LG Electronics LG400A1C-A6

Name: LG Electronics LG400A1C-A6
Brand: LG Electronics

60 cells, with a built-in LM320UE-A2 microinverter. Power classes 395–405 W in the CEC list.

CEC listed · May 11, 2021UL 1741AC module · built-in microinverter

Power class

Power (STC)400 WCEC nameplate
Efficiency≈22.1%calculated from area
%/°C Pmax−0.310CEC listing test
PTC / STC93.5%PTC 374 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 3 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
LG395A1C-A6	395 W	43.60	11.29	37.00	10.69	≈21.8%	369 W	May 11, 2021
LG400A1C-A6	400 W	43.80	11.32	37.20	10.76	≈22.1%	374 W	May 11, 2021
LG405A1C-A6	405 W	43.90	11.35	37.50	10.82	≈22.3%	379 W	May 11, 2021

≈ efficiency = Pmax ÷ CEC-listed area 1.81 m².

Built-in microinverter

CEC PV Module List (Oct 7, 2026) · NLR SAM inverter library · Cali-Graf calculation

DC module insideLG395Q1C-A6
MicroinverterLM320UE-A2
Microinverter AC output322 W ACNLR SAM inverter library
DC/AC ratio1.24Pmax ÷ microinverter AC rating

The string calculator does not apply: each panel has its own microinverter, wired as AC branch circuits.

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.81 m² (19.5 ft²)CEC-listed area
Cells60 cells
Back coverWhite backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.310 %/°C
Voc coefficient β	−0.242 %/°C
Isc coefficient α	+0.027 %/°C
Operating cell temperature	NOCT 47.7 °C

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

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
395 W	294 W	34.59 V × 8.5 A	74.8 W	95%
400 W	297.5 W	34.78 V × 8.55 A	75.7 W	95%
405 W	301.6 W	35.06 V × 8.6 A	76.7 W	95%

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

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.

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	670	12,067	6.08
Palmdale	1,835	734	13,212	6.69
Chula Vista	1,696	678	12,211	6.11
Huntington Beach	1,643	657	11,830	5.89
Riverside	1,696	678	12,211	6.21
Santa Clarita	1,724	690	12,413	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.

Questions & answers

How efficient is the LG Electronics LG400A1C-A6?

Calculated from the panel area (1.81 m²): about 22.1% for the 400 W class. 400 W over 1.81 m² equals about 221 W per square meter.

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

PVWatts v8 with typical-year weather gives about 670 kWh per year per 400 W panel in Los Angeles and about 734 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.310 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 16.1% below the STC rating.

What microinverter is built into the LG Electronics LG400A1C-A6?

The CEC listing names LM320UE-A2 paired with the LG395Q1C-A6 DC module; the microinverter is rated 322 W AC.

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 (snapshot Oct 7, 2026).
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.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).