Illustration

String inverterSolis (Ginlong Technologies)

Solis (Ginlong Technologies) S5-GC90K-US

Name: Solis (Ginlong Technologies) S5-GC90K-US
Brand: Solis (Ginlong Technologies)

String inverter. 5 models, 75 kW–125 kW AC at 480 V.

UL 1741 SBCEC listed · Dec 12, 2022

Model

Rated AC power90 kW
CEC weighted efficiency98.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 5 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
S5-GC75K-US	75 kW	480 V	74.6 kW	74.6 kW	98.5%	550–850 V	Dec 12, 2022	SB
S5-GC80K-US	85 kW	480 V	79.4 kW	79.4 kW	98.5%	550–850 V	Dec 12, 2022	SB
S5-GC90K-US	90 kW	480 V	89.4 kW	89.4 kW	98.0%	550–850 V	Dec 12, 2022	SB
S5-GC100K-US	100 kW	480 V	99.4 kW	99.4 kW	98.0%	550–850 V	Dec 12, 2022	SB
S5-GC125K-US	125 kW	480 V	125 kW	125 kW	98.0%	550–850 V	Dec 23, 2024	SB

DC input (PV side)

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

CEC test DC voltages (min / nom / max)550 / 730 / 850 V
DC input at rated output (CEC test)91.3 kW

Efficiency

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

CEC weighted efficiency98.0%
Night-time standby (tare)2 W
Power to start converting83.3 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 Oct 17, 2024
UL 1741 SA (SA8–SA13)Yes — CSA Group
Firmware tested (SA)1C
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 Dec 23, 2024)
CEC listedDec 12, 2022
Last CEC updateMay 11, 2023

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

Panel compatibility & string sizing

NLR SAM inverter library · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

S5-GC90K-US: max DC 850 V · MPPT 550–850 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	no fit	—
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 90 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
Solis (Ginlong Technologies) S5-GCxxK-US	75 kW–125 kW	98.0%	550–850 V	Yes	2024	0
SolarEdge SExKUS	9 kW–330 kW	99.0%	100–1,400 V	16 of 19	2025	14
Solis (Ginlong Technologies) Solis-xxK-5G-US	75 kW–100 kW	98.5%	550–850 V	No	2020	3
Yaskawa Solectria Solar PVI xxTL-480	36 kW–100 kW	98.5%	340–850 V	3 of 4	2025	—
CPS (Chint Power Systems) SCAxxxK-T-US-480	100 kW–100 kW	98.0%	340–850 V	Yes	2025	—

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

Approved in other markets

Clean Energy Council (Australia)

Model	Approved	Expires	Standards
S5-GC100K-AU	Jan 8, 2024	Jan 8, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
S5-GC125K-HV-AU	Jan 8, 2024	Jan 8, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020

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-M16S6-GCxxK-USSolis-xxxK-EHV-5G-US-PLUSSolis-xxxK-EHV-5G-USSolis-xxK-US-F-LSWSolis-xxK-US-LSWSolis-xxxK1-EHV-5G

Questions & answers

How efficient is the Solis (Ginlong Technologies) S5-GCxxK-US?

The California Energy Commission lists a weighted efficiency of 98.0–98.5% for Solis (Ginlong Technologies) S5-GCxxK-US models, measured at six power levels and three DC voltages.

What sizes does the Solis (Ginlong Technologies) S5-GCxxK-US come in?

The CEC list includes 5 models from 75 kW to 125 kW AC: S5-GC75K-US, S5-GC80K-US, S5-GC90K-US, S5-GC100K-US, S5-GC125K-US.

Is the Solis (Ginlong Technologies) S5-GCxxK-US certified to UL 1741 SB?

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

What is the S5-GC90K-US’s DC input voltage range?

CEC tested it at 550–850 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) — System Advisor Model CEC inverter library (version 2026.7.3).
Clean Energy Council (Australia) — approved inverter list (as of Oct 8, 2026).
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).