Fortress Power LLC

FP-Mega-S1-O

Battery · 1 exact configuration · California, US

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i

A registry listing is a starting point. CEC inclusion is not nationwide installation approval. Confirm the exact model and configuration with your utility and local authority.

How to use this data

Equipment overview

52 kW, 104.499 kWh, lithium ion battery

The figures below refer to FP-Mega-S1-O. Use the configuration table for other variants.

Continuous discharge power
52 kW
Battery voltage (DC)
Not reported
Nameplate energy capacity
104.499 kWh
Technology
Lithium Ion
JA12 declaration
N

Specifications are reported in the CEC source; SolarApprovals has not independently tested this equipment. A missing value does not mean zero or a failed certification.

Exact configurations

CEC annotations in braces identify the listed configuration and are not part of the manufacturer’s model number. Variants share this canonical page.

Exact CEC configurations for FP-Mega-S1-O
CEC model / configurationContinuous discharge powerCapacityObservationCompare
FP-Mega-S1-OBattery row 20152 kW104.499 kWhListed in CEC

Source specifications and conditions

Additional source information for FP-Mega-S1-O. Qualifiers, reported control modes and required devices are retained as written. Power-control listings do not establish arbitrary battery/inverter pairings.

UL 1973 edition
Ed. 3 : 2022
CEC listing date
2026-09-11
UL 1973 certificate date
2025-12-24
UL 1973 certifying entity
UL
Certified JA12 control strategies
No Information Submitted
Manufacturer-declared round-trip efficiency (%)
No Information Submitted

Documented compatibility

No specific equipment pairing has been verified for this model.

Shared voltage, a hybrid designation, or the same manufacturer does not establish compatibility. Check the manufacturer’s installation documents for exact model combinations, firmware, and operating conditions.

Registry observation history

Dates show when SolarApprovals observed a status. The first observation is not the original CEC listing date. History begins with our first import.

  • Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECFP-Mega-S1-O
    Archived CEC source