Cali-Graf in Southern California

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46.1 × 30.3 × 15.1 in

String inverterSolis (Ginlong Technologies)

Solis (Ginlong Technologies) Solis-255K-EHV-5G-US-PLUS

String inverter. 2 models, 185 kW–255 kW AC at 600 V / 800 V.

UL 1741 SBCEC listed · Jan 11, 2022

Model

Rated AC power255 kW
CEC weighted efficiency98.0%
Max DC input1,500 V

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
Solis-185K-EHV-5G-US-PLUS	185 kW	600 V	173 kW	173 kW	98.0%	860–1,300 V	Jan 11, 2022	SB
Solis-255K-EHV-5G-US-PLUS	255 kW	800 V	238.7 kW	238.7 kW	98.0%	860–1,300 V	Jan 11, 2022	SB

DC input (PV side)

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

Max DC input voltage1,500 V
MPPT operating range480–1,500 V
CEC test DC voltages (min / nom / max)860 / 1,180 / 1,300 V
Start-up voltage500 V
Max input current26 A
Max short-circuit current40 A
DC input at rated output (CEC test)242.9 kW

AC output (grid side)

Solis (Ginlong Technologies) datasheet · CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power255 kW
Max apparent power255,000 VA
CEC-measured continuous output238.7 kW
Grid voltage600 V / 800 V
Phase3-phase 600 V, 3-phase 800 V
Frequency60 Hz
Max continuous output current184 A

Efficiency

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

CEC weighted efficiency98.0%datasheet: 98.5%
Peak efficiency99.0%
Night-time standby (tare)2 W
Power to start converting374.5 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) · Solis (Ginlong Technologies) datasheet

UL 1741 SB (3rd ed.)Yes — CSA Group, certificate Aug 15, 2022
UL 1741 SA (SA8–SA13)Yes — CSA Group
Firmware tested (SA)V17
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Jan 11, 2022)
CEC listedJan 11, 2022
Last CEC updateJan 23, 2023
Standards listed on the datasheetUL 1741 SA, UL 1741, IEEE 1547, UL 1699B, UL 1998, CSA C22.2, FCC Part 15, CA Rule 21

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

Safety & protection

Solis (Ginlong Technologies) datasheet

Arc-fault protection (UL 1699B)Yes — UL 1699B

Monitoring & communication

Solis (Ginlong Technologies) datasheet

InterfacesPLC, RS485, CAN

Size, weight & environment

Solis (Ginlong Technologies) datasheet

Dimensions (W × H × D)46.1 × 30.3 × 15.1 in
Weight249.1 lb (113 kg)
Enclosure ratingNEMA Type 4X
CoolingFan-cooled
Operating temperature−25 to +60 °C

Panel compatibility & string sizing

Solis (Ginlong Technologies) datasheet · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

Solis-255K-EHV-5G-US-PLUS: max DC 1,500 V · MPPT 480–1,500 V (datasheet)

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	16–31	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	16–31	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	19–38	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	19–38	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	18–36	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	18–36	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	18–36	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	18–36	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	11–21	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	19–38	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	18–36	—
Tesla TSP-420	420 W	43.4 V	27.7 V	18–34	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

About Solis (Ginlong Technologies)

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerSolis (Ginlong Technologies)
Listed in CEC asGinlong Technologies Co., Ltd.
Websitesolisinverters.com
Models on CEC lists145

Other series

Solis-xxK-5G-US · 3 permitsS5-GC60K-LV-USS6-GC30K-LV-USS6-GUxxxK-EHV-US-M12S6-GUxxxK-EHV-US-M16S5-GCxxK-USS6-GCxxK-USSolis-xxxK-EHV-5G-USSolis-xxK-US-F-LSWSolis-xxK-US-LSWSolis-xxxK1-EHV-5G

Questions & answers

How efficient is the Solis (Ginlong Technologies) Solis-xxxK-EHV-5G-US-PLUS?

The California Energy Commission lists a weighted efficiency of 98.0% for Solis (Ginlong Technologies) Solis-xxxK-EHV-5G-US-PLUS models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 99.0%.

What sizes does the Solis (Ginlong Technologies) Solis-xxxK-EHV-5G-US-PLUS come in?

The CEC list includes 2 models from 185 kW to 255 kW AC: Solis-185K-EHV-5G-US-PLUS, Solis-255K-EHV-5G-US-PLUS.

Is the Solis (Ginlong Technologies) Solis-xxxK-EHV-5G-US-PLUS certified to UL 1741 SB?

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

What is the Solis-255K-EHV-5G-US-PLUS’s DC input voltage range?

Max DC input voltage is 1,500 V per the datasheet. MPPT operating range 480–1,500 V. CEC tested it at 860–1,300 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.
Solis (Ginlong Technologies) — manufacturer datasheet “Solis-(185-255)K-EHV-5G-US Solis Three Phase US Inverters”.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
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).
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).