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LG Brand review

LG435QAC-A6

435 Wp N-type
ComparePV verdict

Light for its output, short guarantee

Rank 8,580 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
21.90
Typical · median 21.91%
Density (Wp/m²)
218.6
Typical · median 218.3
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
20.5
Strong · 1.5 kg below median
Warranty (yrs)
25
Weak · bottom 11%

The LG NeON R series redefines performance standards through the use of advanced N-type back-contact cell technology. The lack of busbars on the front of the module not only gives it an elegant, uniform appearance, but primarily eliminates the shading effect of electrodes on the cells, which directly translates into record energy yields. This is a solution dedicated to the most demanding investors who have limited roof space and want to maximize the use of available area. These panels effectively solve the problem of efficiency loss at high temperatures, maintaining operational stability even during summer heatwaves. The exceptional design also strengthens resistance to light-induced degradation and atmospheric factors, guaranteeing trouble-free operation for decades. Compared to the competition, this series stands out with its unique back-contact structure, which, combined with an aesthetic finish, makes it a premium segment product, ideal for modern single-family housing. By choosing these modules, you gain the certainty of stable power production and unrivaled aesthetics that increase the value of the property. The innovative busbar-less architecture minimizes the risk of micro-cracks, making this series one of the most reliable offerings on the photovoltaic market.

Ranking

321 panels in the segment N-type 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.90% 21.91% Typical 6,783
Power density 218.6 218.3 Typical 6,947
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 47.1 51.2 Strong · top 10% 1,504
Performance warranty 25 yrs 30 yrs Weak · bottom 11% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 caution
Best for

Residential and hot-climate.

Not ideal for

Owners who want a long output guarantee.

Strengths
47.1 kg per kWp

Top 10% of the N-type 400-450 W segment, against a median of 51.2. Ranked 1,504th in the whole database.

Watch-outs
25 year performance warranty

Bottom 11% of the N-type 400-450 W segment, against a median of 30 yrs.

What owners get
Back-contact technology, no front busbars

N-type cells with contacts on the rear side eliminate shading from front electrodes, delivering higher energy yield per unit of surface area — a key advantage on limited roof space.

High efficiency up to 22.1%

Efficiency in the 21.6-22.1% range places the modules in the premium segment and was a category-leading figure at the series' 2017 launch, driven by Cello Technology and N-type cells.

25-year product and power warranty

LG provides 25 years of both product and power output warranty — a tier-1 standard, backed by a dedicated warranty replacement inventory maintained even after series discontinuation.

Resistance to degradation and high temperatures

The busbar-free back-contact design reduces light-induced degradation (LID) and microcrack risk, while a low temperature coefficient supports more stable output in high heat compared to older PERC cells.

Tier-1 manufacturer with a long track record

LG Electronics, founded in 1958 in South Korea, was regarded as a tier-1 PV manufacturer with strict quality control, historically translating into lower failure rates versus lesser-known brands.

Trade-offs
Production discontinued in 2022

LG officially ended solar panel manufacturing and sales in June 2022, following its February 2022 exit announcement. This means no new units are available, service support is limited, and warranty claims rely solely on remaining inventory.

Efficiency below current competitors

The 22.1% peak efficiency trails currently available comparable N-type TOPCon modules, such as Luxor Solar ECO LINE (22.86%), Lina Energy LEPV 132 ULTRA PREMIUM (22.37%), and JA Solar JAM54D40 (22.5%) at the same 440 Wp power class.

No bifacial option available

The NeON R series is monofacial only (is_bifacial: false), while several competing N-type modules on the market now offer bifacial variants that add a few extra percentage points of yield from rear-side albedo gain.

Notes from the database
  • Efficiency of 21.9% matches the N-type 400-450W median
  • Power density of 218.6 W/m² matches the N-type 400-450W median
  • Temperature coefficient of -0.29%/°C matches the N-type 400-450W median
  • At 20.5 kg, this panel is 1.5 kg lighter than N-type 400-450W median (22.0 kg) - easier handling during installation
  • #6783 for efficiency, #2165 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.90 % Typical Segment median 21.91%
Vmpp · Impp 41.10 V · 10.59 A Operating point at max power
Voc · Isc 48.00 V · 11.20 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1910×1042×40 mm · 1.99 m² of roof
Weight 20.5 kg Strong Strong · 1.5 kg below median
Cells 66 · N-type Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Weak bottom 11% · median 30 yrs
End-of-warranty output 92.5 % Equals 397 W guaranteed
Degradation 1.50 → 0.25 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
LG LG435QAC-A6 435 W 21.90% -0.290 20.5 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, +2.4 pp, +5 yr warranty
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, +2.4 pp, +5 yr warranty
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, +2.4 pp, +5 yr warranty
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, +2.4 pp, +5 yr warranty
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, +2.4 pp, +5 yr warranty
LG430QAC-A6 430 W 21.60% -0.290 20.5 kg -0.3 pp
LG440QAC-A6 440 W 22.10% -0.290 20.5 kg +0.2 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +125 W, +2.9 pp, +5 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +120 W, +2.7 pp, +5 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +115 W, +2.5 pp, +5 yr warranty
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +105 W, +2.5 pp, +5 yr warranty
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +105 W, +2.5 pp, +5 yr warranty
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +110 W, heavier, +2.4 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +110 W, +2.3 pp, +5 yr warranty

Found 8 panels of the same or similar size to this one, within ±10 mm. See them here Found 47 panels of the same or similar size to this one, within ±25 mm. See them here Found 238 panels of the same or similar size to this one, within ±50 mm. See them here Found 1934 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the LG NeON R series still available for purchase?
The LG NeON R series has been discontinued following LG Electronics' exit from the solar market in 2022. Remaining units may still be found in distributor warehouses as end-of-line stock. If you require similar N-type back-contact technology, consider premium alternatives from other manufacturers. Before buying, always verify current availability and confirm who is handling warranty claims on behalf of LG Solar.
What is back-contact cell technology in the LG NeON R, and is it worth the premium price?
Back-contact technology relocates all busbars and electrodes to the rear side of the cell, leaving the front surface completely unobstructed. This eliminates shading losses caused by front-side busbars and maximizes light absorption across the entire cell area. The result is 22.1% module efficiency for the NeON R 440W model, combined with a sleek, uniform all-black appearance that adds aesthetic value to modern residential rooftops.
What efficiency and power output does the LG NeON R 440W deliver?
The LG NeON R 440W achieves 22.1% module efficiency, placing it among the top-performing residential solar panels ever produced. Its N-type cell structure minimizes light-induced degradation (LID), ensuring stable output throughout the module's lifespan. Compared to standard PERC panels, the NeON R generates more energy per square meter, making it the right choice for installations where every inch of roof space counts.
What warranty does the LG NeON R series carry, and is it still enforceable?
LG offered a 25-year product warranty and a 25-year linear power warranty for the NeON R series, guaranteeing at least 92.5% of rated output after 25 years. However, since LG exited the solar business in 2022, it is critical to confirm with your reseller which entity has assumed warranty obligations before committing to a purchase of remaining stock.
Are LG NeON R panels a good fit for a small or space-constrained roof?
Yes. With 22.1% module efficiency and 440 W per panel, the NeON R is specifically engineered for space-limited residential installations. You can achieve a higher system capacity within the same roof footprint compared to standard PERC panels rated at 380–400 W. A 10 kWp system built from NeON R modules requires noticeably fewer square meters, making it one of the most space-efficient premium residential PV solutions ever offered.
How do LG NeON R panels perform in high summer temperatures?
The N-type cells used in the NeON R series have a lower temperature coefficient than conventional P-type PERC cells, meaning power output degrades less as the module heats up. Rooftop panels regularly exceed 65°C on hot summer days, and the NeON R maintains noticeably more stable energy production under those conditions compared to most standard modules — translating directly into a higher annual energy yield for the system owner.
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