Illustration

Hybrid inverterHuizhou Roypow Technology

Huizhou Roypow Technology SUN12000S-U

Name: Huizhou Roypow Technology SUN12000S-U
Brand: Huizhou Roypow Technology

Hybrid inverter, dc-coupled hybrid (pv + battery). 3 models, 10.1 kW–15 kW AC at 240 V.

UL 1741 SBCEC listed · Aug 1, 2024

Model

Rated AC power12.1 kW
CEC weighted efficiency95.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 3 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
SUN10000S-U	10.1 kW	240 V	10.1 kW	10.1 kW	95.5%	200–440 V	Aug 1, 2024	SB
SUN12000S-U	12.1 kW	240 V	12.1 kW	12.1 kW	95.5%	200–440 V	Aug 1, 2024	SB
SUN15000S-U	15 kW	240 V	15 kW	15 kW	95.5%	200–440 V	Aug 1, 2024	SB

Some models are also on the CEC Battery Inverter list — one product, two listings.

DC input (PV side)

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

CEC test DC voltages (min / nom / max)200 / 300 / 440 V
DC input at rated output (CEC test)12.7 kW

Efficiency

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

CEC weighted efficiency95.5%
Night-time standby (tare)36.44 W
Power to start converting97.5 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)

UL 1741 SB (3rd ed.)Yes — CSA Group, certificate Jan 25, 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 Jan 2, 2025)
CEC listedAug 1, 2024
Last CEC updateJan 2, 2025

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

SUN12000S-U: max DC 440 V · MPPT 200–440 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	7–9	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	7–9	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	8–11	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	8–11	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	8–10	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	8–10	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	8–10	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	8–10	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	5–6	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	8–11	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	8–10	—
Tesla TSP-420	420 W	43.4 V	27.7 V	8–10	—

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

Battery & storage pairings

CEC Energy Storage System List

CEC-certified storage systems that include it

System	Energy	Power	Chemistry	CEC listed
Huizhou Roypow Technology Co., Ltd SUN10000S-U/A {10.24kWh}	10.2 kWh	10 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN12000S-U/A {10.24kWh}	10.2 kWh	12 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN15000S-U/A {10.24kWh}	10.2 kWh	15 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN10000S-U/A {15.36kWh}	15.4 kWh	10 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN12000S-U/A {15.36kWh}	15.4 kWh	12 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN15000S-U/A {15.36kWh}	15.4 kWh	15 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN10000S-U/A {20.48kWh}	20.5 kWh	10 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN12000S-U/A {20.48kWh}	20.5 kWh	12 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN15000S-U/A {20.48kWh}	20.5 kWh	15 kW	Lithium Iron Phosphate	Dec 11, 2024
Huizhou Roypow Technology Co., Ltd SUN10000S-U/A {25.6kWh}	25.6 kWh	10 kW	Lithium Iron Phosphate	Dec 11, 2024

and 11 more on the CEC Energy Storage System List

Compare with similar 12.1 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
Huizhou Roypow Technology SUNxxxxxS-U	10.1 kW–15 kW	95.5%	200–440 V	Yes	2024	0
SolarEdge SExxxxH-US	3 kW–11.4 kW	99.0%	360–480 V	Yes	2025	1,046
SolarEdge SExxxxxA-US	3.8 kW–11.4 kW	98.0%	320–500 V	No	2024	18
Growatt MIN xxxxTL-XH-US	2.63 kW–11.4 kW	98.0%	125–480 V	Yes	2021	15
EG4 Electronics 18KPV-12LV	10.4 kW–12 kW	97.0%	230–480 V	Yes	2023	7

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

Questions & answers

How efficient is the Huizhou Roypow Technology SUNxxxxxS-U?

The California Energy Commission lists a weighted efficiency of 95.5% for Huizhou Roypow Technology SUNxxxxxS-U models, measured at six power levels and three DC voltages.

What sizes does the Huizhou Roypow Technology SUNxxxxxS-U come in?

The CEC list includes 3 models from 10.1 kW to 15 kW AC: SUN10000S-U, SUN12000S-U, SUN15000S-U.

Is the Huizhou Roypow Technology SUNxxxxxS-U certified to UL 1741 SB?

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

Can the Huizhou Roypow Technology SUNxxxxxS-U be used with a battery?

The CEC lists it as a dc-coupled hybrid (pv + battery). CEC-certified storage systems that include it: Huizhou Roypow Technology Co., Ltd SUN10000S-U/A {10.24kWh}, Huizhou Roypow Technology Co., Ltd SUN12000S-U/A {10.24kWh}, Huizhou Roypow Technology Co., Ltd SUN15000S-U/A {10.24kWh}.

What is the SUN12000S-U’s DC input voltage range?

CEC tested it at 200–440 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.
California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
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).
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).