# Antora Energy

> Antora Energy makes modular thermal batteries that charge with low-cost electricity, hold energy as heat in solid carbon blocks, and supply round-the-clock heat or power to large industrial customers. Its first giga-scale deployment at POET’s South Dakota bioprocessing plant pairs a 5 GWh system with a long-term heat agreement and a utility rate designed for flexible charging.

- **Founded:** 2018
- **Headquarters:** San Jose, United States
- **Founders:** Andrew Ponec (Co-founder and CEO), David Bierman (Co-founder and Chief Commercial Officer), Justin Briggs (Co-founder and Chief Operating Officer)
- **Products:** Thermal battery modules, HeatCore, Power block, Thermophotovoltaic technology, Project development and operation
- **Notable:** Commissioned a 5 GWh thermal storage project at POET’s Big Stone City plant in May 2026; over 200 modules moved from an empty lot to energy delivery in under 12 months., Expanded its San Jose manufacturing campus to three buildings in April 2026., Established a dedicated 2 MW-per-year TPV cell manufacturing line and reported greater than 40% TPV conversion efficiency in 2023.

## Products & services

- **Thermal battery modules** — Factory-built modules use electric resistance heating to charge solid carbon blocks and deliver stored energy as industrial heat.
- **HeatCore** — Current heat product for 100-375°C plant loads; each listed module supplies 300 kW thermal output and can charge at up to 900 kW electric.
- **Power block** — A modular thermal storage system with steam generation and an off-the-shelf steam turbine; Antora lists a 50 MW nameplate power configuration.
- **Thermophotovoltaic technology** — Antora manufactures TPV cells and reports more than 40% cell conversion efficiency. Direct TPV integration into thermal battery power products is described as future work.
- **Project development and operation** — Site screening, power procurement, project financing, construction, controls, dispatch optimization and round-the-clock operations.

## Achievements

- Commissioned a 5 GWh thermal storage project at POET’s Big Stone City plant in May 2026; over 200 modules moved from an empty lot to energy delivery in under 12 months.
- Expanded its San Jose manufacturing campus to three buildings in April 2026.
- Established a dedicated 2 MW-per-year TPV cell manufacturing line and reported greater than 40% TPV conversion efficiency in 2023.
- Commissioned a commercial-scale thermal battery at Wellhead Electric near Fresno in 2023.
- Fast Company ranked Antora sixth in its 2025 Energy category of Most Innovative Companies.

## Latest updates

- **2026-09** — Announced a carbon-material development and supply partnership with GrafTech in Pennsylvania.
- **2026-07** — Closed a $550 million Series C led by G2 Venture Partners and Eclipse.
- **2026-05** — Commissioned the 5 GWh Project Big Stone system for POET; full operation was planned for later in 2026.
- **2026-04** — Opened two additional facilities at its San Jose manufacturing campus.

## Links

- Website: https://www.antora.com/
- LinkedIn: https://www.linkedin.com/company/antora-energy/
- Twitter/X: https://x.com/antoraenergy
- YouTube: https://www.youtube.com/channel/UCTFDArCxij5uoJi8kZ2cgxQ

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Profile page: https://yespress.io/antora-energy
Published by YesPress — https://yespress.io
Last updated: 2026-09-28