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Get Early Access to the New Fortress Power Home & PRO Apps – Apply to be a Beta Tester Today!

Smart Energy Storage Solutions for Homes & Businesses
Whether you’re looking for backup power, off-grid living, or lower electricity bills, Fortress Power systems are designed to keep your home or business running — no matter what.
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Become a Fortress Power Certified Installer
Join our nationwide network of professionals and gain the tools, training, and support you need to grow your business with Fortress Power.
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Turn your solar and energy storage into a source of extra income.
Currently available in 15 states plus Puerto Rico, EnergyBroker allows system owners to earn money back through upfront and ongoing incentives from local utility providers.
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Powering Businesses, Facilities & Critical Infrastructure
Fortress Power’s commercial and industrial energy storage systems are engineered to deliver scalable, high-capacity solutions for businesses, schools, healthcare centers, and government facilities, no matter the need.
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Our Vision

To empower individuals, families, and businesses with clean, reliable energy storage solutions that create a more resilient and sustainable world.

Our Mission

To deliver safe, high-performance solar battery systems that reduce energy costs, protect against power outages, and accelerate the transition to renewable energy—backed by industry-leading support and long-term reliability.

About Us

Reliable Solar Energy Storage for a Stronger Future.

From everyday home energy savings to large-scale commercial and industrial resilience, Fortress Power provides the advanced energy storage systems needed to build smarter, more reliable power infrastructure. Our solutions deliver clean energy, dependable backup, and long-term performance—empowering customers of every size to take control of their energy future.

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500+

Installer Partners

100+

Distributor Partners

50,000+

Projects Worldwide

Why Choose a Solar Energy Storage System?

Lower Energy Costs With Solar + Storage

A modern energy storage system lets you store excess solar energy during the day and use it when utility rates are highest, dramatically reducing monthly electricity bills and boosting the value of your solar investment.

Sustainable, Clean Energy for Your Home or Business

Storing and using your own solar power reduces your reliance on fossil fuels, cuts carbon emissions, and accelerates your path toward a clean, renewable energy lifestyle.

Reliable Backup Power for Outages

A home battery backup system keeps your lights on, appliances running, and critical circuits powered during blackouts—providing seamless protection from storms, grid failures, and increasingly unstable utility infrastructure.

Energy Independence On or Off the Grid

Whether you’re looking for true off-grid capability or simply greater day-to-day control over your home’s power, an energy storage system gives you long-term energy resilience, freedom, and peace of mind.

Resources for Every Step of Your Energy Journey

Whether you’re installing a new Fortress Power system or exploring clean energy solutions for your home, our resource center gives you quick access to the tools, guides, and support you need.

Installers

Stay up to date with live and on-demand technical training sessions designed to help installers master Fortress Power systems.

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Access detailed installation guides, data sheets, wiring diagrams, and technical documents for every Fortress Power product.

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Need assistance? Submit a support ticket and our engineering team will help you diagnose, troubleshoot, or configure your system.

Submit a Support Ticket

Read expert articles on system design, product updates, best practices, and industry trends to stay ahead in the solar + storage market.

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System Owners

Explore preconfigured solutions that show exactly what different battery and inverter packages can power in your home.

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Learn about our industry-leading warranty and extended coverage options—designed to protect your investment for decades.

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Use our interactive tool to estimate your energy needs, size your system, and discover the right Fortress Power solution for your home.

Design Your System

Locate authorized Fortress Power installers and dealer partners near you for professional system design, purchase guidance, and expert installation.

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Newest Residential Products

eBoost Scalable Energy Storage System

The eBoost is a 16kWh stackable LFP battery designed for seamless integration with the Fortress Power Envy Duo 21 inverter — delivering reliable, scalable backup and off-grid energy.

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eForce Stackable Whole-Home Energy Storage System

Pairing powerful 9.6 kWh LFP batteries with the Envy Inverter, eForce delivers a flexible, stackable solution for backup power, off-grid living, and energy independence.

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Solo 6.5K Non-Export Inverter

The Fortress Power Solo 6.5K is a powerful and flexible 6.5kW split/single-phase hybrid inverter designed for off-grid living, backup power, and grid-tied solar systems.

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Coming March 2026!

Two Apps. One Powerful Energy Ecosystem.

The Fortress Power Owner and PRO apps give homeowners and installers the right tools to monitor, manage, and support Fortress Power systems, anytime, anywhere.

Learn More About the Owner App (Coming Soon)
Learn More About the PRO App (Coming Soon)

Don’t just take our word for it

Our reputation speaks for itself. Hear from our certified Fortress Power installers, industry distribution partners and satisfied homeowners and businesses.

I have been loving the Envy and eVault MAX/eFlex combo. Gary of Fortress Power tech support, absolutely has been the best. He is knowledgeable, patient, and just amazing in helping me commission systems and answering any answer that may come up. Wish I had him on speed dial 24/7. Great overall product and team, thanks!

Steven N, Installer

When Sol-Ark would not support closed loop with my E-flex batteries, the Fortress engineers stepped up to give me tools to update my batteries’ software and helped with connecting the closed loop communications. Thanks to all of my friends at Fortress.

Mark

Quality home and commercial American battery manufacturer. They attract talent within their company and are led by a strong management team.

Andrew Breiter-Wu

Contact Us

Have a question about our systems and products? Select the correct contact form and connect with a Fortress Power representative!

📧 [email protected]

📞 877-497-6937

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