Cali-Graf in Southern California

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Hybrid inverterFOXESS

FOXESS H3-150-Plus-US-H

Hybrid inverter, dc-coupled hybrid (pv + battery). 1 model, 150 kW AC at 480 V.

UL 1741 SBCEC listed · Sep 1, 2026

Rated AC power150 kW
CEC weighted efficiency97.5%

DC input (PV side)

CEC Grid Support Inverter List (Oct 7, 2026)

CEC test DC voltages (min / nom / max)540 / 700 / 850 V

AC output (grid side)

CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power150 kW
CEC-measured continuous output149.2 kW
Grid voltage480 V
Phase3-phase 480 V

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026)

CEC weighted efficiency97.5%
Night-time standby (tare)26.4 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 Jun 16, 2026
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*)
Anti-islanding method groupsGroups 1, 2a, 2b, 2c, 4, 5 (manufacturer-reported)
CEC listedSep 1, 2026

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

Panel compatibility & string sizing

CEC Grid Support Inverter List (Oct 7, 2026) · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

H3-150-Plus-US-H: max DC 850 V · MPPT 540–850 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	no fit	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	no fit	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	no fit	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	no fit	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	20–20	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	20–20	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	20–20	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	20–20	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	12–12	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	no fit	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	20–20	—
Tesla TSP-420	420 W	43.4 V	27.7 V	no fit	—

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 150 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
FOXESS H3-xxx-Plus-US-H	150 kW–150 kW	97.5%	540–850 V	Yes	2026	0
Solis (Ginlong Technologies) S6-EH3PxxxK10-NV-YD-H-US	100 kW–150 kW	97.5%	550–900 V	Yes	2026	—

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

H1-x.x-US · 1 permitsH3-xx-Plus-US-LAIO-H1-x.x-US

Questions & answers

How efficient is the FOXESS H3-xxx-Plus-US-H?

The California Energy Commission lists a weighted efficiency of 97.5% for FOXESS H3-xxx-Plus-US-H models, measured at six power levels and three DC voltages.

Is the FOXESS H3-xxx-Plus-US-H certified to UL 1741 SB?

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

Can the FOXESS H3-xxx-Plus-US-H be used with a battery?

The CEC lists it as a dc-coupled hybrid (pv + battery).

What is the H3-150-Plus-US-H’s DC input voltage range?

CEC tested it at 540–850 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) — 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).