Clean Tech Startup Antora Energy Raises $550M in Series C Funding

Antora Energy, a San Jose, CA-based provider of energy storage solutions for industry, data centers, and the grid, has raised $550M in Series C funding round co-led by G2 Venture Partners and Eclipse.

The round also saw participation from Ribbit Capital, Salesforce Ventures, Activate Capital, John Doerr, Westly Group, StepStone Group, Liberty Mutual Strategic Ventures, Decarbonization Partners, Impact Science Ventures, Trust Ventures, Breakthrough Energy Ventures, and Lowercarbon Capital.

The fresh capital will be used to accelerate large-scale project deployments across the U.S., expand manufacturing capacity, establish a second domestic production facility and strengthen the company’s U.S.-based supply chain.

Funding Snapshot

About Antora Energy

Founded in 2018 by Andrew Ponec, Justin Briggs, and David Bierman, Antora Energy develops thermal battery technology that stores low-cost electricity as heat in insulated blocks of solid carbon and delivers energy as heat or electricity whenever needed. Its factory-built systems are designed for industrial facilities, data centers and electric grids, providing long-duration energy storage without relying on critical minerals.

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Unlike conventional lithium-ion batteries, Antora’s thermal batteries can store energy for multiple days using safe and abundant materials. The company's technology enables customers to utilize excess renewable electricity and deliver reliable, around the clock energy while reducing costs and emissions.

Core offerings include:

• Thermal battery energy storage systems
• Industrial heat and power solutions
• Long-duration energy storage
• Grid and data center energy solutions

Core Technologies / Products / Services