The California Energy Commission lists a weighted efficiency of 96.0–97.0% for Growatt SPH 10000TL-HU-US models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 97.5%.
What sizes does the Growatt SPH 10000TL-HU-US come in?
The CEC list includes 2 models from 10 kW to 10 kW AC: SPH 10000TL-HU-US, SPH 10000TL-HU-US.
Is the Growatt SPH 10000TL-HU-US certified to UL 1741 SB?
Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.
Can the Growatt SPH 10000TL-HU-US be used with a battery?
The CEC lists it as a dc-coupled hybrid (pv + battery).
What is the SPH 10000TL-HU-US’s DC input voltage range?
Max DC input voltage is 525 V per the datasheet. MPPT operating range 150–450 V. CEC tested it at 165–450 V DC.
What warranty does it have?
5 years standard (manufacturer datasheet).
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).
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).
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