aPower Syyy

Equipment overview

10 kW, 15 kWh, 208 Vac, energy storage system. "y" in the models name could be A-Z, 0-9, symbol "-" or blank. ESS with PCS functionality.

The figures below refer to aPower Syyy {208V, 10kW}. Use the configuration table for other variants.

Nameplate power

10 kW

Nominal AC voltage

208 V AC

Nameplate energy capacity

15 kWh

Technology

Lithium Iron Phosphate

UL 1741 SB in CEC source

Reported

JA12 declaration

Y (2025)

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.

Source specifications and conditions

Additional source information for aPower Syyy {208V, 10kW}. Qualifiers, reported control modes and required devices are retained as written. Power-control listings do not establish arbitrary battery/inverter pairings.

Brand

FranklinWH

CEC listing date

2025-03-11

Source last update

2025-11-12

PV DC input capability

Y

UL 9540 certificate date

2025-09-30

UL 9540 certifying entity

CSA Group

Firmware version(s) tested

No Information Submitted

UL 1741 SB certificate date

[8/12/2025]

UL 1741 SB certifying entity

CSA Group

Certified JA12 control strategies

Basic, TOU, Advance DR

Maximum continuous discharge rate (kW)

10

Manufacturer-declared round-trip efficiency (%)

90.5

Use the source row references above to inspect the conditions for each other configuration.

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 CECaPower Syyy {240V, 9.6 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {240V, 7.6 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {240V, 5 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {240V, 11.5kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {240V, 10kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {208V, 9.6 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {208V, 7.6 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {208V, 5 kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {208V, 11.5kW}
  Archived CEC source
• Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECaPower Syyy {208V, 10kW}
  Archived CEC source