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Fortress Power

Fortress Power has proudly serviced homeowners and commercial clients worldwide. Their Pennsylvania-based team’s passion for clean energy storage has earned them a place among the world’s top energy storage battery manufacturers. Fortress Power prides themselves on bringing businesses and households energy storage products they can depend on, built from only the highest quality, highest powered lithium ferrite phosphate batteries.

Fortress Power delights in bringing our customers intelligently designed energy technologies, delivered with a personalized touch. From the minute you contact us, Fortress Power’s team members promise to work with you to find the battery that will best adapt to your needs. And after our technicians complete your battery’s installation, Fortress Power stays in touch to ensure you’re satisfied and on your way to energy independence. So not only our are products responsive to your home or small business’s demands, but we are, too.

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Fortress Power > 48 Volt 5.4kWh (105AH) LiFeP04 Battery Fortress Power > DuraRack Battery Enclosure - IP65 Rated Indoor / Outdoor Fortress Power 16.2kWh Bundle > 12kW Inverter, Storage with DuraRack Enclosure
Our Price: $2,583.00
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Our Price: $1,611.00
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Our Price: $18,880.00
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Fortress Power eFlex 5.4 G2 > 48 Volt 5.4kWh (105AH) Battery - Lithium Iron Phosphate (LiFeP04) Fortress Power DuraRack > Battery Enclosure for eFlex 5.4 kWh Lithium Batteries - IP65 Rated Indoor / Outdoor Fortress Power Envy 12k and DuraRack 16.2kWh eFlex Bundled Kit > True Envy 12kW Inverter, 16.2 kWh (315AH) eFlex Batteries and DuraRack Enclosure | Energy Storage System - Indoor / Outdoor Enclosure
Fortress Power
48 Volt 5.4kWh (105AH) Battery
Lithium Iron Phosphate (LiFeP04) eFlex 5.4 G2
Fortress Power
Battery Enclosure for eFlex 5.4 kWh Lithium Batteries
IP65 Rated Indoor / Outdoor
DuraRack Battery Enclosure
Fortress Power
True Envy 12kW Inverter, 16.2 kWh (315AH) eFlex Batteries
with DuraRack Indoor / Outdoor Enclosure
Energy Storage System
Envy 12k and DuraRack 16.2kWh eFlex Bundled Kit
Fortress Power 16.2kWh Bundle > 12kW Inverter, Storage with FlexTower Enclosure Fortress Power 21.6kWh Bundle > 12kW Inverter, Storage w DuraRack Enclosure Fortress Power 21.6kWh Bundle > 12kW Inverter, Storage with FlexTower Enclosure
Our Price: $21,871.00
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Our Price: $17,297.00
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Our Price: $18,663.00
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Fortress Power Envy 12k and FlexTower 16.2kWh Bundled Kit > True Envy 12kW Inverter, 16.2 kWh (315AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System - Indoor / Outdoor Enclosure Fortress Power Envy 12k and DuraRack 21.6kWh eFlex Bundled Kit > True Envy 12kW Inverter, 21.6 kWh (315AH) eFlex Batteries and DuraRack Enclosure | Energy Storage System - Indoor / Outdoor Enclosure Fortress Power Envy 12k and FlexTower 21.6kWh Bundled Kit > True Envy 12kW Inverter, 21.6 kWh (420AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System - Indoor / Outdoor Enclosure
Fortress Power
True Envy 12kW Inverter, 16.2 kWh (315AH) eFlex Batteries and
FlexTower Enclosure All-in-One Energy Storage System
Indoor / Outdoor Enclosure
Envy 12k and FlexTower 16.2kWh Bundled Kit
Fortress Power
True Envy 12kW Inverter, 21.6 kWh (315AH) eFlex Batteries
with DuraRack Indoor / Outdoor Enclosure
Energy Storage System
Envy 12k and DuraRack 21.6kWh eFlex Bundled Kit
Fortress Power
True Envy 12kW Inverter, 21.6 kWh (420AH) eFlex Batteries and
FlexTower Enclosure All-in-One Energy Storage System
Indoor / Outdoor Enclosure
Envy 12k and FlexTower 21.6kWh Bundled Kit
Fortress Power DuraRack 16.2 kWh Bundle > 3 eFlex 5.4 Batteries with Enclosure Fortress Power DuraRack 21.6 kWh Bundle > 4 eFlex 5.4 Batteries with Enclosure Fortress Power Envy 8kW > 8,000 Watt 48 Volt All-In-One Solar Inverter
Our Price: $10,584.00
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Our Price: $13,575.00
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Our Price: $5,062.00
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Fortress Power DuraRack and eFlex 5.4 Bundle > Outdoor Rated DuraRack Battery Storage Rack with 3 eFlex 5.4 Batteries 48 volt 16.2 kWh (315AH) Batteries - Indoor / Outdoor Enclosure Fortress Power DuraRack and eFlex 5.4 Bundle > Outdoor Rated DuraRack Battery Storage Rack with 4 eFlex 5.4 Batteries 48 volt 21.6 kWh (315AH) Batteries - Indoor / Outdoor Enclosure Fortress Power Envy 8kW > 8,000 Watt 48 Volt All-In-One Solar Inverter
Fortress Power
Outdoor Rated DuraRack Battery Storage Rack with
3 eFlex 5.4 Batteries 48 volt 16.2 kWh (315AH) Batteries
Indoor / Outdoor Enclosure
DuraRack and eFlex 5.4 Bundle
Fortress Power
Outdoor Rated DuraRack Battery Storage Rack with
4 eFlex 5.4 Batteries 48 volt 21.6 kWh (315AH) Batteries
Indoor / Outdoor Enclosure
DuraRack and eFlex 5.4 Bundle
Fortress Power
8,000 Watt 48 Volt All-In-One Solar Inverter
Envy 8kW
Fortress Power eSpire Mini 208VAC > Commercial Battery Storage Backup System Fortress Power eSpire Mini 480VAC > Commercial Battery Storage Backup System Fortress Power eVault Max 18.5 > 48 Volt 18.5kWh Battery - Lithium Iron Phosphate (LiFeP04)
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Our Price: $9,999.00
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Fortress Power eSpire Mini 208 > 30-60kW, 81-246kWh, 208/480 VAC Commercial Battery Energy Storage System (BESS) - Home or Business Battery Backup Fortress Power eSpire Mini ESS 480 > 30-90kW, 81-266kWh, 480 VAC Commercial Battery Energy Storage System (BESS) - Home or Business Battery Backup Fortress Power eVault Max 18.5 > 48 Volt 18.5kWh Battery - Lithium Iron Phosphate (LiFeP04)
Fortress Power
30-60kW, 81-246kWh, 208/480 VAC
Commercial Battery Energy Storage System (BESS)
Home or Business Battery Backup
eSpire Mini ESS 208
Fortress Power
30-90kW, 81-266kWh, 480 VAC
Commercial Battery Energy Storage System (BESS)
Home or Business Battery Backup
eSpire Mini ESS 480
Fortress Power
48 Volt 18.5kWh Battery
Lithium Iron Phosphate (LiFeP04) - eVault Max 18.5
Fortress Power FlexTower > Outdoor Rated All-in-One Energy Storage System - Indoor / Outdoor Enclosure Fortress Power FlexTower 16.2 kWh Bundle > 3 eFlex 5.4 Batteries with Enclosure Fortress Power FlexTower 21.6 kWh Bundle > 4 eFlex 5.4 Batteries with Enclosure
Our Price: $3,221.00
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Our Price: $10,481.00
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Our Price: $13,064.00
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Fortress Power FlexTower Enclosure > Outdoor Rated All-in-One Energy Storage System - Indoor / Outdoor Enclosure Fortress Power FlexTower 16.2kWh Bundle > 48 volt 16.2 kWh (315AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System - Indoor / Outdoor Enclosure and three eFlex 5.4 Batteries Fortress Power FlexTower 21.6kWh Bundle > 48 volt 21.6 kWh (420AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System - Indoor / Outdoor Enclosure w/ four eFlex 5.4 Batteries
Fortress Power
Outdoor Rated All-in-One Energy Storage System
Indoor / Outdoor Enclosure - FlexTower
Fortress Power
48 volt 16.2 kWh (315AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System
Indoor / Outdoor Enclosure and three eFlex 5.4 Batteries
FlexTower 16.2kWh Bundle
Fortress Power
48 volt 21.6 kWh (420AH) eFlex Batteries and FlexTower Enclosure All-in-One Energy Storage System
Indoor / Outdoor Enclosure w/ four eFlex 5.4 Batteries
FlexTower 21.6kWh Bundle
Fortress Power Guardian > Battery Monitoring Gateway - for eFlex & eVault Max Fortress Power LFP-10 Max > 10kWh LiFeP04 Battery Storage w 10 Year Warranty - Non-UL Fortress Power LFP-10 Max > 10kWh LiFeP04 Battery Storage w 5 Year Warranty - Non-UL
Our Price: $399.00
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Our Price: $5,500.00
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Our Price: $4,750.00
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Fortress Power Guardian > Battery Monitoring Gateway - for eFlex & eVault Max Fortress Power LFP-10 Max > 48 Volt 10kWh Battery Storage - Lithium Iron Phosphate (LiFeP04) - Non-UL - with 10 Year Warranty Fortress Power LFP-10 Max > 48 Volt 10kWh Battery Storage - Lithium Iron Phosphate (LiFeP04) - Non-UL - with 5 Year Warranty
Fortress Power
Battery Monitoring Gateway - for eFlex & eVault Max
Guardian
Fortress Power
48 Volt 10kWh Battery Storage - Lithium Iron Phosphate (LiFeP04)
with 10 Year Warranty - LFP-10 Max
Fortress Power
48 Volt 10kWh Battery Storage - Lithium Iron Phosphate (LiFeP04)
with 5 Year Warranty - LFP-10 Max
Fortress Power True Envy 12kW > 12,000 Watt 48 Volt All-In-One Solar Inverter Kit of Eco-Cable 18.0008-BB-45 > 4 AWG Battery Cable for Fortress FlexRack Battery Rack System Kit - 8 Cables Kit Sol-Ark 12k EMP Inverter with Fortress Power eFlex 16.2kWh Battery Storage
Our Price: $6,289.00
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Our Price: $65.00
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Our Price: $16,506.00
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Fortress Power Envy True 12kW > 12,000 Watt 48 Volt All-In-One Solar Inverter Eco-Cable 18.0008-BB-45 > 4 AWG Battery Cable for Fortress FlexRack Battery Rack System Kit - 8 Cables Kit Sol-Ark 12,000 Watt SA-EMP Inverter with Fortress Power eFlex 16.2kWh Battery Storage Kit
Fortress Power
12kW 48V All-In-One Solar Inverter
Envy True 12kW
Eco-Cable
4 AWG Battery Cable for Fortress FlexRack Battery Rack System Kit
8 Cables Kit - 18.0008-BB-45
Sol-Ark
12,000 Watt SA-EMP Inverter
with Fortress Power eFlex 16.2kWh Battery Storage Kit
Sol-Ark 12k Inverter with Fortress Power eFlex 16.2kWh Battery Storage Sol-Ark 8k Inverter with Fortress Power eFlex 10.8kWh Battery Storage
Our Price: $14,608.00
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Our Price: $11,680.00
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Sol-Ark 12,000 Watt Inverter with Fortress Power eFlex 16.2kWh Battery Storage Kit Sol-Ark 8000 Watt Inverter with Fortress Power eFlex 10.8kWh Battery Storage Kit
Sol-Ark
12,000 Watt Inverter
with Fortress Power eFlex 16.2kWh Battery Storage Kit
Sol-Ark
8000 Watt Inverter
with Fortress Power eFlex 10.8kWh Battery Storage Kit
   
 
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