Products
![Fortress Power Avalon High Voltage ESS](https://www.fortresspower.com/wp-content/uploads/2023/08/Fortress-Power-Avalon-High-Voltage-ESS.png)
Avalon High Voltage ESS
High Voltage Smart Energy Storage System
![evault max square](https://www.fortresspower.com/wp-content/uploads/2022/04/evault-max-square-150x150.jpg)
eVault Max 18.5
eVault MAX 18.5 kWh Lithium Iron Phosphate Battery
![eflex-square eflex-square](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/eflex-square-pmx9yibcep0zcmb1q5j8j0tggiu0jos8euoxa42txc.jpg)
eFlex 5.4
eFlex 5.4 kWh Lithium Iron Phosphate Battery
![Envy True 12 Inverter – screen on Fortress Power Envy True 12 - 12kW Inverter](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/Envy-True-12-Inverter-screen-on-e1683913499704-q6d6q6hfnkk5dv54fasoycrtuxif2eq4tk9wvfihlg.png)
Envy True 12
Envy 12kW 48v Inverter for Fortress Power Batteries
![ENVY-8-10K-front ENVY inverter front face](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/ENVY-8-10K-front-qd15gisfpcd9kaibwbcfo0kmd1zhc8pekn13ld3pg4.png)
Envy 8k/10k
Envy 8kW & 10kW 48v Inverter for Fortress Power Batteries
![all-in-one-square all-in-one-square](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/all-in-one-square-pmx3blo706cnalt60mge4jow4x0e4fzf7r7mkhqsno.jpg)
FlexTower All-In-One
Indoor / Outdoor rated all-in-one energy storage system
![durarack square](https://www.fortresspower.com/wp-content/uploads/2022/04/durarack-square-150x150.jpg)
DuraRack
Indoor / Outdoor IP65 rated Battery Cabinet
![guardian-square guardian-square](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/guardian-square-pmx5byb1hsxx8wcop2p0pqfvilxcdgopeh4rn4ddp0.jpg)
Guardian Gateway
Smart Energy Storage Monitoring Solution
![Fortress-Power-eSpire-Mini-1 Fortress-Power-eSpire-Mini-1](https://www.fortresspower.com/wp-content/uploads/elementor/thumbs/Fortress-Power-eSpire-Mini-1-q1rrkm76f8vvg04ujgkzdaz9u6nz3dwdvjkggt4iok.png)
eSpire Mini
Large Residential and Light C&I
Energy Storage Solution
![MicrosoftTeams image 16](https://www.fortresspower.com/wp-content/uploads/2023/09/MicrosoftTeams-image-16-150x150.png)
eSpire 280
Commercial and Industrial Energy Storage Solution
![LFP 10 MAX Front](https://www.fortresspower.com/wp-content/uploads/2022/06/LFP-10-MAX-Front-150x150.png)
LFP-10 MAX
LFP-10 MAX 10kWh Lithium Iron Phosphate Battery
![Modbus Tool](https://www.fortresspower.com/wp-content/uploads/2021/10/ModbusTool-150x150.png)
Spare Parts / Accessories
Spare Parts and Accessories for our batteries and 3rd party products
Our solutions
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Annual Energy Savings
Energy Generated Annually
Installed Units
Achieved Grid Independence
Fortress Power
Maximize Your Savings
Our integrated battery backup power solutions have helped homeowners save over $6 million dollars in energy costs.