Keep the power on during
Hurricane Season

Reliable Whole Home Energy Backup Solutions

Hurricane season is often times a reminder of how devastating it can be losing power for extended periods during a storm. Keep the lights on when it matters most – independent of the energy grid.  Our energy storage systems are smart, powerful and able to backup your whole home in the event of a power outage. You can even use them to go completely off the grid and gain true energy independence


How does Whole Home Backup Work?

Solar panels first convert solar energy into DC power using what is known as the photovoltaic (PV) effect. The DC power can then be stored in a battery or converted by an inverter into AC power which can be used to run home appliances. The Fortress Power Envy True 12 inverter combined with Fortress Power Battery Storage can provide up to 12kW of backup power when the grid is down.

Already have Solar? Fortress Power Batteries can easily be added on to existing Solar PV Systems. Your existing solar panel array and inverter can charge Fortress Power batteries during the day, and you can use the energy when the power goes out, or at night.

Fortress Power Envy - Off-Grid Diagram
Energy Grid Independence

Why Choose Fortress Power?

Fortress Power products use the latest cell technology that provides higher efficiency and a longer life span than other systems. The chart below compares the Fortress Power Lithium Iron Phosphate solution to other systems on the market.
Fortress Power Batteres Longer Lifespan and Lower Cost per kWh
Fortress Power Solution
Other Lithium-ion Solutions
Lead Acid
ApplicationsBackup Power, time of use, self-consumption, and off-gridBackup Power, time of use, self-consumption, and off-gridBackup PowerBackup Power
Depth of Discharge100% 100% 50%N/A
Battery ChemistrySafe TechnologyPotential thermal runway or firingRisk of harmful gasses Environmental Pollution
Life Cycles8,000+ (15+ years) 3,000 500-1,000 N/A
Warranty10 years 10 years 6 months 2 years
Fuel cost $0$0$0$70-$130 per day
MaintenanceNoNoEvery 6 months Yes
Energy Cost ($/kWh)0.14 0.300.650.50

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