Cali-Graf in Southern California

For pros Sign in

Illustration

Battery inverterStar Charge Americas

Star Charge Americas SI135TULT00

Battery inverter, ac-coupled battery inverter. 2 models, 125 kW–135 kW AC at 480 V.

UL 1741 SBCEC listed · Feb 3, 2025

Model

Rated AC power135 kW
CEC weighted efficiency98.5%

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
SI125TULT00	125 kW	480 V	124.4 kW	124.4 kW	99.0%	750–1,000 V	Feb 3, 2025	SB
SI135TULT00	135 kW	480 V	133.1 kW	133.1 kW	98.5%	810–1,050 V	Feb 3, 2025	SB

Efficiency

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

CEC weighted efficiency98.5%
Night-time standby (tare)1.78 W
Power to start converting125.1 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 Nov 15, 2024
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 Feb 3, 2025)
CEC listedFeb 3, 2025

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

Compare with similar 135 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
Star Charge Americas SIxxxTULT00	125 kW–135 kW	98.5%	810–1,050 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.

About Star Charge Americas

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerStar Charge Americas
Listed in CEC asStar Charge Americas Corp.
Models on CEC lists137

Other series

SIxxxTULT10

Questions & answers

How efficient is the Star Charge Americas SIxxxTULT00?

The California Energy Commission lists a weighted efficiency of 98.5–99.0% for Star Charge Americas SIxxxTULT00 models, measured at six power levels and three DC voltages.

What sizes does the Star Charge Americas SIxxxTULT00 come in?

The CEC list includes 2 models from 125 kW to 135 kW AC: SI125TULT00, SI135TULT00.

Is the Star Charge Americas SIxxxTULT00 certified to UL 1741 SB?

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

Can the Star Charge Americas SIxxxTULT00 be used with a battery?

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

What is the SI135TULT00’s DC input voltage range?

CEC tested it at 810–1,050 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.