Cali-Graf in Southern California

For pros Sign in

Illustration

Hybrid inverterGrowatt

Growatt SPH 10000TL-HU-US(B)

Hybrid inverter, dc-coupled hybrid (pv + battery). 4 models, 8 kW–10 kW AC at 208 V / 240 V.

UL 1741 SBCEC listed · Dec 23, 2024

Model

Rated AC power10 kW
CEC weighted efficiency96.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 4 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
SPH 8000TL-HU-US(B)	8 kW	208 V	7.91 kW	7.91 kW	96.0%	160–450 V	Feb 21, 2025	SB
SPH 8000TL-HU-US(B)	8 kW	240 V	7.93 kW	7.93 kW	96.0%	160–450 V	Feb 21, 2025	SB
SPH 10000TL-HU-US(B)	10 kW	208 V	9.77 kW	9.77 kW	96.5%	165–450 V	Dec 23, 2024	SB
SPH 10000TL-HU-US(B)	10 kW	240 V	9.93 kW	9.93 kW	96.0%	165–450 V	Dec 23, 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)165 / 370 / 450 V
DC input at rated output (CEC test)10.3 kW

Efficiency

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

CEC weighted efficiency96.0%
Power to start converting22.4 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 — Intertek, certificate Dec 16, 2024
UL 1741 SA (SA8–SA13)Yes — Intertek
Firmware tested (SA)Skaa-00
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)No
Power control system (PCS)Stated in CEC listing (power control system)
CEC listedDec 23, 2024
Last CEC updateAug 11, 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

SPH 10000TL-HU-US(B): max DC 450 V · MPPT 165–450 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	7–11	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	7–11	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	7–10	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	6–10	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	6–10	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	6–10	—
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	7–11	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	6–10	—
Tesla TSP-420	420 W	43.4 V	27.7 V	6–10	—

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

Compare with similar 10 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-HU-US(B)	8 kW–10 kW	96.0%	165–450 V	Yes	2025	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
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

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

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 10000TL-HU-USWIT xxK-H-USWIT xxK-H-US L2WIT xxK-HU-USWIT xxK-HU-US L2SPH xxxxTL BL-US

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-HU-US(B)?

The California Energy Commission lists a weighted efficiency of 96.0–96.5% for Growatt SPH xxxxTL-HU-US(B) models, measured at six power levels and three DC voltages.

What sizes does the Growatt SPH xxxxTL-HU-US(B) come in?

The CEC list includes 4 models from 8 kW to 10 kW AC: SPH 8000TL-HU-US(B), SPH 8000TL-HU-US(B), SPH 10000TL-HU-US(B), SPH 10000TL-HU-US(B).

Is the Growatt SPH xxxxTL-HU-US(B) certified to UL 1741 SB?

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

Can the Growatt SPH xxxxTL-HU-US(B) be used with a battery?

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

What is the SPH 10000TL-HU-US(B)’s DC input voltage range?

CEC tested it at 165–450 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).
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).