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Battery inverterShenzhen Cubenergy

Shenzhen Cubenergy CBAC-140-HA-M-US

Battery inverter, ac-coupled battery inverter. 1 model, 140 kW AC at 480 V.

UL 1741 SBCEC listed · May 1, 2025

Rated AC power140 kW
CEC weighted efficiency97.5%

AC output (grid side)

CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power140 kW
CEC-measured continuous output140 kW
Grid voltage480 V
Phase3-phase 480 V

Efficiency

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

CEC weighted efficiency97.5%
Night-time standby (tare)316 W
Power to start converting462.6 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 — TUV Rheinland of North America, certificate Feb 28, 2025
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 listedMay 1, 2025
CEC noteEfficiency data inclusive of transformer effect based on the 225 kVA liquid-immersed transformer DOE tables.

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

Compare with similar 140 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
Shenzhen Cubenergy CBAC-xxx-HA-M-US	140 kW–140 kW	97.5%	800–1,000 V	Yes	2025	0
Kehua BCSxxK-B-HM-US X2	75 kW–175 kW	98.5%	720–1,450 V	Yes	2024	—
CPS (Chint Power Systems) CPS ECBxx.xKTL-M/US-480	62.5 kW–125 kW	97.5%	750–1,100 V	Yes	2020	—

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

Questions & answers

How efficient is the Shenzhen Cubenergy CBAC-xxx-HA-M-US?

The California Energy Commission lists a weighted efficiency of 97.5% for Shenzhen Cubenergy CBAC-xxx-HA-M-US models, measured at six power levels and three DC voltages.

Is the Shenzhen Cubenergy CBAC-xxx-HA-M-US certified to UL 1741 SB?

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

Can the Shenzhen Cubenergy CBAC-xxx-HA-M-US be used with a battery?

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

What is the CBAC-140-HA-M-US’s DC input voltage range?

CEC tested it at 800–1,000 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.