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Free-Shipping on orders over $4,000

On U.S. mainland orders $4,000+ now through December 31, 2025.
(Excludes orders with only solar panels)

Save $100 on the Fortress Power Solo 6.5k Off-Grid Inverter

Due to popular demand, available for Pre-order. Product begins shipping December 1st.

Free Guardian ($569 Value) with Envy + eForce Bundle

Plus, 15-year battery warranty and VPP participation

Free-shipping on orders over $4,000

On U.S. mainland orders $4,000+ now through December 31, 2025.
(Excludes orders with only solar panels)

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Save $900.00 Fortress Power Solo 6.5kW Off-Grid Solar Bundle with 10.8kWh eFlex MAX Batteries
Fortress Power Solo 6.5kW Off-Grid Solar Bundle with 10.8kWh eFlex MAX Batteries $5,561.00 $4,661.00
Save $100.00 Fortress Power Solo 6.5K Off-Grid Inverter | All-in-One | 48V
Fortress Power Solo 6.5K Off-Grid Inverter | All-in-One | 48V $1,649.00 $1,549.00
Save $450.00 Fortress Power eFlex Max 5.4kWh Small Solar Battery
Fortress Power eFlex MAX 5.4kWh Lithium Solar Battery $1,899.00 From $1,449.00
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Save $333.00 Fortress Power eBoost 16kWh Lithium Battery + Envy Duo 21 Hybrid Inverter 16kW Output | DIY Solar Systems Kits
Fortress Power eBoost 16kWh Lithium Battery + Envy Duo 21 Hybrid Inverter 16kW Output | DIY Solar Systems Kits $9,288.00 $8,955.00
Save $830.00 Fortress Power eForce 19.2kWh + Envy True 12kW Hybrid Inverter Bundle
Fortress Power eForce 19.2kWh + Envy True 12kW Hybrid Inverter Bundle $13,767.00 $12,937.00
Fortress Power eBoost 16kWh Solar Battery + eWay Conduit Box with 750A Busbars for Paralleling | 48V 314Ah | DIY-Friendly Home Backup | UL9540A
Fortress Power eBoost 16kWh Solar Battery + eWay Conduit Box with 750A Busbars for Paralleling | 48V 314Ah | DIY-Friendly Home Backup | UL9540A From $3,445.00
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Save $100.00 Fortress Power eBoost 16kWh LFP Battery + Solo 6.5kW Inverter | Off Grid Solar Battery Backup System
Fortress Power eBoost 16kWh LFP Battery + Solo 6.5kW Inverter | Off Grid Solar Battery Backup System $5,539.00 $5,439.00
Fortress Power eBoost 16kWh Solar Battery with eWay Lite | Simplified DIY Wiring Solution
Fortress Power eBoost 16kWh Solar Battery with eWay Lite | Simplified DIY Wiring Solution From $3,445.00
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Save $100 on the Fortress Power Solo 6.5k Off-Grid Inverter

Due to popular demand, available for Pre-order. Product begins shipping December 1st.

Fortress Power Solo 6.5K Off-Grid Inverter | All-in-One | 48V

$1,649.00 $1,549.00 Save $100.00
Shipping calculated at checkout.

Receive a Free Guardian Gateway when you purchase an eForce + Envy Inverter

Plus, 15-year battery warranty and VPP participation — now through December 31, 2025.

Fortress Power eForce 19.2kWh lifepo4 home battery Fortress Power eForce 19.2kWh lifepo4 home battery
Fortress Power eForce 19.2kWh home power battery Fortress Power eForce 19.2kWh home power battery
Fortress Power eForce 9.6kWh Lithium Ion Battery Control eWay Fortress Power eForce 9.6kWh Lithium Ion Battery Control eWay
Fortress Envy 12kW hybrid inverter with solar power system components Fortress Envy 12kW hybrid inverter with solar power system components
Fortress Power Envy True 12kW 3 MPPT Solar Inverter Fortress Power Envy True 12kW 3 MPPT Solar Inverter
Fortress Power Envy True 12kW 48V On Grid Inverter Package Fortress Power Envy True 12kW 48V On Grid Inverter Package
Fortress Power Envy 12kW Hybrid Grid-tie inverter Fortress Power Envy 12kW Hybrid Grid-tie inverter
Fortress Power eForce 19.2kWh lifepo4 home battery
Fortress Power eForce 19.2kWh home power battery
Fortress Power eForce 9.6kWh Lithium Ion Battery Control eWay
Fortress Envy 12kW hybrid inverter with solar power system components
Fortress Power Envy True 12kW 3 MPPT Solar Inverter
Fortress Power Envy True 12kW 48V On Grid Inverter Package
Fortress Power Envy 12kW Hybrid Grid-tie inverter

Fortress Power eForce 19.2kWh + Envy True 12kW Hybrid Inverter Bundle

$13,767.00 $12,937.00 Save $830.00
Shipping calculated at checkout.