Top 10 Solar Battery Manufacturers in US 2025
As you navigate the evolving landscape of renewable energy, you’ll discover that solar batteries are essential for storing the power generated by your solar panels, ensuring reliable energy even when the sun isn’t shining. In 2025, the US market for solar battery manufacturers is booming, driven by advancements in technology, increasing demand for home energy independence, and supportive policies. Whether you’re looking to reduce your electricity bills, prepare for power outages, or contribute to a greener planet, understanding the top players can help you make informed decisions. This detailed guide highlights the top 10 solar battery manufacturers in the US for 2025, focusing on their innovations, reliability, and contributions to the industry. You’ll find each company profiled with key details presented clearly for easy comparison, helping you choose the best fit for your needs.
Top 10 Solar Battery Manufacturers in US Ranks
Part 1. Iwis Solar Manufacturers in China
Part 2.Tesla
As you consider Tesla, you’ll appreciate its leadership in integrating solar batteries with electric vehicles and smart home systems for seamless energy management.
Establishment time: 2003 (Tesla Inc.), with energy division established in 2015.
Headquarters: Austin, Texas, USA.
Company overview: Tesla Energy is the clean energy division of Tesla, Inc., focusing on sustainable energy solutions including solar generation and storage to accelerate the world’s transition to renewable energy.
Main products: Powerwall home batteries, Megapack utility-scale batteries, solar inverters, and rooftop solar panels.
Advantage products: Scalable energy storage systems with high round-trip efficiency and built-in inverters for easy installation.
Characteristic products: Powerwall 3, offering 13.5 kWh capacity with advanced storm watch features for automatic backup during outages.
Market share: Approximately 40% of the US residential solar battery market in 2025.
Company type: Manufacturer.
Company dynamics: In Q1 2025, Tesla reported a 13% drop in vehicle deliveries but saw growth in energy storage deployments, with plans to expand Gigafactory production.
- Web： https://www.tesla.com/
Part 3.Enphase Energy
You’ll find Enphase Energy appealing if you value microinverter technology that maximizes solar output and pairs perfectly with battery storage for your home setup.
Establishment time: 2006.
Headquarters: Fremont, California, USA.
Company overview: Enphase Energy is an energy technology company specializing in microinverters and battery storage solutions for residential and commercial solar systems, emphasizing smart energy management.
Main products: IQ Microinverters, IQ Batteries, and Enphase App for monitoring.
Advantage products: Modular batteries with high efficiency and compatibility with various solar panels.
Characteristic products: IQ Battery 5P, a 5 kWh unit with passive cooling and a 15-year warranty.
Market share: Around 30% in the US microinverter market, with growing presence in batteries at about 15%.
Company type: Manufacturer.
Company dynamics: Enphase reported $363 million revenue in Q2 2025, with a 35% year-over-year increase in battery shipments and new product launches like the IQ Battery 10C.
- Web: https://enphase.com/
Part 4. FranklinWH
As you explore FranklinWH, you’ll be impressed by its focus on whole-home energy solutions that optimize power usage and provide robust backup.
Establishment time: 2019.
Headquarters: San Jose, California, USA.
Company overview: FranklinWH is a research-driven company developing residential energy management and storage systems for whole-home backup and optimization.
Main products: aPower batteries, aGate smart energy management systems, and integrated inverters.
Advantage products: High-capacity batteries with rapid charging and discharging capabilities.
Characteristic products: aPower 2, a 13.6 kWh battery with 98% round-trip efficiency and modular expansion.
Market share: Emerging with about 5% in the US home battery segment, gaining traction through partnerships.
Company type: Manufacturer.
Company dynamics: In 2025, FranklinWH secured $25 million in Series B funding to accelerate production and expanded to over 3,000 installation partners.
- Web: https://www.franklinwh.com/
Part 5. SunPower
You’ll appreciate SunPower if you’re seeking high-efficiency panels paired with batteries for maximum solar yield in limited space.
Establishment time: 1985.
Headquarters: Richmond, California, USA.
Company overview: SunPower Corporation provides photovoltaic solar energy generation systems and battery storage, known for high-efficiency modules and integrated solutions.
Main products: SunVault batteries, Equinox solar systems, and performance monitoring software.
Advantage products: Batteries with deep depth of discharge and long warranties for durability.
Characteristic products: SunVault Storage, offering 13-26 kWh capacity with seamless solar integration.
Market share: Approximately 10% in the US residential solar and battery market.
Company type: Manufacturer.
Company dynamics: SunPower reported $67.5 million revenue in Q2 2025, with operating profit and attendance at growth conferences to expand market reach.
- Web: https://us.sunpower.com/
Part 6. Generac
As you look at Generac, you’ll value its expertise in backup power, making it ideal if you prioritize reliability during frequent outages.
Establishment time: 1959.
Headquarters: Waukesha, Wisconsin, USA.
Company overview: Generac Holdings Inc. designs and manufactures power generation equipment, including energy storage solutions for residential and commercial use.
Main products: PWRcell batteries, generators, and clean energy systems.
Advantage products: Modular battery designs for customizable capacity.
Characteristic products: PWRcell M4, with up to 18 kWh per module and hybrid inverter integration.
Market share: About 75% in North American residential standby generators, with 10% in solar batteries.
Company type: Manufacturer.
Company dynamics: Generac reported $942 million in Q1 2025 sales, a 6% increase, with strong growth in residential products.
- Web:https://www.generac.com/
Part 7 . Sonnen
You’ll find Sonnen suitable if you want batteries that support virtual power plants for community energy sharing.
Establishment time: 2010.
Headquarters: Tucker, Georgia, USA (US operations; global HQ in Wildpoldsried, Germany).
Company overview: Sonnen, a Shell subsidiary, is a leader in smart energy storage and management, providing solutions for clean, affordable energy.
Main products: ecoLinx batteries, sonnenCore, and virtual power plant software.
Advantage products: Batteries with high cycle life and intelligent energy optimization.
Characteristic products: ecoLinx 12, offering 12 kWh with 100% depth of discharge and 15-year warranty.
Market share: Around 8% in the US premium home battery market.
Company type: Manufacturer.
Company dynamics: In 2025, Sonnen launched NEM-proof functions for California markets and expanded residential battery designs for Australia, influencing US strategies.
- Web:https://sonnenusa.com/en/
Part 8. Villara
As you consider Villara, you’ll like its emphasis on integrated HVAC and solar solutions for comprehensive home efficiency.
Establishment time: 1947.
Headquarters: McClellan Park, California, USA.
Company overview: Villara Building Systems is a provider of HVAC, plumbing, and solar energy solutions, including advanced battery storage for residential use.
Main products: VillaGrid batteries, solar panels, and energy management systems.
Advantage products: High-performance LTO chemistry batteries with extended warranties.
Characteristic products: VillaGrid, a 20-year warranty battery with lithium titanium-oxide technology.
Market share: Growing presence with about 3% in California’s home battery installations.
Company type: Manufacturer and installer.
Company dynamics: In 2025, Villara partnered on product-market fit studies for VillaGrid and expanded services in Northern California.
- Web：https://villara.com/
Part 9. PointGuard Energy
You’ll be drawn to PointGuard Energy if you seek innovative, all-in-one systems for fast deployment in your renewable setup.
Establishment time: 2023 (as a sub-brand of Sigenergy).
Headquarters: Austin, Texas, USA.
Company overview: PointGuard Energy, a sub-brand of Sigenergy, focuses on innovative home energy storage solutions for North America.
Main products: PointGuard Home batteries, solar inverters, and EV chargers.
Advantage products: 5-in-1 integrated energy storage systems for simplicity.
Characteristic products: PointGuard Home, a hybrid system with rapid installation and high efficiency.
Market share: Emerging with about 2% in the US residential market.
Company type: Manufacturer.
Company dynamics: PointGuard launched new solutions at RE+ 2024, extending into 2025 with tailored products for US grids.
- Web：https://www.pointguardenergy.com/
Part 10. Kore Power
As you evaluate Kore Power, you’ll value its vertical integration for cost-effective, high-performance batteries.
Establishment time: 2018.
Headquarters: Coeur d’Alene, Idaho, USA.
Company overview: Kore Power develops and manufactures lithium-ion battery cells and energy storage systems for utilities, e-mobility, and industrial applications.
Main products: Mark 1 and Mark 2 battery modules, integrated storage systems.
Advantage products: High-density cells with enhanced safety features.
Characteristic products: KORE Powerwall, scalable residential batteries.
Market share: About 4% in US utility-scale storage, expanding to residential.
Company type: Manufacturer.
Company dynamics: In 2025, Kore joined the Russell Microcap Index and ramped up production at its Arizona facility.
- Web: https://korepower.com/
Part 11. Bluetti
You’ll enjoy Bluetti if you’re after portable and expandable options for off-grid or emergency power needs.
Establishment time: 2013.
Headquarters: Las Vegas, Nevada, USA.
Company overview: Bluetti provides portable power stations, residential energy storage, and solar solutions for clean, reliable energy.
Main products: AC series power stations, EP series batteries, and solar panels.
Advantage products: Expandable systems with fast charging.
Characteristic products: EP900 Home Battery, with modular design up to 39.6 kWh.
Market share: Around 5% in the US portable solar battery market.
Company type: Manufacturer.
Company dynamics: Bluetti unveiled Apex 300 and EnergyPro 6K at CES 2025, following a $5.4M crowdfunding success.
- Web:https://www.bluettipower.com/
Now that you’ve explored the top 10 solar battery manufacturers in the US for 2025, you’re equipped with the insights to choose a provider that aligns with your energy needs and sustainability goals. From Tesla’s cutting-edge integration to Bluetti’s portable solutions, each company offers unique strengths, whether you prioritize scalability, efficiency, or innovative features like virtual power plant support. As you make your decision, consider factors like capacity, warranty, and compatibility with your solar setup to ensure long-term reliability and value. By investing in a solar battery from one of these leading manufacturers, you’re not only securing energy independence but also contributing to a cleaner, greener future. Take the next step toward powering your home sustainably and confidently in 2025.
