--- title: "LG LG400N2W-A5 400W Solar Panel - Specs & Review | ComparePV" description: "LG LG400N2W-A5 400W solar panel. Specs: 19.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/lg-lg400n2w-a5" updated: 2026-09-11 --- # LG LG400N2W-A5 Middle of its segment, weak in heat 321 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** LG - **Model:** LG400N2W-A5 - **Series:** NeON 2 72cell - **Rated power:** 400 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 400-450 W (321 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 430 W | Weak - bottom 1% | | | Module efficiency | 19.30% | 21.91% | Weak - bottom 1% | 12,799 | | Power density | 193.0 | 218.3 | Weak - bottom 1% | 12,785 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight (kg) | 21.7 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.30% | 21.91% | Weak - bottom 1% | 12,799 | | Power density | 193.0 | 218.3 | Weak - bottom 1% | 12,785 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 1% | 12,345 | | Weight per kWp | 54.2 | 51.2 | Typical | 8,496 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Watch out for - **-0.360 %/°C temperature coefficient** - Bottom 1% of the N-type 400-450 W segment, against a median of -0.290. Ranked 12,345th in the whole database. - **19.30% module efficiency** - Bottom 1% of the N-type 400-450 W segment, against a median of 21.91%. Ranked 12,799th in the whole database. - **193.0 watts per square metre** - Bottom 1% of the N-type 400-450 W segment, against a median of 218.3. Ranked 12,785th in the whole database. - **Best for:** Commercial. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 19.30 % - **Voltage at Pmax (Vmp):** 40.60 V - **Current at Pmax (Imp):** 9.86 A - **Open-circuit voltage (Voc):** 49.30 V - **Short-circuit current (Isc):** 10.47 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.020 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 72 - **Bifacial:** yes ### Physical - **Length:** 2024 mm - **Width:** 1024 mm - **Thickness:** 40 mm - **Weight:** 21.7 kg - **Area:** 2.07 m2 - **Power density:** 193.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 86.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 334 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12799 of 14005 | | Power density | 12785 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 8496 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Cello technology reduces power loss** - Replacing traditional 3 busbars with twelve thin wires increases current flow paths and reduces resistive losses, enabling up to 30% more energy yield versus a standard PV module of comparable power, according to the manufacturer. - **N-type cells resistant to LID** - N-type cell technology virtually eliminates light-induced degradation (LID), a common issue in older p-type modules, resulting in more stable energy output during the first years of operation. - **Bifacial construction** - The panel uses double-sided (bifacial) cells that capture additional energy from reflected light on the rear side, particularly beneficial for ground-mounted installations on bright surfaces. - **25-year power warranty at top-tier level** - The manufacturer guarantees at least 95.9% of rated power after 25 years — better than the standard warranties offered by many segment competitors (typically around 84-87% at 25 years), making the series financially attractive over the long term. - **Tier-1 manufacturer reputation and mechanical durability** - LG Electronics, a South Korean conglomerate founded in 1958, designed the NeON 2 series with rigorous quality testing and mechanical durability in mind, making it a strong choice for commercial installations and PV farms requiring reliable operation under harsh conditions. ## Cons - **Production discontinued — limited service** - LG Electronics officially closed its global solar panel business in 2022 (production at the Huntsville plant ended in Q2 2022), meaning no new units are available and replacement parts are limited in case of claims — though LG states it honors warranties, in practice this may result in pro-rated refunds rather than physical module replacement. - **Lower efficiency than newer competitors** - The 19.3% efficiency lags behind current models of the same 400 Wp power class — e.g., the Heliene 108HC M10 SL All Black reaches 20.5% — meaning a slightly larger module area is needed to achieve the same installed capacity. - **Shorter product warranty than some newer models** - The 15-year product warranty is standard for pre-2020 panel generations, while many current tier-1 manufacturers now offer 25-30 year product warranties, making this series less competitive against current market offerings. ## About this series LG NeON 2 72cell panels are an advanced solution for investors seeking maximum power from limited roof space. At the heart of this series is innovative **Cello technology**, which replaces traditional busbars with twelve thin wires. This solution not only enhances the module's aesthetics but, above all, drastically increases reliability and current flow efficiency, minimizing energy losses. Thanks to the use of **N-type cells**, these modules exhibit almost total resistance to the LID effect, which translates into significantly higher performance throughout the installation's lifecycle compared to standard p-type products. This series solves the problem of power drop at high temperatures, offering one of the best temperature coefficients on the market. It is an ideal choice for large commercial facilities and solar farms, where **outstanding mechanical durability** and the financial stability of the investment are key. The use of 72 cells allows for the optimization of installation and wiring costs while maintaining the highest yield parameters. They are distinguished from the competition by **above-average aesthetics** and rigorous quality tests, which guarantee trouble-free operation even in extreme weather conditions, ensuring full safety and peace of mind for demanding business users. ## Notable figures - Module efficiency of 19.3% is 2.6pp below average for \*\*N-type 400-450W\*\* panels (median: 21.9%) - 193.0 W/m² power density is 25.3 W/m² below \*\*N-type 400-450W\*\* median (218.3 W/m²) - requires larger installation area - At -0.36%/°C, loses 0.07pp more power per degree than \*\*N-type 400-450W\*\* median (-0.29%/°C) - #12799 for efficiency, #12345 for temperature performance out of 14005 panels ## Questions ### What is Cello technology in the LG NeON 2 72cell panels and what does it actually mean for an investor? Cello technology replaces the conventional 3 busbars with 12 thin wires. Current travels a shorter path, reducing resistive losses and boosting module efficiency. The thin wires are also far more flexible than busbars, so the panel withstands mechanical stress from wind and snow loads better and is significantly more resistant to micro-cracks in the cells. For investors, this means higher energy yield and a lower risk of failures over the long operational horizon. ### What warranty does the LG NeON 2 72cell series carry and how much power output remains after 25 years? The LG NeON 2 72cell series comes with a 15-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty. LG guarantees at least 80.2% of nominal power after 25 years of operation, with an annual degradation rate of just 0.6%. This is one of the lowest degradation figures in the commercial segment and directly improves the project's LCOE over its lifetime. ### Are the LG NeON 2 72cell panels bifacial and what does that mean for a utility-scale solar farm? Yes, the LG NeON 2 72cell modules are bifacial — the rear side generates additional energy from light reflected off the ground surface. In ground-mount installations with bright or gravel-covered albedo, energy yield can be 5–15% higher compared to monofacial modules. The commercial 72-cell format also reduces the total number of modules per MW, lowering BoS costs for cabling and mounting while delivering up to 400 Wp per module. ### Why are N-type cells in the LG NeON 2 72cell more resistant to long-term degradation than standard p-type cells? The N-type cells in the LG NeON 2 72cell contain virtually no boron, making them nearly immune to LID (Light Induced Degradation). In standard p-type modules, LID causes a permanent power drop of 1–3% within the first few weeks of sun exposure. The absence of LID means the module delivers its full rated power from day one and maintains higher efficiency throughout the entire 25-year warranty period. ### How do LG NeON 2 72cell panels perform on hot days when rooftop temperature exceeds 50°C? The LG NeON 2 72cell modules feature one of the best temperature coefficients in the commercial class — approximately -0.34%/°C for Pmax. By comparison, a typical p-type panel is rated at -0.40%/°C or worse. In practice, at a cell temperature of 70°C the LG module loses around 16.6% of nominal power, while a p-type panel loses nearly 21%. This difference compounds over years and results in a measurably higher annual energy yield in warm climates. ### Is the LG NeON 2 72cell series still available for purchase and should it be considered for a new installation? The LG NeON 2 72cell series has been discontinued. LG Energy Solution shut down its solar panel division in 2022, and no new modules of this series are being manufactured. Occasional remaining stock may appear at distributors or on the secondary market, but availability is very limited. For a new commercial or utility-scale installation, we recommend evaluating equivalent N-type modules (TOPCon or HJT) from manufacturers that actively support warranty obligations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/LG400N2W-A5-c5ac8210430c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | Cooler, +3.8 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, cooler, +3.8 pp | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +3.7 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, cooler, +3.7 pp | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, cooler, +3.7 pp | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +3.7 pp | | [MY Solar MS480NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms480nc-hjtpbft) | 480 W | +80 W, cooler, +2.8 pp | | [MY Solar MS475NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms475nc-hjtpbft) | 475 W | +75 W, cooler, +2.6 pp | | [Lexron 430W](https://comparepv.com/panel/lexron-430w) | 430 W | +30 W, +2.3 pp, +5 yr warranty | | [MY Solar MS470NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms470nc-hjtpbft) | 470 W | +70 W, cooler, +2.3 pp | | [Longi Solar LR4-72HPH-465M](https://comparepv.com/panel/longi-lr4-72hph-465m) | 465 W | +65 W, heavier, +2.1 pp | | [MY Solar MS465NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms465nc-hjtpbft) | 465 W | +65 W, cooler, +2.1 pp | --- Source: https://comparepv.com/panel/lg-lg400n2w-a5 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.