Fortress Power LLC Avalon-ESS

The Fortress Power LLC Avalon-ESS is a home battery range from Fortress Power LLC with 78 models. Models store 9.8 kWh – 98 kWh in Lithium Ion cells. Rated AC power 5 kW – 34.2 kW. Listed and verified: UL 9540. Sold in United States.

Specifications

Capacity: 9.8 kWh – 98 kWh
Battery chemistry: Lithium Ion
Rated AC power: 5 kW – 34.2 kW
Models in this range: 78

Product details

Product type: Home battery
Brand: Fortress Power LLC
Category: Home Battery Storage
Sold in: United States
Listed in: California Energy Commission

Models (78)

Model	Nominal capacity	AC power
Avalon-ESS-11.4P1-9.8P1M2	9.8 kWh	11.4 kVA
Avalon-ESS-5P1-9.8P1M2	9.8 kWh	5 kVA
Avalon-ESS-7.6P1-9.8P1M2	9.8 kWh	7.6 kVA
Avalon-ESS-11.4P1-14.7P1M3	14.7 kWh	11.4 kVA
Avalon-ESS-5P1-14.7P1M3	14.7 kWh	5 kVA
Avalon-ESS-7.6P1-14.7P1M3	14.7 kWh	7.6 kVA
Avalon-ESS-11.4P1-19.6P1M4	19.6 kWh	11.4 kVA
Avalon-ESS-11.4P1-19.6P2M2	19.6 kWh	11.4 kVA
Avalon-ESS-11.4P2-19.6P1M2	19.6 kWh	22.8 kVA
Avalon-ESS-5P1-19.6P1M4	19.6 kWh	5 kVA
Avalon-ESS-5P1-19.6P2M2	19.6 kWh	5 kVA
Avalon-ESS-5P2-19.6P1M2	19.6 kWh	10 kVA
Avalon-ESS-7.6P1-19.6P1M4	19.6 kWh	7.6 kVA
Avalon-ESS-7.6P1-19.6P2M2	19.6 kWh	7.6 kVA
Avalon-ESS-7.6P2-19.6P1M2	19.6 kWh	15.2 kVA
Avalon-ESS-11.4P1-24.5P1M5	24.5 kWh	11.4 kVA
Avalon-ESS-5P1-24.5P1M5	24.5 kWh	5 kVA
Avalon-ESS-7.6P1-24.5P1M5	24.5 kWh	7.6 kVA
Avalon-ESS-11.4P1-29.4P1M6	29.4 kWh	11.4 kVA
Avalon-ESS-11.4P1-29.4P2M3	29.4 kWh	11.4 kVA
Avalon-ESS-11.4P2-29.4P1M3	29.4 kWh	22.8 kVA
Avalon-ESS-11.4P3-29.4P1M2	29.4 kWh	34.2 kVA
Avalon-ESS-5P1-29.4P1M6	29.4 kWh	5 kVA
Avalon-ESS-5P1-29.4P2M3	29.4 kWh	5 kVA
Avalon-ESS-5P2-29.4P1M3	29.4 kWh	10 kVA
Avalon-ESS-5P3-29.4P1M2	29.4 kWh	15 kVA
Avalon-ESS-7.6P1-29.4P1M6	29.4 kWh	7.6 kVA
Avalon-ESS-7.6P1-29.4P2M3	29.4 kWh	7.6 kVA
Avalon-ESS-7.6P2-29.4P1M3	29.4 kWh	15.2 kVA
Avalon-ESS-7.6P3-29.4P1M2	29.4 kWh	22.8 kVA
Avalon-ESS-11.4P1-39.2P2M4	39.2 kWh	11.4 kVA
Avalon-ESS-11.4P2-39.2P1M4	39.2 kWh	22.8 kVA
Avalon-ESS-11.4P2-39.2P2M2	39.2 kWh	22.8 kVA
Avalon-ESS-5P1-39.2P2M4	39.2 kWh	5 kVA
Avalon-ESS-5P2-39.2P1M4	39.2 kWh	10 kVA
Avalon-ESS-5P2-39.2P2M2	39.2 kWh	10 kVA
Avalon-ESS-7.6P1-39.2P2M4	39.2 kWh	7.6 kVA
Avalon-ESS-7.6P2-39.2P1M4	39.2 kWh	15.2 kVA
Avalon-ESS-7.6P2-39.2P2M2	39.2 kWh	15.2 kVA
Avalon-ESS-11.4P3-44.1P1M3	44.1 kWh	34.2 kVA
Avalon-ESS-5P3-44.1P1M3	44.1 kWh	15 kVA
Avalon-ESS-7.6P3-44.1P1M3	44.1 kWh	22.8 kVA
Avalon-ESS-11.4P1-49P2M5	49 kWh	11.4 kVA
Avalon-ESS-11.4P2-49P1M5	49 kWh	22.8 kVA
Avalon-ESS-5P1-49P2M5	49 kWh	5 kVA
Avalon-ESS-5P2-49P1M5	49 kWh	10 kVA
Avalon-ESS-7.6P1-49P2M5	49 kWh	7.6 kVA
Avalon-ESS-7.6P2-49P1M5	49 kWh	15.2 kVA
Avalon-ESS-11.4P1-58.8P2M6	58.8 kWh	11.4 kVA
Avalon-ESS-11.4P2-58.8P1M6	58.8 kWh	22.8 kVA
Avalon-ESS-11.4P2-58.8P2M3	58.8 kWh	22.8 kVA
Avalon-ESS-11.4P3-58.8P1M4	58.8 kWh	34.2 kVA
Avalon-ESS-11.4P3-58.8P2M2	58.8 kWh	34.2 kVA
Avalon-ESS-5P1-58.8P2M6	58.8 kWh	5 kVA
Avalon-ESS-5P2-58.8P1M6	58.8 kWh	10 kVA
Avalon-ESS-5P2-58.8P2M3	58.8 kWh	10 kVA
Avalon-ESS-5P3-58.8P1M4	58.8 kWh	15 kVA
Avalon-ESS-5P3-58.8P2M2	58.8 kWh	15 kVA
Avalon-ESS-7.6P1-58.8P2M6	58.8 kWh	7.6 kVA
Avalon-ESS-7.6P2-58.8P1M6	58.8 kWh	15.2 kVA
Avalon-ESS-7.6P2-58.8P2M3	58.8 kWh	15.2 kVA
Avalon-ESS-7.6P3-58.8P1M4	58.8 kWh	22.8 kVA
Avalon-ESS-7.6P3-58.8P2M2	58.8 kWh	22.8 kVA
Avalon-ESS-11.4P3-73.5P1M5	73.5 kWh	34.2 kVA
Avalon-ESS-5P3-73.5P1M5	73.5 kWh	15 kVA
Avalon-ESS-7.6P3-73.5P1M5	73.5 kWh	22.8 kVA
Avalon-ESS-11.4P2-78.4P2M4	78.4 kWh	22.8 kVA
Avalon-ESS-5P2-78.4P2M4	78.4 kWh	10 kVA
Avalon-ESS-7.6P2-78.4P2M4	78.4 kWh	15.2 kVA
Avalon-ESS-11.4P3-88.2P1M6	88.2 kWh	34.2 kVA
Avalon-ESS-11.4P3-88.2P2M3	88.2 kWh	34.2 kVA
Avalon-ESS-5P3-88.2P1M6	88.2 kWh	15 kVA
Avalon-ESS-5P3-88.2P2M3	88.2 kWh	15 kVA
Avalon-ESS-7.6P3-88.2P1M6	88.2 kWh	22.8 kVA
Avalon-ESS-7.6P3-88.2P2M3	88.2 kWh	22.8 kVA
Avalon-ESS-11.4P2-98P2M5	98 kWh	22.8 kVA
Avalon-ESS-5P2-98P2M5	98 kWh	10 kVA
Avalon-ESS-7.6P2-98P2M5	98 kWh	15.2 kVA

Certifications

Certification	Market	Status	Reference	Valid until
UL 9540	United States and Canada	✓ Verified 19 October 2026	Intertek

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