Skip to content
Energy Tech Series A Founded 2020

Anthro Energy

Anthro Energy is a battery technology company developing advanced electrolyte solutions and flexible battery cells that improve lithium-ion battery safety, energy density, and design flexibility. The company’s flagship Anthro Proteus platform is an electrolyte technology providing an unprecedented combination of performance, safety, and mechanical integrity. Proteus delivers 10x improved toughness with resistance to…

📍 Palo Alto, United States · Energy Storage Tech

Funding snapshot

Last roundSeries A
Amount$6M
Date24 November 2025
Total raised$27M
Team size67

About

Anthro Energy is a battery technology company developing advanced electrolyte solutions and flexible battery cells that improve lithium-ion battery safety, energy density, and design flexibility. The company’s flagship Anthro Proteus platform is an electrolyte technology providing an unprecedented combination of performance, safety, and mechanical integrity. Proteus delivers 10x improved toughness with resistance to swell, short circuit, impact, and fire; up to 35% improved energy density by unlocking next-gen chemistries like silicon anodes; highly tunable compatibility with all cell shapes, sizes, and chemistries; and 100% drop-in compatibility with existing manufacturing infrastructure including today’s gigafactories. Anthro offers both battery cells and electrolyte solutions, serving consumer electronics (smaller, lighter, longer-lasting devices), micromobility (durable, long-range batteries), defense (rugged, safe, lightweight US-manufactured batteries), and automotive (giga-scale manufacturing for EVs). The company was awarded $18.4 million in federal tax credits to build the first U.S.-owned advanced electrolyte facility in Alameda, California. Founded in 2020 and headquartered in Palo Alto, California, Anthro has raised approximately $27.2 million in Series A funding. Investors include Collab Fund, Union Square Ventures, Emerson Collective, Voyager, In-Q-Tel, Energy Revolution Ventures, and Ultratech Capital Partners.

Business model

Energy Storage Tech > Battery > Secondary Battery > Lithium Ion

Team background

College Wise > Stanford University

Institutional investors

Collab Fund Union Square Ventures Emerson Collective Voyager ERV Ultratech Capital Partners Overlap Holdings Nor’easter Ventures Energy Revolution Ventures OSTI CALSTART In-Q-Tel Dorm Room Fund Black Mountain Ventures Cardinal Ventures

Backed by funds in our directory

Latest coverage

No articles yet.

Raising like Anthro Energy?

Analyze your pitch deck before your next raise.

Analyze My Deck →