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
FOXESS AC1-x.x-US
3.8 kW–11.4 kW
96.5%
190–460 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 FOXESS
CEC Grid Support Inverter List (Oct 7, 2026)
ManufacturerFOXESS
Listed in CEC asFOXESS CO., LTD.
Websitefox-ess.com
Models on CEC lists117
Other series
AIO-AC1-x.x-US
Questions & answers
How efficient is the FOXESS AC1-x.x-US?
The California Energy Commission lists a weighted efficiency of 95.5–97.0% for FOXESS AC1-x.x-US models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 97.6%.
What sizes does the FOXESS AC1-x.x-US come in?
The CEC list includes 5 models from 3.8 kW to 11.4 kW AC: AC1-3.8-US, AC1-5.7-US, AC1-7.6-US, AC1-9.6-US, AC1-11.4-US.
Is the FOXESS AC1-x.x-US certified to UL 1741 SB?
Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.
Can the FOXESS AC1-x.x-US be used with a battery?
The CEC lists it as a ac-coupled battery inverter.
What is the AC1-7.6-US’s DC input voltage range?
Max DC input voltage is 600 V per the datasheet. CEC tested it at 190–460 V DC.
What warranty does it have?
10 years standard (manufacturer datasheet).
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.
