SMA STP 62-US-80

Name: SMA STP 62-US-80
Brand: SMA

String inverter. 4 models, 27.5 kW–70 kW AC at 208 V / 480 V.

UL 1741 SBCEC listed · Aug 21, 2026

Model

Rated AC power62.5 kW
CEC weighted efficiency97.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · 4 models

Model	Nominal AC	Grid voltage	CEC continuous	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
STP 27-US-80	27.5 kW	208 V	26.8 kW	97.0%	300–800 V	Aug 21, 2026	SB
STP 50-US-80	50 kW	480 V	50 kW	97.5%	500–850 V	Aug 21, 2026	SB
STP 62-US-80	62.5 kW	480 V	62.5 kW	97.5%	500–850 V	Aug 21, 2026	SB
STP 70-US-80	70 kW	480 V	70 kW	97.5%	500–850 V	Aug 21, 2026	SB

DC input (PV side)

CEC Grid Support Inverter List (Oct 7, 2026)

CEC test DC voltages (min / nom / max)500 / 720 / 850 V

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026)

CEC weighted efficiency97.5%
Night-time standby (tare)23.71 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 — UL, certificate Jun 5, 2026
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*)
Anti-islanding method groupsGroups 1, 5 (manufacturer-reported)
CEC listedAug 21, 2026

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

Panel compatibility & string sizing

CEC Grid Support Inverter List (Oct 7, 2026) · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

STP 62-US-80: max DC 850 V · MPPT 500–850 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	17–17	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	17–17	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	20–21	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	20–21	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	19–20	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	18–20	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	18–20	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	18–20	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	11–12	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	20–21	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	18–20	—
Tesla TSP-420	420 W	43.4 V	27.7 V	19–19	—

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 62.5 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
SMA STP xx-US-80	27.5 kW–70 kW	97.5%	500–850 V	Yes	2026	0
SolarEdge SExKUS	9 kW–330 kW	99.0%	100–1,400 V	16 of 19	2025	14
CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480	36 kW–60 kW	98.5%	400–850 V	Yes	2023	3
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	—

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

About SMA

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerSMA
Listed in CEC asSMA America
Websitesma-america.com
Models on CEC lists202

Other series

SHP FLEX-US-21STP xx-US-50SHP xxx-US-21

Questions & answers

How efficient is the SMA STP xx-US-80?

The California Energy Commission lists a weighted efficiency of 97.0–97.5% for SMA STP xx-US-80 models, measured at six power levels and three DC voltages.

What sizes does the SMA STP xx-US-80 come in?

The CEC list includes 4 models from 27.5 kW to 70 kW AC: STP 27-US-80, STP 50-US-80, STP 62-US-80, STP 70-US-80.

Is the SMA STP xx-US-80 certified to UL 1741 SB?

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

What is the STP 62-US-80’s DC input voltage range?

CEC tested it at 500–850 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) — 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).