energy makes thermal batteries that store energy as heat in factory-built modules and deliver heat and power to industrial plants, data centers and the grid.[1] The company is based in San Jose, California, where it has expanded its factory into a three-building manufacturing campus.[2] Antora plans to use the money to build large projects and a second U.S. manufacturing hub.[2] The company says it deployed a 5 gigawatt-hour system in South Dakota, at POET's bioprocessing plant in Big Stone City, that went from initial construction to delivering energy in under 12 months.[2] In October 2026 Antora announced a 5.8 gigawatt-hour thermal storage project at Pratt Energy's biorefinery in Pratt, Kansas.[3],[1]
Leadership
- Andrew Ponec is co-founder and CEO, and Justin Briggs is co-founder and chief operating officer.[1]
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Recent changes
- Jul 30, 2026Jul 30, 2026Raised $550M Series C at a $2.47 billion valuation Bloomberg
- Jul 30, 2026Jul 30, 2026New investor: Lowercarbon Capital Bloomberg
- Jul 30, 2026Jul 30, 2026New investor: Breakthrough Energy Ventures Bloomberg
- Jul 30, 2026Jul 30, 2026New investor: Eclipse Ventures Bloomberg
- Jul 30, 2026Jul 30, 2026Antora Energy Closes $550M for Thermal Batteries Pulse story
Earlier changes (1)
- Dec 2022Dec 2022Raised $50M Series A Yahoo Finance
Funding history
2 equity events · newest first · sources dated per row| Date | Round | Amount | Valuation | Lead investors | Source |
|---|---|---|---|---|---|
| Jul 30, 2026 | Series C | $550M | $2.47 billionpost-money | G2 Venture PartnersunverifiedEclipse Venturesunverified WithBreakthrough Energy VenturesunverifiedLowercarbon CapitalunverifiedImpact Science VenturesunverifiedTrust VenturesunverifiedDecarbonization Partners | BloombergPulse story |
| Dec 2022 | Series A | $50M | — | — | Yahoo Finance |
Equity only. “Equity raised” above sums the rounds with a dated, linked source; rumored rounds, tender offers and secondary sales are listed but not counted, and debt financing is listed separately.
How Antora Energy has been funded
It raised a $50 million Series A in December 2022, when it also acquired Medley Thermal, and a $150 million Series B led by Decarbonization Partners in 2024.[4],[5] On July 30, 2026, Antora closed a $550 million Series C co-led by G2 Venture Partners and Eclipse, with existing investors including Breakthrough Energy Ventures and Lowercarbon Capital.[2],[1] The company says the round brings its total corporate and project financing to around $1 billion.[1]
Investors
Latest Pulse
- Aug 2, 2026Why Infrastructure Keeps Winning Venture's Biggest Checks2026's largest venture rounds keep going to capital-intensive, physical-infrastructure bets -- fusion, satellites, thermal storage, AI compute -- rather than software, a pattern that has held for months and looks structural, not seasonal.→
- Aug 1, 2026Why 2026's VC Boom Keeps Getting More ConcentratedGlobal startup funding hit a record $510 billion in H1 2026, but the gains are concentrating in fewer, much larger checks -- a pattern this week's megarounds from Commonwealth Fusion, K2 Space and Antora Energy all reinforce.→
- Jul 30, 2026Commonwealth Fusion Raises $1B More, Total Hits $4BCommonwealth Fusion Systems raised another $1 billion from pension funds, sovereign wealth funds and industrial partners, bringing total capital raised to $4 billion as it builds Sparc and designs its first commercial Arc power plant.→
- Jul 30, 2026Antora Energy Closes $550M for Thermal BatteriesAntora Energy closed a $550 million Series C, one of the year's largest cleantech rounds, to scale thermal batteries that store electricity as heat for industrial and data-center customers.→
Coverage Timeline
newest firstAll Coverage
FUNDING
Why 2026's VC Boom Keeps Getting More Concentrated
Global startup funding hit a record $510 billion in H1 2026, but the gains are concentrating in fewer, much larger checks -- a pattern this week's megarounds from Commonwealth Fusion, K2 Space and Antora Energy all reinforce.
Antora Energy Closes $550M for Thermal Batteries
FUNDING$550M Series C
Antora Energy Closes $550M for Thermal Batteries
Antora Energy closed a $550 million Series C, one of the year's largest cleantech rounds, to scale thermal batteries that store electricity as heat for industrial and data-center customers.
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Antora Energy FAQ
How much has Antora Energy raised?
Antora Energy raised a $50 million Series A in December 2022, when it also acquired Medley Thermal, and a $150 million Series B led by Decarbonization Partners in 2024.[4],[5]
Who invested in Antora Energy?
On July 30, 2026, Antora closed a $550 million Series C co-led by G2 Venture Partners and Eclipse, with existing investors including Breakthrough Energy Ventures and Lowercarbon Capital.[2],[1]
Who founded Antora Energy?
Andrew Ponec is co-founder and CEO, and Justin Briggs is co-founder and chief operating officer.[1]
Where is Antora Energy headquartered?
Antora Energy is based in San Jose, California, where it has expanded its factory into a three-building manufacturing campus.[2]
What does Antora Energy do?
Antora Energy makes thermal batteries that store energy as heat in factory-built modules and deliver heat and power to industrial plants, data centers and the grid.[1]
What is Antora Energy's valuation?
Antora Energy was last valued at $2.47 billion in its July 2026 Series C, according to Bloomberg (July 30, 2026).
References
researched 2026-10-23Sources & methodologyshow
Where these figures come from
- Bloombergmajor outlet1 fact
- Yahoo Financeresearch database1 fact
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.