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NEW! 30 Year Extended Warranty for Residential Customers! Click for Details!

August 2025

Fortress Power to Unveil Three New Energy Storage Solutions at RE+ Vegas 2025

Blog, Solar Batteries

This fall, Fortress Power is expanding our 48V lineup with three powerful new products designed to deliver smarter, more reliable energy storage solutions for homes and businesses. We’re thrilled to announce the eBoost Scalable Energy Storage System, the Envy Duo 21 Inverter, and the Solo 6.5K Inverter—each engineered to maximize performance, flexibility, and efficiency.

You can be among the first to see them at RE+ 2025 in Las Vegas, September 8–11 at the Venetian Expo & Caesars Forum. Visit us at Booth V6436 to explore the future of residential and commercial energy storage.

eBoost Scalable Energy Storage System
Boost Performance. Boost Reliability. 

 

The Fortress Power eBoost is a 16kWh stackable LFP battery engineered for seamless integration with the Envy Duo 21 inverter. Built for reliability and scalability, it’s the ultimate solution for whole-home backup and off-grid applications. Product highlights include:

  • 16kWh capacity per module – ideal for higher load demands
  • Scalable to 256kWh – connect up to 16 units in parallel
  • Integrated eWay Wireway system – clean, code-compliant installs
  • All-weather durability – IP65-rated with internal heating elements
  • Whole-home compatibility – pairs with the Envy Duo 21 inverter
  • Quick scale and deploy – modular design reduces install time

Whether you’re designing for residential, light commercial, or small retail use, the eBoost delivers dependable, long-lasting energy storage with quick scalability and easy deployment.

Envy Duo 21 Inverter
Maximum Power. Dual-Purpose Design.

 


The Envy Duo 21 is a 48V hybrid inverter that takes system flexibility to new levels. With 25kW PV input, dual-phase support (240V split-phase / 208V three-phase), and parallel scalability up to 120kW, it’s the perfect solution for high-performance residential and light commercial installations. Key features include:

  • Up to 25kW PV input capacity
  • 12kW continuous / 16kW peak output
  • Parallel up to 10 units for 120kW total power
  • Built-in AC/DC breakers and rapid shutdown transmitter
  • Remote monitoring and firmware updates via Fortress Power mobile app
  • Minimum of two or more inverters required for 208V three-phase operation.

When paired with Fortress Power batteries like the eBoost, the Envy Duo 21 ensures seamless whole-home energy management.

Solo 6.5K Inverter
Reliable, Flexible Power for Non-Export Applications

 

Designed for backup power, off-grid living, and grid-tied solar systems, the Solo 6.5K is a compact yet powerful hybrid inverter with 6.5kW output and a built-in 140A solar charge controller. With parallel support for up to six units, it can scale to 39kW total output, making it ideal for everything from cabins to microgrids.

  • 140A solar charge controller – efficient, high-capacity charging
  • Grid and generator input with intelligent switching
  • Time-of-use scheduling for lower utility bills
  • Optional CT monitoring for added safety and precision
  • Parallel up to 6 units for 39kW total output
  • Versatile application support for backup, off-grid, and smart load control

Whether you’re powering a remote property or boosting resilience in a grid-tied home, the Solo 6.5K provides dependable, flexible energy when and where you need it.

See the Future of Energy Storage at Re+ Vegas 2025
Be among the first to explore these three game-changing solutions at RE+ 2025, the largest clean energy event in North America. 

 

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Level Two, Booth V6436 – Venetian Expo & Caesars, Las Vegas
September 8–11, 2025

 

Exclusive RE+ Preview Webinar
Can’t make it to Las Vegas, or want insider access before the show? Join Fortress Power CEO Jing Yu on September 3rd at 3 PM EDT for a live RE+ Preview webinar. Register today to get an inside look at:

  • Our in-booth live training schedule
  • New product launches debuting in Vegas
  • The team members you’ll meet at the show

Looking to connect with us at the show? Visit our Contact Us page to schedule time with one of our sales representatives and learn how Fortress Power can power your next project.

Which Fortress Power System Is Right for Your Home? A Guide to Residential Energy Storage Packages

Blog, Solar Batteries

When it comes to backup power, there’s no one-size-fits-all solution. Every home has unique energy needs—from powering a few essential appliances during an outage to running your entire household off-grid. That’s why Fortress Power offers scalable energy storage systems designed to fit your lifestyle, budget, and backup goals.

Whether you’re an installer looking for the right system for your client or a homeowner researching energy storage options, this guide will walk you through three turnkey residential packages offered by Fortress Power. These sample setups are a starting point—your exact solution can be customized by a certified installer based on your home’s electrical loads, solar system size, and desired level of backup.

Eco Package

Best for: Basic backup needs — essential appliances and short outages

If your goal is to keep the essentials running (ex: lights, Wi-Fi, your fridge, and small electronics) during brief outages, the Eco Package is a great entry point into home energy storage. It’s compact, efficient, and built to perform in any weather.

 

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Appliances Covered:

  • Lights
  • Refrigerator
  • Wi-Fi Router
  • Phone and Laptop Charging
  • Microwave
  • Well Pump

Configuration Options:

  • Option A (Indoor/Outdoor):
    • Envy 8kW Inverter
    • 2 eFlex MAX 5.4kWh Batteries (10.8kWh Total)

  • Option B (Outdoor/Cold Climates):
    • Envy 8kW Inverter
    • eForce 9.6kWh Battery with Built-In Heater

Eco Package Features:

  • DC-coupled system for maximum efficiency
  • Generator-ready for extended outages
  • Virtual Power Plant (VPP) ready via Guardian Gateway
  • 30-year extended warranty available
  • Modular and expandable
  • All-weather rated

Comfort Package

Best for: Mid-level backup — major appliances, convenience, and longer outages

Looking to support more than the basics? The Comfort Package is designed for households that want peace of mind during longer outages or frequent grid instability. This setup powers more demanding appliances without compromising comfort.

Appliances Covered:

  • Window A/C
  • Kitchen Stove
  • Washing Machine
  • Hair Dryer
  • Dishwasher
  • Vacuum
  • Level 1 EV Charger
  • Power Tools

Configuration Options:

  • Option A (Indoor/Outdoor):
    • Envy True 12kW Inverter
    • eVault MAX 18.5kWh Battery
  • Option B (Outdoor/Cold Climates):
    • Envy True 12kW Inverter
    • eForce 19.2kWh Battery with Built-In Heater

Comfort Package Features:

  • 200A passthrough for whole-home coverage
  • High-efficiency DC-coupled system
  • Generator integration
  • Virtual Power Plant (VPP) ready via Guardian Gateway
  • Optional 30-year warranty
  • All-weather capability
  • Scalable to match growing power needs

24/7 Whole-Home Package

Best for: Full-home backup — heavy appliances and off-grid living

For those seeking complete energy independence or powering large homes, the 24/7 Whole-Home Package delivers seamless, uninterrupted energy. With double the inverters and battery capacity, this setup supports everything from HVAC systems to EV charging—even in extreme weather.

 

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Appliances Covered:

  • Central Air Conditioning
  • Heat Pump
  • Dryer
  • Hot Water Heater
  • Oven
  • Power Tools
  • Level 2 EV Charger

Configuration Options:

  • Option A (Indoor/Outdoor):
    • 2 Envy True 12kW Inverters
    • 2 eVault MAX 18.5kWh Batteries

  • Option B (Outdoor/Cold Climates):
    • 2 Envy True 12kW Inverters
    • 2 eForce 19.2kWh Batteries with Built-In Heaters

Comfort Package Features:

  • Full-home coverage with 200A pass-through
  • Highest-efficiency DC-coupled design
  • Generator support built-in
  • Guardian Gateway for VPP access
  • Extended 30-year warranty option
  • Cold climate–ready and weatherproof
  • Expandable for future energy needs
Why Installers Recommend Fortress Power

Scalable and band Flexible: Systems grow with your client's energy needs

Cold Climate Performance: Heated battery options for year-round use

Reliable Support: Trusted by certified installers nationwide

Future-Ready: Virtual Power Plant (VPP) capability with Guardian Gateway

Long-Term Value: Up to 30 years of extended warranty coverage

Start building your energy plan today

Ready to design your system or help your clients choose the right package? Fortress Power makes it easy to get started. Use our System Design Tool to explore configurations tailored to your exact energy goals—or let us connect you with one of our certified installers to create a custom solution. Get started today.

Is Solar Storage Worth the Investment for Homeowners?

Blog, Solar Batteries

If you’re a homeowner considering solar energy, there’s never been a better time to act. Thanks to the 30% federal tax credit for solar and battery storage, investing in energy independence is more affordable than ever. But this opportunity won’t last forever—the credit is set to decrease at the end of the year, making now the time to lock in maximum savings while protecting your home from outages and rising utility costs.

Why More Homeowners Are Turning to Solar + Storage

Traditional grid-tied solar systems are a great start, but they fall short when the power goes out. Solar battery storage bridges that gap, allowing you to store excess energy generated during the day and use it when the sun isn’t shining—or when the grid fails. Here’s why more homeowners in 2025 are choosing to invest in solar energy storage.

The 30% Federal Tax Act Won’t Last Forever

Although the Inflation Reduction Act initially extended the 30% federal tax credit through 2032, a new law passed on July 4, 2025, has fast-tracked the deadline: homeowners now have until December 31, 2025 to qualify. Starting in 2026, residential solar and battery installations will no longer be eligible for this incentive.

If you’ve been thinking about solar or adding battery storage, this change means the clock is ticking. To take full advantage of the savings, your system must be installed before the year ends. Already have panels? You can still add battery backup and receive the full credit—just don’t wait too long, as installer schedules are booking up quickly.

Energy Security in an Unpredictable World

Storms, heatwaves, and grid outages are becoming more common. With a home battery system, you can stay powered through blackouts and reduce dependence on an aging and increasingly unreliable electric grid. Solar + storage gives you the peace of mind that your home and everything in it will stay up and running when you need it most.

Keep Your Electric Bills Low

Solar panels reduce your energy bills, but a battery system maximizes your savings by allowing you to store solar energy for later use. Instead of sending unused solar power back to the grid, you can draw from your own supply when rates peak or the sun goes down. Over time, this strategy helps you save more and shields you from rising electricity costs.

Increase the Value of Your Home

Adding a solar + storage system doesn’t just cut costs, it’s a smart home improvement. Buyers are increasingly drawn to energy-efficient homes with reliable backup power. According to multiple studies, homes with solar panels sell faster and for more money, and a battery system adds even more appeal.

Why Homeowners Choose Fortress Power

Fortress Power specializes in advanced lithium iron phosphate (LFP) battery technology—engineered for performance, safety, and longevity. Whether you’re building a new system or upgrading your existing solar setup, we offer flexible solutions that give you full control over your energy future.

 

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✅ 15-Year Warranty (with extended 30-year option)
✅ Whole-Home Backup Ready
✅ Compatible with Top Inverters
✅ Scalable for Any Home Size

The Bottom Line: Yes, Solar Storage is Worth It—and Timing Matters

Solar battery storage is one of the smartest investments homeowners can make in 2025. With the 30% tax credit still in full effect, rising utility prices, and more extreme weather, now is the time to future-proof your home with reliable, affordable backup power. Don’t wait until incentives drop or your next power outage hits. Take control of your energy and request a quote today.

Fortress Power Launches Industry-Leading 15-Year Warranty for eForce Energy Storage System

Press Release

System Owners Receive Long-Term Peace of Mind with Transferable, Extended Warranty Coverage

Langhorne, PA – August 5, 2025: Fortress Power, a global leader in advanced battery energy storage solutions, is proud to introduce its new 15-year limited warranty for the eForce battery when it is installed as part of the complete eForce Energy Storage System (ESS). This groundbreaking warranty applies when customers install the full Fortress Power solution: any eForce battery, Envy inverter, and Guardian Gateway.

The new warranty offers unmatched confidence and protection—covering up to 15 years or 8,000 discharge cycles at 80% depth of discharge (DoD), whichever comes first. This coverage exceeds most industry competitors and underscores Fortress Power’s commitment to delivering long-term value and reliability. “Our mission has always been to work hand in hand with our distributor and installer partners to deliver clean and reliable energy to homes and businesses—while helping them reduce energy costs,” said Jing Yu, CEO of Fortress Power.

“With this extended warranty, we’re offering more than just a power solution—we’re offering peace of mind,” added Yu. “We want every system owner to feel confident that their investment is protected for the long haul, and our new 15-year coverage reflects that commitment.”

Why This Warranty Stands Out:

  • 15 Years of Coverage: The longest standard warranty period available for battery energy storage systems.
  • Transferable: Coverage can be transferred to a new owner if the original purchaser sells the property.
  • Widespread Validity: Available for installations in the United States, Puerto Rico, and the U.S. Virgin Islands.

The Fortress Power eForce ESS is a next-generation all-in-one system designed for power, performance, and scalability. Each 9.6kWh LFP battery module is stackable and weather-resistant, with built-in heating for cold climates. Up to 16 batteries can combine into a 153kWh system. The system integrates via the eWay, a specialized wireway with built-in busbars, conduit ports, and an emergency switch. The Envy inverter bolts directly onto the eWay, forming a sleek and efficient tower, and the system is monitored and managed through the Guardian Gateway and mobile app. With real-time LEDs, fast-charging, and UL9540 certification, the eForce ESS is built for reliability and longevity.

Whether you’re powering a home, or small business, the Fortress Power eForce ESS now comes backed by one of the industry’s longest and most comprehensive warranties—bringing confidence, security, and savings well into the future.

To learn more about Fortress Power and its extended warranty offerings, visit www.fortresspower.com.

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Headquartered in Langhorne, PA, Fortress Power is a global leader in designing and manufacturing advanced Lithium Iron Phosphate (LFP) battery energy storage systems for residential, commercial, and industrial applications. The company operates across North America, the Caribbean, Central America, and Asia. With award-winning local live technical support and partnerships with leading financial institutions, Fortress Power makes investing in solar and storage simple, accessible, and highly reliable.

Media Contact:
Anthony Pingicer
Marketing Director
Fortress Power
[email protected]
877-497-6937