Cali-Graf in Southern California

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Hybrid inverterGrowatt

Growatt SPH 4600TL BL-US

Hybrid inverter, dc-coupled hybrid (pv + battery). 12 models, 2.93 kW–5.86 kW AC at 208 V / 240 V.

CEC listed · May 11, 2021

Model

Rated AC power4.6 kW
CEC weighted efficiency95.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 12 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
SPH 3000TL BL-US	2.93 kW	240 V	2.93 kW	2.93 kW	93.5%	150–480 V	May 11, 2021	—
SPH 3000TL BL-US	3 kW	208 V	3 kW	3 kW	93.5%	150–480 V	May 11, 2021	—
SPH 3600TL BL-US	3.58 kW	208 V	3.58 kW	3.58 kW	94.0%	150–480 V	May 11, 2021	—
SPH 3600TL BL-US	3.61 kW	240 V	3.61 kW	3.61 kW	94.0%	150–480 V	May 11, 2021	—
SPH 4000TL BL-US	3.99 kW	240 V	3.99 kW	3.99 kW	95.0%	180–480 V	May 11, 2021	—
SPH 4000TL BL-US	4 kW	208 V	4 kW	4 kW	95.0%	150–480 V	May 11, 2021	—
SPH 4600TL BL-US	4.6 kW	208 V	4.6 kW	4.6 kW	95.0%	180–480 V	May 11, 2021	—
SPH 4600TL BL-US	4.6 kW	240 V	4.6 kW	4.6 kW	95.0%	180–480 V	May 11, 2021	—
SPH 5000TL BL-US	4.95 kW	240 V	4.95 kW	4.95 kW	95.0%	230–480 V	May 11, 2021	—
SPH 5000TL BL-US	4.97 kW	208 V	4.97 kW	4.97 kW	95.5%	230–480 V	May 11, 2021	—
SPH 6000TL BL-US	5.23 kW	208 V	5.23 kW	5.23 kW	96.0%	230–480 V	May 11, 2021	—
SPH 6000TL BL-US	5.86 kW	240 V	5.86 kW	5.86 kW	96.0%	230–480 V	May 11, 2021	—

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)180 / 380 / 480 V
DC input at rated output (CEC test)4.79 kW

Efficiency

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

CEC weighted efficiency95.0%
Night-time standby (tare)15.13 W
Power to start converting70.7 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.)No
UL 1741 SA (SA8–SA13)Yes — Intertek
Firmware tested (SA)RA1.0
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 May 11, 2021)
CEC listedMay 11, 2021

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

SPH 4600TL BL-US: max DC 480 V · MPPT 180–480 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	6–9	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	6–9	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	8–12	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	8–12	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	7–11	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	7–11	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	7–11	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	7–11	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	4–6	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	8–12	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	7–11	—
Tesla TSP-420	420 W	43.4 V	27.7 V	7–11	—

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 4.6 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
Growatt SPH xxxxTL BL-US	2.93 kW–5.86 kW	95.0%	180–480 V	—	2021	0
SolarEdge SExxxxH-US	3 kW–11.4 kW	99.0%	360–480 V	Yes	2025	1,046
Delta Electronics Ex-TL-US	3.33 kW–9.6 kW	97.5%	200–480 V	Yes	2022	28
Qcells Q.VOLT Hx.xSX	3.8 kW–7.6 kW	97.5%	175–500 V	Yes	2023	25
SolarEdge SExxxxxA-US	3.8 kW–11.4 kW	98.0%	320–500 V	No	2024	18

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
SPH 3600TL-HU	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 3600TL-HUB	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 4000TL-HU	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 4000TL-HUB	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 4600TL-HU	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 4600TL-HUB	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 5000TL-HU	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 5000TL-HUB	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 6000TL-HU	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020
SPH 6000TL-HUB	Nov 27, 2024	Nov 27, 2027	IEC 62109.1;IEC 62109.2;AS/NZS 4777.2:2020

About Growatt

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerGrowatt
Listed in CEC asShenzhen Growatt New Energy Co., Ltd.
Websitegrowatt.com
Models on CEC lists539

Other series

MIN xxxxTL-XH-US · 15 permitsMIN xxxxTL-XH2 USSPH xxxxTL-HU-US(B)SPH 10000TL-HU-USWIT xxK-H-USWIT xxK-H-US L2WIT xxK-HU-USWIT xxK-HU-US L2

Documents

manufacturer documents

PDF
SPH 3000~6000TL BL-UP Datasheet
Datasheet · Growatt · Oct 2022
PDF
SPH 4000-10000TL3 BH UP Datasheet
Datasheet · Growatt · Oct 2022

Questions & answers

How efficient is the Growatt SPH xxxxTL BL-US?

The California Energy Commission lists a weighted efficiency of 93.5–96.0% for Growatt SPH xxxxTL BL-US models, measured at six power levels and three DC voltages.

What sizes does the Growatt SPH xxxxTL BL-US come in?

The CEC list includes 12 models from 2.93 kW to 5.86 kW AC: SPH 3000TL BL-US, SPH 3000TL BL-US, SPH 3600TL BL-US, SPH 3600TL BL-US, SPH 4000TL BL-US, SPH 4000TL BL-US, SPH 4600TL BL-US, SPH 4600TL BL-US….

Is the Growatt SPH xxxxTL BL-US certified to UL 1741 SB?

The CEC list does not show UL 1741 SB certification for these models.

Can the Growatt SPH xxxxTL BL-US be used with a battery?

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

What is the SPH 4600TL BL-US’s DC input voltage range?

CEC tested it at 180–480 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.
Growatt — document library on the manufacturer’s website (links above).
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).