Living Off the Grid
Total Energy Independence Starts Here
From hurricanes and wildfires to aging utility infrastructure, power outages are more frequent and unpredictable than ever. Fortress Power energy storage systems are designed to keep your home or business running smoothly during grid failures — without the noise, fuel, or maintenance of a traditional generator.
How It Works
An off-grid system combines solar panels, battery storage, and often a backup generator to supply all of your home’s electricity without relying on the utility grid. Fortress Power’s lithium iron phosphate (LFP) batteries are the heart of that setup — safely storing solar energy during the day and delivering it at night or during cloudy weather.
Our modular systems scale to fit any home size or load profile, and our intuitive monitoring tools make it easy to manage your energy use 24/7.
Why More Homeowners Are Going Off-Grid
The rise in utility outages, increasing electricity rates, and desire for sustainable living have pushed thousands of homeowners to make the switch to off-grid life. And with solar + storage technology more affordable and reliable than ever, it’s no longer just for remote cabins — it’s for anyone who wants freedom, resilience, and control.
A properly designed off-grid system can power your entire home year-round — with no electric bill and no dependence on the grid.
Why Fortress Power for Off-Grid Living?
Scalable battery systems from 5 kWh to over 150 kWh
Outdoor-rated enclosures for all-weather performance
Safe, non-toxic LFP chemistry with built-in thermal protection
Seamless integration with solar panels, generators, and leading inverters
Real-time system monitoring and diagnostics via our Guardian Gateway
Long lifespan with industry-leading warranties on batteries and inverters
Built to Last: Battery Lifespan Comparison
When you’re living off the grid, your battery’s longevity matters. Fortress Power’s lithium iron phosphate (LFP) batteries are rated for up to 8,000 charge cycles, significantly outperforming Tesla Powerwall and traditional lead-acid batteries. That means more years of reliable, maintenance-free power — and fewer replacements over the life of your system.
*One cycle = one full charge and discharge. Lifespan estimates based on typical daily cycling usage.
Lower Cost Over Time: Price Per kWh Comparison
Upfront price is only part of the story. When you factor in total energy delivered over a battery’s lifetime, Fortress Power offers one of the lowest costs per kilowatt-hour in the industry. Thanks to its long cycle life and high efficiency, our systems deliver more value over time than Tesla Powerwall and lead-acid alternatives — making it a smarter long-term investment for off-grid living.
*Cost per kWh calculated by dividing upfront system cost by total usable energy over the battery’s lifetime.
How Fortress Power Compares to Other Backup Solutions
Not all backup power is created equal. While traditional generators and older battery technologies offer some protection during outages, they come with limitations — from noise and maintenance to short lifespans and safety concerns. Fortress Power’s lithium iron phosphate (LFP) systems deliver clean, reliable, and long-lasting energy you can count on — with fewer compromises and more control.
Features | Fortress Power Solution | Other Lithium-ion Solutions
| Lead Acid | Generator |
|---|---|---|---|---|
| Applications | Backup Power, time of use, self-consumption, and off-grid | Backup Power, time of use, self-consumption, and off-grid | Backup Power | Backup Power |
| Depth of Discharge | 100% | 100% | 50% | N/A |
| Battery Chemistry | Safe Technology | Potential thermal runway or firing | Risk of harmful gasses | Environmental Pollution |
| Life Cycles | 8,000+ (15+ years) | 3,000 | 500-1,000 | N/A |
| Warranty | 10 years | 10 years | 6 months | 2 years |
| Fuel cost | $0 | $0 | $0 | $70-$130 per day |
| Maintenance | No | No | Every 6 months | Yes |
| Energy Cost ($/kWh) | 0.14 | 0.30 | 0.65 | 0.50 |
Ready to Go Off-Grid with Confidence?
Let us help you design a fully independent energy system that fits your home, lifestyle, and goals.
