Top 10 Energy Storage Battery Manufacturers in USA

This article highlights the Top 10 energy storage battery manufacturers based in the USA, featuring a mix of long-established pioneers and innovative technology disruptors.  Whether you're a solar installer, EPC contractor, distributor, or energy project developer, this list offers reliable manufacturers of lithium-ion, sodium-ion, metal-hydrogen, and flow battery solutions.

Among these, GSL ENERGY, a global OEM/ODM provider of advanced LiFePO₄storage systems, is featured for its outstanding inverter compatibility, international certifications, and growing footprint in the U.S. market.

1. Tesla

Company Description: Tesla Energy (subsidiary of Tesla, Inc.), headquartered in Palo Alto, California, develops integrated solar and battery storage solutions, including Powerwall, Powerpack, and Megapack.    Known for pioneering large-scale deployments and seamless utility integration

Product Types: Residential Powerwall;    commercial/utility-scale Powerpack and Megapack.

2. GSL ENERGY

Company Description: GSL ENERGY USA INC., founded in 2011 and headquartered in Shenzhen, is a global LiFePO₄ battery specialist serving residential, industrial, and commercial markets.  With a 5.8 GWh annual capacity, global certifications (UL9540, UL1973, CE), and direct manufacturing and R&D capabilities, GSL ENERGY offers custom energy storage and solar-integration solutions

Product Types: LiFePO₄ home tower batteries;    stackable telecom batteries;    industrial BESS (30 kWh–5 MWh);  hybrid inverters;  solar kits.

3. Enphase Energy

Company Description: Enphase Energy, Inc., founded in 2006 and based in Fremont, California, is a leader in solar microinverters and battery systems for residential use.   Over 48 million microinverters and Encharge systems have been deployed globally, offering real‑time energy management through its proprietary software platform

Product Types: Encharge home battery systems;    solar‑microinverters;  EV chargers.

Contact Info: Fremont, CA; contact via the enphase.com customer support portal.

4. ESS Inc.

Company Description: ESS Inc., founded in 2011 in Wilsonville, Oregon, develops iron‑flow battery systems for long‑duration storage (dozens of hours).    Their technology focuses on low cost, high cycle life, safety, and utility‑scale applications

Product Types: Iron‑flow battery systems for grid‑scale storage.

5. Primus Power

Company Description: Primus Power, founded in 2009 in Hayward, California, produces zinc‑based flow batteries tailored for utility and industrial energy storage, offering long‑duration, cost‑effective solutions for large‑scale deployments

Product Types: Zinc‑flow battery systems for commercial and utility storage.

Contact Info: Hayward, CA;   contact via Primus Power website.

6. Powin Energy Corporation

Company Description: Powin (est. 1985, Oregon) delivers utility‑scale modular battery storage systems.    Their Stack™ systems (with StackOS platform) support advanced thermal, energy, and cybersecurity management.   Featured projects include powering major events and grid‑scale installations globally.

Product Types: Stack™ modular BESS;   utility-scale lithium-ion systems with software controls.

7. Microvast

Company Description: Microvast Holdings, based in Stafford, Texas, focuses on battery systems for commercial vehicles and utility energy storage.    Founded in 2006, they operate facilities in the U.S., China, and Europe, and are known for fast‑charging lithium-ion battery packs for industrial and ESS applications.

Product Types: Lithium-ion battery modules for EVs and energy storage systems.

8. Natron Energy

Company Description: Natron Energy, founded in 2012 and headquartered in Santa Clara, California, was the first U.S. company to commercialize sodium-ion batteries.   Their BluePack Critical Power Battery charges rapidly and offers over 50,000 cycles—ideal for data centers and industrial backup applications.

Product Types: Sodium‑ion battery packs for critical power, data centers, telecom.

9. EnerSys

Company Description: EnerSys, founded in 1999 and based in Reading, Pennsylvania, supplies reserve‑power and motive‑power batteries.       Their portfolio includes lead‑acid and lithium systems under brands like PowerSafe, Hawker, and Odyssey.     They serve telecom, utility, aerospace, defence, and energy storage markets globally.

Product Types: Industrial reserve‑power batteries, motive power batteries, battery accessories, chargers.

10. Form Energy

Company Description: Form Energy, founded in 2017 and headquartered in Somerville, Massachusetts, develops iron‑air batteries for ultra‑long‑duration (up to 100 hours) grid storage.   Backed by investors such as Bill Gates and Jeff Bezos, they aim to deliver highly scalable, low‑cost storage for utility applications.

Product Types: Iron‑air battery systems designed for day-to-week scale grid storage

As the USA continues to scale its renewable energy infrastructure, battery storage will play a defining role in ensuring energy availability, sustainability, and independence. Whether you're developing a residential solar project, microgrid, or utility-scale BESS, the companies listed here offer a reliable starting point.

If you're looking for a flexible and globally trusted battery partner, GSL ENERGY stands out with its factory-direct LiFePO₄ systems, OEM/ODM support, and proven success in over 138 countries.