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Battery inverterSinexcel

Sinexcel PWS1-500KTL-NA-8M8

Battery inverter, ac-coupled battery inverter. 1 model, 500 kW AC at 400 V.

UL 1741 SBCEC listed · Sep 11, 2024

Rated AC power500 kW
CEC weighted efficiency96.0%

AC output (grid side)

CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power500 kW
CEC-measured continuous output498.8 kW
Grid voltage400 V
Phase3-phase 400 V

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC weighted efficiency96.0%
Night-time standby (tare)289.8 W
Power to start converting3,241 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026)

UL 1741 SB (3rd ed.)Yes — Intertek, certificate Sep 22, 2022
UL 1741 SA (SA8–SA13)No
Volt-VAr with reactive power priority (SA13)No
Freq-Watt / Volt-Watt (SA14–15)No
Disable permit service / limit active power (SA17–18)No
CSIP (IEEE 2030.5) conformanceNo
Monitor key data & scheduling (Rule 21 Phase 3)No
CEC listedSep 11, 2024
CEC noteWeighted Efficiency data includes the 500 kW Powerel Enterprise Co., Ltd. transformer,

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

About Sinexcel

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerSinexcel
Listed in CEC asShenzhen Sinexcel Electric Co., Ltd.
Models on CEC lists161

Other series

PWS1-xxxKTL-NA-8M1PWS2-xxP-NA

Questions & answers

How efficient is the Sinexcel PWS1-xxxKTL-NA-8M8?

The California Energy Commission lists a weighted efficiency of 96.0% for Sinexcel PWS1-xxxKTL-NA-8M8 models, measured at six power levels and three DC voltages.

Is the Sinexcel PWS1-xxxKTL-NA-8M8 certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

Can the Sinexcel PWS1-xxxKTL-NA-8M8 be used with a battery?

The CEC lists it as a ac-coupled battery inverter.

What is the PWS1-500KTL-NA-8M8’s DC input voltage range?

CEC tested it at 640–900 V DC.

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).