Founded in 2021 and now based in Alameda, California, Anthro Energy is advancing lithium-ion battery performance and safety through its proprietary Anthro Proteus™ electrolyte technology. This unique injectable phase-change electrolyte transitions from liquid to a solid, non-flammable polymer within the battery cell. This process improves stability, significantly reduces risks like thermal runaway and fire hazards, and allows for higher energy densities—up to 35% more—by supporting advanced chemistries like silicon anodes, all while integrating into existing manufacturing lines. Targeting diverse sectors from consumer electronics and EVs to defense, Anthro is also strengthening the domestic supply chain by constructing a large-scale electrolyte production facility in Kentucky.
Battery Technology
The cornerstone of Anthro Energy’s innovation is its Anthro Proteus™ electrolyte platform. Unlike traditional liquid electrolytes, the Proteus system starts as a liquid precursor that solidifies into a conductive polymer during battery assembly. This solid state prevents leakage and enhances structural integrity, reducing the risk of short circuits, swelling, and physical damage. The resulting matrix suppresses flammable properties and increases mechanical toughness by 10 times, creating safer battery configurations.
Proteus’s tunable chemistry further enables compatibility with a variety of cell sizes, shapes, and chemistries. This flexibility allows manufacturers to design batteries optimized for specific applications—for instance, silicon anodes, which improve energy density but require stable electrolyte systems to counteract volume expansion during use. Proteus supports such advanced materials while maintaining compatibility with standard manufacturing lines, eliminating the need for costly equipment overhauls.
The company’s products include structural battery cells that can be shaped into unconventional geometries, such as drone wings or vehicle chassis components, and electrolyte solutions tailored for lithium-ion, solid-state, or semi-solid systems. These technologies are applied across industries: consumer electronics see lighter, longer-lasting devices, while automotive partners benefit from higher energy densities in electric vehicles. Defense applications leverage the electrolyte’s ruggedness for mission-critical systems, and micromobility solutions gain extended range and durability.
Recent Projects
In January 2025, Anthro Energy officially launched the Anthro Proteus™ technology, marking a milestone in its commercialization efforts. Building on this, the company secured additional federal tax credits under the Inflation Reduction Act in February 2025, further funding its Kentucky production facility. Plans for a pilot facility in California’s Alameda County were also announced, aiming to refine mass production techniques by mid-2025.
Previous highlights include a Series A funding round in February 2024, raising nearly $27.2 million from investors including Union Square Ventures and Energy Revolution Ventures. In 2023, Anthro secured $25 million from the U.S. Department of Energy to advance its manufacturing project, complementing $18.4 million in federal tax incentives. The company also reported successful UN 38.3 certification for its batteries and confirmed initial deployments in extreme environments, validating Proteus’s reliability under demanding conditions.
Investors
Anthro Energy has attracted prominent financial backers and strategic partners since its inception. Key investors include venture capital firms such as Collab Fund, Union Square Ventures, and Emerson Collective, alongside institutions like the National Security Innovation Capital and Energy Revolution Ventures. Government backing through agencies like the DOE and the Department of Defense underscores the technology’s strategic importance for U.S. energy security and defense infrastructure.
The company’s total equity financing to date exceeds $27 million, supplemented by federal grants and tax credits. Partnerships with entities like IQT and the Department of Energy further highlight Anthro Energy’s role in advancing domestic battery innovation.
Business Details
Location: Alameda, California, USA
Website: https://www.anthroenergy.com/
LinkedIn: https://www.linkedin.com/company/69301394
