Antora Energy
Antora Energy is a Thermal Storage company founded in 2017 and based in Sunnyvale, USA. It has raised $821.7M in total funding, most recently a Growth in 2026.
Founded in 2017 and headquartered in Sunnyvale, Antora Energy builds containerized thermal energy storage systems for industrial decarbonization. The company's Thermal Battery System stores 15 MWh per shipping-container unit with 5× the energy density of lithium-ion systems, heating carbon blocks using surplus renewable electricity and converting stored thermal energy into both process heat and electricity via thermophotovoltaic cells with no moving parts. The system targets cement, steel, chemicals, and other heavy-industrial applications. Antora has raised $821.7 million in total capital, including a $550 million Growth-stage round announced in August 2026 to expand U.S. manufacturing capacity.
Thermal energy storage is critical infrastructure for industrial decarbonization, a sector where electrification alone cannot fully address emissions from high-temperature process heat. Antora's system addresses a structural gap in renewable deployment by storing and dispatching heat at scales and temperatures required by cement, steel, and chemical production—industries representing roughly 30% of global industrial emissions. The $821.7 million in capital deployed signals confidence from venture and growth investors that solid-state thermal storage can economically compete with fossil fuels in hard-to-abate sectors.
antoraenergy.com ↗·Thermal Storage·USA·private 
