Antora Thermal Battery
Factory-built modular thermal battery that stores electricity as heat in solid carbon blocks for industrial heat and power.
Fielded
Startup · United States
Antora Energy
HQ San Jose, CaliforniaFounded 2018201-500 employees
Stores electricity as heat in carbon blocks to deliver industrial heat and power.
StartupFielded
Oct 1, 2026CompanyAntora and Pratt Energy Announce Nearly 6 Gigawatt-Hour Thermal Battery Project to Deliver Affordable Energy and Strengthen Kansas EconomyAntora EnergySep 10, 2026CompanyGrafTech and Antora Energy Partner to Power American Industry with CarbonAntora EnergyJul 30, 2026Company (high significance)Antora Closes $550 Million in Series C Funding to Meet Surging Energy Demand and Reindustrialize AmericaAntora EnergyMay 19, 2026Company (high significance)Introducing Project Big StoneAntora Energy
- Oct 1, 2026CompanyAntora EnergyAntora and Pratt Energy Announce Nearly 6 Gigawatt-Hour Thermal Battery Project to Deliver Affordable Energy and Strengthen Kansas Economy
- Sep 10, 2026CompanyAntora EnergyGrafTech and Antora Energy Partner to Power American Industry with Carbon
- Jul 30, 2026Company (high significance)Antora EnergyAntora Closes $550 Million in Series C Funding to Meet Surging Energy Demand and Reindustrialize America
- May 19, 2026Company (high significance)Antora EnergyIntroducing Project Big Stone
Funding3 rounds · $750M
- Equity raised
- $750M
- Latest
- $550MSeries C · Jul 30, 2026
Feb 16, 2022Jul 30, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Jul 30, 2026 | Series C | $550M | — | Eclipse Ventures, G2 Venture Partners | — | Confirmed |
| Feb 22, 2024 | Series B | $150M | — | Decarbonization Partners | BHP Ventures, Breakthrough Energy Ventures, Emerson Collective, Grok Ventures, GS Futures, Lowercarbon Capital, NextEra Energy Resources, Overture Ventures, The Nature Conservancy, Trust Ventures | Confirmed |
| Feb 16, 2022 | Series A | $50.0M | — | Breakthrough Energy Ventures, Lowercarbon Capital | BHP Ventures, Fifty Years, Grok Ventures, Impact Science Ventures, Overture Ventures, Shell Ventures, Trust Ventures | Confirmed |
- $550MJul 30, 2026
- Series BLed by Decarbonization PartnersWith BHP Ventures, Breakthrough Energy Ventures, Emerson Collective, Grok Ventures, GS Futures, Lowercarbon Capital, NextEra Energy Resources, Overture Ventures, The Nature Conservancy, Trust VenturesConfirmed$150MFeb 22, 2024
- Series AWith BHP Ventures, Fifty Years, Grok Ventures, Impact Science Ventures, Overture Ventures, Shell Ventures, Trust VenturesConfirmed$50.0MFeb 16, 2022
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems1
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Supply Chain2 facilities
Facilities2
| Facility | Kind | Location | Status | Confidence |
|---|---|---|---|---|
| Antora headquarters | Headquarters | Sunnyvale, CA, United States | Operating | Confirmed |
| Antora San Jose manufacturing campus | Factory | San Jose, CA, United States | Operating | Confirmed |
- Antora headquartersHeadquarters · Sunnyvale, CA, United StatesOperatingConfirmed
- Antora San Jose manufacturing campusFactory · San Jose, CA, United StatesOperatingConfirmed
People7
- Andrew Ponec
Co-founder
- David Bierman
Co-founder
- Justin Briggs
Co-founder
- Andrew Ponec
Chief Executive Officer
- David Bierman
Chief Commercial Officer
- Jerome Pereira
VP, Operations
- Justin Briggs
Chief Operating Officer
Hiring Observations10 observed listings
San Jose, CA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Remote, USA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Electrical Engineering Manager ↗
San Jose, CA · Engineering
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Energy Project Development Manager ↗
Remote, USA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Sunnyvale, CA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Pratt, Kansas · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Inbound Quality Technician (Swing Shift) ↗
San Jose, CA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Big Stone City, SD · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Manager / Senior Manager, State Policy & Government Affairs ↗
Remote, USA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
Materials R&D Lab Technician ↗
San Jose, CA · Other
Open when checked · Greenhouse public employer job board
Checked Oct 13, 2026
A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.
Company Metrics
Employee-profile counts reflect LinkedIn profiles associated with the company, not verified headcount. One observation establishes a baseline; it does not establish growth.
Sources13
Show all 13 sources and supporting evidence
Profile3
- 1CompanyAntora Energy | LinkedIn
Supports Organization · founded year, Organization · hq city, Organization · hq region
“Headquarters San Jose, California Type Privately Held Founded 2018”
- 2
Supports Organization · linkedin url
“https://linkedin.com/company/antora-energy”
- 3
Crunchbase · Supports Organization · legal name
“legal_name: Antora Energy, Inc.”
Systems2
- 4
Antora Energy · May 19, 2026 · Supports System, System · maturity
“our San Jose, CA gigafactory, where all of our batteries are made”
- 5CompanyAntora – Technology
Antora Energy · Supports System
“The carbon blocks store energy at temperatures up to 2,400°C in a compact and modular system.”
Funding3
- 6
Antora Energy · Jul 30, 2026 · Supports Funding round, Funding round · investors, Organization, Organization · ownership
“today announced its closing on $550 million in Series C funding. The oversubscribed round was co-led by G2 Venture Partners and Eclipse, with participation from new investors including Ribbit Capital, Salesforce Ventures, Activate Capital, John Doerr, Westly Group, StepStone Group, and Liberty Mutual Strategic Ventures. Existing investors also contributed to the round,”
- 7
Antora Energy · Feb 22, 2024 · Supports Funding round, Funding round · investors
“raised a $150 million Series B funding round led by Decarbonization Partners”
- 8
Antora Energy · Feb 16, 2022 · Supports Funding round · amount, Funding round · investors, Funding round · stage
“Antora Energy Raises More Than $50M to Decarbonize Heavy Industry”
Supply chain2
- 9
Antora Energy · Apr 2, 2026 · Supports Facility
“adding two new facilities near its existing San Jose, CA factory”
- 10CompanyAntora – Contact
Antora Energy · Supports Facility, Organization · x url
“Manufacturing 2350 Zanker Rd San Jose, CA 95131”
People1
- 11CompanyAntora – Company
Antora Energy · Supports Role
“Marigold Power became part of Antora Energy, which he co-founded in 2018 with Andrew Ponec and Dr. Justin Briggs.”
Other2
- 12
- 13
LinkedIn · Supports Organization · employee range, Organization metric · employees in linkedin, Organization metric · followers
“company_size: 201-500 employees”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.