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Battery inverterSungrow

Sungrow SC430HX-US

Battery inverter, ac-coupled battery inverter. 4 models, 127 kW–450 kW AC at 690 V.

UL 1741 SBCEC listed · Oct 21, 2024

Model

Rated AC power430 kW
CEC weighted efficiency99.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 4 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
SC125HX-US	127 kW	690 V	127.4 kW	127.4 kW	98.5%	1,000–1,500 V	Nov 21, 2025	SB
SC210HX-US	210 kW	690 V	212.1 kW	212.1 kW	98.5%	1,000–1,500 V	Oct 21, 2024	SB
SC430HX-US	430 kW	690 V	430.6 kW	—	99.0%	1,100–1,500 V	Oct 1, 2026	SB
SC450HX-US	450 kW	690 V	452.5 kW	—	99.0%	1,100–1,500 V	Oct 1, 2026	SB

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026)

CEC weighted efficiency99.0%
Night-time standby (tare)74.71 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 — CSA Group, certificate Jan 27, 2026
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) conformanceVia gateway during testing (Y*) (3 of 4 models)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Oct 21, 2024)
Anti-islanding method groupsGroups 1, 5 (manufacturer-reported)
CEC listedOct 21, 2024

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

Compare with similar 430 kW inverters

CEC Grid Support Inverter List (Oct 7, 2026) · building permits

Inverter	Power	CEC weighted eff.	DC test window	UL 1741 SB	Latest CEC	SoCal permits
Sungrow SCxxxHX-US	127 kW–450 kW	99.0%	1,100–1,500 V	Yes	2026	0
EPC Power 50-100100	450 kW–1,500 kW	98.0%	400–1,250 V	Yes	2021	—

Same type and grid voltage, power range covering this model; same fields from the same sources.

About Sungrow

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerSungrow
Listed in CEC asSungrow Power Supply Co., Ltd.
Models on CEC lists43

Other series

SCxxxCX-US

Questions & answers

How efficient is the Sungrow SCxxxHX-US?

The California Energy Commission lists a weighted efficiency of 98.5–99.0% for Sungrow SCxxxHX-US models, measured at six power levels and three DC voltages.

What sizes does the Sungrow SCxxxHX-US come in?

The CEC list includes 4 models from 127 kW to 450 kW AC: SC125HX-US, SC210HX-US, SC430HX-US, SC450HX-US.

Is the Sungrow SCxxxHX-US certified to UL 1741 SB?

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

Can the Sungrow SCxxxHX-US be used with a battery?

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

What is the SC430HX-US’s DC input voltage range?

CEC tested it at 1,100–1,500 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).
Building permits — Southern California permit portals. Equipment matched from permit descriptions.