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MicroinverterLG Electronics

LG Electronics LG365M1K-A6

Microinverter. 8 models, 355 W–370 W AC at 208 V / 240 V.

CEC listed · May 11, 2021

Model

Rated AC power365 W
CEC weighted efficiency97.0%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 8 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
LG355M1K-A6	355 W	208 V	322 W	322 W	96.5%	32–42 V	May 11, 2021	—
LG355M1K-A6	355 W	240 V	321 W	321 W	97.0%	32–42 V	May 11, 2021	—
LG360M1K-A6	360 W	208 V	322 W	322 W	96.5%	32–42 V	May 11, 2021	—
LG360M1K-A6	360 W	240 V	321 W	321 W	97.0%	32–42 V	May 11, 2021	—
LG365M1K-A6	365 W	208 V	322 W	322 W	96.5%	32–42 V	May 11, 2021	—
LG365M1K-A6	365 W	240 V	321 W	321 W	97.0%	32–42 V	May 11, 2021	—
LG370M1K-A6	370 W	208 V	322 W	322 W	96.5%	32–42 V	May 11, 2021	—
LG370M1K-A6	370 W	240 V	321 W	321 W	97.0%	32–42 V	May 11, 2021	—

4 more listings are microinverters sold only inside AC modules — not shown here.

DC input (PV side)

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

CEC test DC voltages (min / nom / max)32 / 35 / 42 V
DC input at rated output (CEC test)332 W

Efficiency

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

CEC weighted efficiency97.0%
Night-time standby (tare)0.15 W
Power to start converting2.3 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 — UL
Firmware tested (SA)A320UD3005
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
CEC noteThis model is specifically for the ACPV module. The microinverter is also sold as an individual unit.

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

LG365M1K-A6: max DC 42 V · MPPT 32–42 V (CEC test window)

Most-permitted panels in Southern California

Panel	Power	Voc cold / Vmp hot	Check	DC/AC	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 / 30.6 V	✗ Cold Voc above max input	1.28	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 / 30.6 V	✗ Cold Voc above max input	1.28	—
LONGi LR5-54HABB-400M	400 W	39.3 / 25.3 V	⚠ Below MPPT at peak heat	1.25	—
JA Solar JAM54S31-405/MR	405 W	39.4 / 25.5 V	⚠ Below MPPT at peak heat	1.26	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 / 27 V	⚠ Below MPPT at peak heat	1.37	—
Silfab Solar SIL-440QD	440 W	41.1 / 28 V	⚠ Below MPPT at peak heat	1.37	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	1.34	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	1.34	—
REC Group REC460AA Pure-RX	460 W	68.8 / 47.1 V	✗ Cold Voc above max input	1.43	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 / 25.3 V	⚠ Below MPPT at peak heat	1.28	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	1.34	—
Tesla TSP-420	420 W	43.4 / 27.7 V	✗ Cold Voc above max input	1.31	—

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 365 W 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
LG Electronics LGxxxM1K-A6	355 W–370 W	97.0%	32–42 V	—	2021	0
Enphase Energy IQ8 Series	240 W–633 W	97.5%	25–95 V	44 of 45	2025	1,104
Enphase Energy IQ7 Series	190 W–384 W	97.5%	22–64 V	114 of 119	2022	471
Hoymiles HM-xxxNT	295 W–1.44 kW	96.5%	29–48 V	11 of 12	2023	3
Enphase Energy IQ9 Series	405 W–440 W	97.5%	28–45 V	Yes	2026	—

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

About LG Electronics

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerLG Electronics
Listed in CEC asLG Electronics Inc.
Models on CEC lists735

Other series

LGxxxA1C-A6LGxxxM1C-A6LGxxxA1K-V5LGxxxM1C-N5LGxxxM1K-L5

Documents

manufacturer documents

PDF
Specification Sheet
Datasheet · LG (LG Electronics / LG Energy Solution) · May 2025
PDF
Specification Sheet
Datasheet · LG (LG Electronics / LG Energy Solution) · May 2025

Questions & answers

How efficient is the LG Electronics LGxxxM1K-A6?

The California Energy Commission lists a weighted efficiency of 96.5–97.0% for LG Electronics LGxxxM1K-A6 models, measured at six power levels and three DC voltages.

What sizes does the LG Electronics LGxxxM1K-A6 come in?

The CEC list includes 8 models from 355 W to 370 W AC: LG355M1K-A6, LG355M1K-A6, LG360M1K-A6, LG360M1K-A6, LG365M1K-A6, LG365M1K-A6, LG370M1K-A6, LG370M1K-A6.

Is the LG Electronics LGxxxM1K-A6 certified to UL 1741 SB?

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

What is the LG365M1K-A6’s DC input voltage range?

CEC tested it at 32–42 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.
LG Electronics — 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).