41″ · 1,042 mm wide · 1.57″ (40 mm) frame · 41 lb (18.6 kg)

Solar panelLG Electronics

LG Electronics LG375N1K-A6

Name: LG Electronics LG375N1K-A6
Brand: LG Electronics

60 cells, N-type. Power classes 345–380 W in the CEC list; datasheet covers 355–355 W.

CEC listed · Feb 1, 2021UL 6173025-yr product + 25-yr performance warrantyN-typeSeen in 2 SoCal permits

Power class

Power (STC)375 WCEC nameplate
Efficiency≈20.7%calculated from area
%/°C Pmax−0.35CEC test: −0.342
Degradation / yr0.33%after year 1 (warranty)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · LG Electronics datasheet · 8 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
LG345N1K-A6	345 W	41.40	10.76	33.50	10.32	≈19.0%	319 W	Feb 1, 2021
LG350N1K-A6	350 W	41.50	10.80	33.90	10.35	≈19.3%	324 W	Feb 1, 2021
LG355N1K-A6	355 W	41.60	10.84	34.30	10.37	≥19.6%	329 W	Feb 1, 2021
LG360N1K-A6	360 W	41.70	10.88	34.70	10.39	≈19.9%	333 W	Feb 1, 2021
LG365N1K-A6	365 W	41.80	10.92	35.10	10.41	≈20.1%	338 W	Feb 1, 2021
LG370N1K-A6	370 W	41.90	10.96	35.50	10.43	≈20.4%	343 W	Feb 1, 2021
LG375N1K-A6	375 W	42.00	11.00	35.90	10.45	≈20.7%	346 W	Jul 1, 2021
LG380N1K-A6	380 W	42.10	11.04	36.30	10.47	≈21.0%	351 W	Jul 1, 2021

≈ efficiency = Pmax ÷ panel area 1.813 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

LG Electronics datasheet · Cali-Graf calculation · CEC PV Module List (Oct 7, 2026)

Dimensions68.5 × 41 × 1.57 in1,740 × 1,042 × 40 mm
Module area1.81 m² (19.5 ft²)length × width
Weight41 lb (18.6 kg)
Cells60 cellsN-type
Back coverBlack backsheet
FrameBlack frame

Heat & cold behaviour

LG Electronics datasheet · CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	Datasheet	CEC listing test
Pmax coefficient γ	−0.35 %/°C	−0.342 %/°C
Voc coefficient β	−0.26 %/°C	−0.255 %/°C
Isc coefficient α	+0.03 %/°C	+0.026 %/°C
Vmp coefficient	≈ −0.38 %/°C	—
Operating cell temperature	NMOT 42 ± 3 °C	NOCT 48.7 °C

Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

At normal operating conditions (NMOT, 800 W/m²) — datasheet

Class	Pmax, W	Voc, V	Isc, A	Vmp, V	Imp, A
355 W	266.0	39.20	8.72	32.20	8.27

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
345 W	259.4 W	31.15 V × 8.33 A	68.2 W	99%
350 W	263.3 W	31.53 V × 8.35 A	69.2 W	99%
355 W	266.9 W	31.9 V × 8.37 A	70.1 W	99%
360 W	270.5 W	32.27 V × 8.38 A	71.1 W	99%
365 W	274.2 W	32.64 V × 8.4 A	72.1 W	99%
370 W	277.8 W	33.01 V × 8.42 A	73 W	99%
375 W	267.2 W	32.21 V × 8.3 A	71 W	95%
380 W	270.7 W	32.57 V × 8.31 A	72 W	95%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

LG Electronics datasheet

Max system voltage1,000 V
Max series fuse20 A
Fire rating (UL 61730)Type 2
Module temperature−40 °F to +185 °F−40 °C to +85 °C

Packaging: 25 per pallet

Certifications

CEC PV Module List (Oct 7, 2026) · LG Electronics datasheet

UL 61730IEC 61215IEC 61730IEC 61701IEC 62716Fire rating Type 2 (UL 61730)ISO 14001ISO 45001ISO 9001

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
IEC 61701datasheet
IEC 62716datasheet
Fire rating Type 2 (UL 61730)datasheet
ISO 14001factory, datasheet
ISO 45001factory, datasheet
ISO 9001factory, datasheet

Warranty & degradation

LG Electronics datasheet · Cali-Graf calculation

Product warranty25 years
Performance warranty25 years
Year 1≥ 98.5%
Then≤ 0.33% / year
Year 10≥ 95.53%calculated from warranty terms
Year 25≥ 90.6%

Independent reliability testing

Kiwa PVEL Scorecard

PVEL Scorecards

LG Electronics named Top Performer, 2018–2021

This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

Inverter compatibility & string sizing

LG Electronics datasheet · Cali-Graf calculation · NLR PVWatts v8 · CEC PV Module List (Oct 7, 2026) · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

44.5 V

Voc when cold

per panel

29.2 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

Min panels / string

MPPT from 60 V

Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above.

String inverters most named in SoCal permits

Inverter	Max DC input	MPPT	Window source	Panels per string
Tesla 1538000-xx-y	600 V	60–480 V	datasheet	3–13
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–13
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–13
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	9–11

Microinverters (one per panel)

Microinverter	Recommended module power	Max DC input	MPPT	Voc cold / Vmp hot	Check	DC/AC
Enphase IQ8PLUS-72-2-US	235–440 W	60 V	29–45 V	44.5 / 29.2 V	✓ Within range	1.29
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	44.5 / 29.2 V	✗ Not a match: module voltage below MPPT range	0.99
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	44.5 / 29.2 V	✓ Within range	0.48
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	44.5 / 29.2 V	⚠ Works; below MPPT at peak heat	1.15
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	44.5 / 29.2 V	⚠ Works; below MPPT at peak heat	1.07

Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.

SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	628	11,942	6.08
Palmdale	1,835	688	13,074	6.69
Chula Vista	1,696	636	12,084	6.11
Huntington Beach	1,643	616	11,706	5.89
Riverside	1,696	636	12,084	6.21
Santa Clarita	1,724	646	12,284	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Compare with similar 375 W panels

CEC PV Module List (Oct 7, 2026) · Qcells datasheet · Kiwa PVEL Scorecard · building permits

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
LG Electronics LG375N1K-A6	375 W	≈20.7%	−0.342	42	11	brand 2×	2
Qcells Q.PEAK DUO BLK ML-G10+ 380	380 W	≈19.4%	−0.362	45.16	11.01	product 2022, 2023	221
LONGi LR4-60HPB-370M	370 W	≈20.9%	−0.339	41.2	11.5	product 2021, 2022	193
REC Group REC380AA Pure	380 W	≈21.2%	−0.256	48.4	10.17	brand 9× (2016–2025)	66

Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

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 LG375N1K-A6?

Calculated from the panel area (1.81 m²): about 20.7% for the 375 W class. 375 W over 1.81 m² equals about 207 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 628 kWh per year per 375 W panel in Los Angeles and about 688 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.35 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 18.1% below the STC rating.

How many panels fit on one string?

With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 3–13 panels per string (Voc at 2 °C = 44.5 V, Vmp at 74 °C cell = 29.2 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with Enphase IQ8PLUS-72-2-US microinverters?

Voltage check against the Enphase datasheet: Voc when cold 44.5 V vs max input 60 V; Vmp when hot 29.2 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

25 years on the product and 25 years on performance: at least 98.5% of rated power in year 1, then no more than 0.33% per year — at least 90.6% after 25 years (manufacturer datasheet).

How big and heavy is it?

68.5 × 41 × 1.57 in (1,740 × 1,042 × 40 mm), 41 lb (18.6 kg).

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; LG Electronics was named a Top Performer in 2 Scorecards (2018–2021).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
LG Electronics — datasheet Specification Sheet.
Qcells — manufacturer datasheet “Q.PEAK DUO BLK ML-G10+ ENDURING HIGH PERFORMANCE”.
LG Electronics — document library on the manufacturer’s website (links above).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2018–2021.
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, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Dec 2021 – May 2022). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).