--- title: "LG LG435QAC-A6 435W Solar Panel - Specs & Review | ComparePV" description: "LG LG435QAC-A6 435W solar panel. Specs: 21.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/lg-lg435qac-a6" updated: 2026-09-11 --- # LG LG435QAC-A6 Light for its output, short guarantee 321 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** LG - **Model:** LG435QAC-A6 - **Series:** NeON®R - **Rated power:** 435 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 400-450 W (321 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 435 W | 430 W | Typical | | | 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 (kg) | 20.5 kg | 22.0 kg | Strong - top 10% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | ### 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 out for - **25 year performance warranty** - Bottom 11% of the N-type 400-450 W segment, against a median of 30 yrs. - **Best for:** Residential and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 435 W - **Efficiency:** 21.90 % - **Voltage at Pmax (Vmp):** 41.10 V - **Current at Pmax (Imp):** 10.59 A - **Open-circuit voltage (Voc):** 48.00 V - **Short-circuit current (Isc):** 11.20 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 66 ### Physical - **Length:** 1910 mm - **Width:** 1042 mm - **Thickness:** 40 mm - **Weight:** 20.5 kg - **Area:** 1.99 m2 - **Power density:** 218.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 92.5 % - **First-year degradation:** 1.50 % - **Annual degradation:** 0.25 % - **Output after 30 years:** 397 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6783 of 14005 | | Power density | 6947 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1504 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **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. ## Cons - **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. ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/LG-NeON-R-430-440W-66-cell-datasheet-9b6ad2393cbe.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +50 W, +2.4 pp, +5 yr warranty | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +50 W, +2.4 pp, +5 yr warranty | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +50 W, +2.4 pp, +5 yr warranty | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +50 W, +2.4 pp, +5 yr warranty | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, +2.4 pp, +5 yr warranty | | [LG LG430QAC-A6](https://comparepv.com/panel/lg-lg430qac-a6) | 430 W | -0.3 pp | | [LG LG440QAC-A6](https://comparepv.com/panel/lg-lg440qac-a6) | 440 W | +0.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +125 W, +2.9 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +120 W, +2.7 pp, +5 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +115 W, +2.5 pp, +5 yr warranty | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +105 W, +2.5 pp, +5 yr warranty | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +105 W, +2.5 pp, +5 yr warranty | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +110 W, heavier, +2.4 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +110 W, +2.3 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/lg-lg435qac-a6 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.