GoodWe GW11K4-MS-US30

Name: GoodWe GW11K4-MS-US30
Brand: GoodWe

String inverter. 2 models, 9.88 kW–11.4 kW AC at 208 V / 240 V.

UL 1741 SBCEC listed · Dec 21, 2022

Model

Rated AC power11.4 kW
CEC weighted efficiency97.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 2 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
GW11K4-MS-US30	9.88 kW	208 V	9.88 kW	9.88 kW	96.5%	217–500 V	Dec 21, 2022	SB
GW11K4-MS-US30	11.4 kW	240 V	11.4 kW	11.4 kW	97.0%	250–500 V	Dec 21, 2022	SB

DC input (PV side)

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

CEC test DC voltages (min / nom / max)250 / 380 / 500 V
DC input at rated output (CEC test)11.8 kW

Efficiency

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

CEC weighted efficiency97.0%
Night-time standby (tare)4.5 W
Power to start converting50.5 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 — SGS, certificate Oct 28, 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) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Dec 21, 2022)
CEC listedDec 21, 2022

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

Panel compatibility & string sizing

NLR SAM inverter library · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

GW11K4-MS-US30: max DC 500 V · MPPT 250–500 V (CEC test window)

Most-permitted panels in Southern California

Panel	Power	Voc cold	Vmp hot	Panels per string	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 V	30.6 V	9–10	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	9–10	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	10–12	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	10–12	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	10–12	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	9–12	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	9–12	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	9–12	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	6–7	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	10–12	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	9–12	—
Tesla TSP-420	420 W	43.4 V	27.7 V	10–11	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

Compare with similar 11.4 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
GoodWe GW11K4-MS-US30	9.88 kW–11.4 kW	97.0%	250–500 V	Yes	2022	0
GoodWe GEPx.x-1-US30	4.33 kW–11.4 kW	97.0%	143–500 V	Yes	2022	—
GoodWe GWxxxx-MS-US30	4.33 kW–9.6 kW	97.0%	143–500 V	Yes	2022	—
GoodWe GWxxxxA-MS	5 kW–9.6 kW	97.5%	210–480 V	Yes	2021	—
Fronius Fronius Symo Advanced xx.x-3 208-240 Lite	10 kW–12 kW	96.5%	300–480 V	No	2020	—

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

About GoodWe

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerGoodWe
Listed in CEC asGoodWe Technologies Co., Ltd.
Websitegoodwe.com
Models on CEC lists715

Other series

GWxxKLV-SMT-USGEPx.x-1-US30GWxxK-SMT-USGWxxxx-MS-US30GWxxxxA-MS

Questions & answers

How efficient is the GoodWe GW11K4-MS-US30?

The California Energy Commission lists a weighted efficiency of 96.5–97.0% for GoodWe GW11K4-MS-US30 models, measured at six power levels and three DC voltages.

What sizes does the GoodWe GW11K4-MS-US30 come in?

The CEC list includes 2 models from 9.88 kW to 11.4 kW AC: GW11K4-MS-US30, GW11K4-MS-US30.

Is the GoodWe GW11K4-MS-US30 certified to UL 1741 SB?

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

What is the GW11K4-MS-US30’s DC input voltage range?

CEC tested it at 250–500 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).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
California Energy Commission — PV Module List (module electrical data for the compatibility check).
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).