GoodWe GW11K4-SBP-US20

Battery inverter, ac-coupled battery inverter. 1 model, 11.4 kW AC at 240 V.

UL 1741 SBCEC listed · Jan 23, 2023

Rated AC power11.4 kW
CEC weighted efficiency96.0%

AC output (grid side)

CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power11.4 kW
CEC-measured continuous output11.4 kW
Grid voltage240 V
Phasesplit-phase 120/240 V

Efficiency

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

CEC weighted efficiency96.0%
Night-time standby (tare)5.61 W
Power to start converting39.3 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 Jul 19, 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 Jan 23, 2023)
Power control system (PCS)Stated in CEC listing (power control system)
CEC listedJan 23, 2023

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

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 GWxxK4-SBP-US20	11.4 kW–11.4 kW	96.0%	235–495 V	Yes	2023	0
GoodWe GWxxxxA-BP	5 kW–9.6 kW	96.5%	200–495 V	Yes	2021	1
FOXESS AIO-AC1-x.x-US	3.8 kW–11.4 kW	97.0%	85–500 V	Yes	2025	—
APsystems (Altenergy Power System) ELS	6.61 kW–11.4 kW	94.0%	51–60 V	Yes	2024	—
Hoymiles HAS-x.xLV-USG1	3.8 kW–11.5 kW	94.0%	50–60 V	Yes	2024	—

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

GWxxxxA-BP · 1 permitsGECx.x-1U-US20GWxxxx-SBP-US20GECx.x-1U-US10GECx.x-1U-USx.x

Questions & answers

How efficient is the GoodWe GWxxK4-SBP-US20?

The California Energy Commission lists a weighted efficiency of 96.0% for GoodWe GWxxK4-SBP-US20 models, measured at six power levels and three DC voltages.

Is the GoodWe GWxxK4-SBP-US20 certified to UL 1741 SB?

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

Can the GoodWe GWxxK4-SBP-US20 be used with a battery?

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

What is the GW11K4-SBP-US20’s DC input voltage range?

CEC tested it at 235–495 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.