Antora Secures $550M for Thermal Battery Tech Expansion
California's Antora Energy secured $550 million to expand thermal battery production that stores renewable energy for heavy industry and data centers, following its rapid deployment of a 5-gigawatt-hour system in South Dakota.
Antora Energy announced the Series C funding round on July 31, 2026, according to ESG Today, with proceeds earmarked for scaling up manufacturing capacity and accelerating deployment of its thermal battery systems across the United States.
Founded in 2017, Antora has developed thermal batteries that convert intermittent renewable electricity into reliable industrial-grade energy. The technology works by using renewable power to heat solid carbon blocks to extreme temperatures within insulated modules, storing thermal energy that can later be released as industrial heat or converted back to electricity through the company’s thermophotovoltaic technology.
Rapid Deployment Success
The financing comes on the heels of Antora’s deployment of a 5 gigawatt-hour storage system in South Dakota, one of the world’s largest battery storage installations. The project advanced from initial construction to active energy delivery in under 12 months, demonstrating the technology’s commercial viability and speed-to-market advantages.
Andrew Ponec, Co-Founder and CEO of Antora, framed the development in terms of removing constraints on American industrial expansion. From factories to data centers, energy is the bottleneck to industrial growth, he stated, adding that the company has demonstrated its ability to break that bottleneck through American innovation.
Ponec emphasized the funding will strengthen investment in U.S. manufacturing and domestic supply chains while delivering affordable energy both nationally and internationally.
Industrial and Tech Sector Demand
The company reports a growing pipeline of signed agreements with hyperscale technology companies and industrial leaders, positioning thermal storage as a solution to energy constraints facing data centers and manufacturing facilities requiring constant, high-temperature power.
The new capital will fund large-scale project deployment across the country, expand production capacity, and establish a second U.S. manufacturing hub, according to the company’s announcement.
Investor Backing
The funding round was co-led by G2 Venture Partners and Eclipse, with participation from an array of new investors including Ribbit Capital, Salesforce Ventures, Activate Capital, John Doerr, Westly Group, StepStone Group, and Liberty Mutual Strategic Ventures. Existing backers Decarbonization Partners, Impact Science Ventures, Trust Ventures, Breakthrough Energy Ventures, and Lowercarbon Capital also participated.
Jake Tauscher, Partner at G2 Venture Partners, characterized the energy system as being at an inflection point with few companies capable of meeting soaring power demand. He noted Antora is deploying at scale, on budget, and within the rapid timelines customers require.
The thermal battery sector represents a departure from conventional lithium-ion battery storage, offering longer-duration energy storage and the ability to deliver the high temperatures required for industrial processes—capabilities increasingly sought after as domestic manufacturing expands and data center construction accelerates nationwide.
With information from ESG Today
