--- title: "JA Solar JAT54S41-460/LR 460W Solar Panel - Specs & Review | ComparePV" description: "JA Solar JAT54S41-460/LR 460W solar panel. Specs: 23.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-jat54s41-460-lr" updated: 2026-09-11 --- # JA Solar JAT54S41-460/LR Light for its output, no clear weak spot 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAT54S41-460/LR - **Series:** JAT54S41 LR (Black n-type Monofacial Module) - **Rated power:** 460 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 460 W | 465 W | Typical | | | Module efficiency | 23.00% | 22.52% | Strong - top 22% | 1,919 | | Power density | 230.2 | 225.2 | Strong - top 20% | 1,876 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 3% | 511 | | Weight (kg) | 19.3 kg | 24.0 kg | Strong - top 1% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.00% | 22.52% | Strong - top 22% | 1,919 | | Power density | 230.2 | 225.2 | Strong - top 20% | 1,876 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 3% | 511 | | Weight per kWp | 42.0 | 52.2 | Strong - top 1% | 198 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **42.0 kg per kWp** - Top 1% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 198th in the whole database. - **-0.260 %/°C temperature coefficient** - Top 3% of the TOPCon 450-500 W segment, against a median of -0.290. Ranked 511th in the whole database. - **230.2 watts per square metre** - Top 20% of the TOPCon 450-500 W segment, against a median of 225.2. - **Best for:** Residential, commercial and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 460 W - **Efficiency:** 23.00 % - **Voltage at Pmax (Vmp):** 34.46 V - **Current at Pmax (Imp):** 13.36 A - **Open-circuit voltage (Voc):** 40.82 V - **Short-circuit current (Isc):** 14.72 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 19.3 kg - **Area:** 2.00 m2 - **Power density:** 230.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 402 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1919 of 14005 | | Power density | 1876 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 198 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Highest efficiency in its class** - The 22.8–24% efficiency range outperforms all listed peer comparables: Sunket SKT460~480M10-120D3 peaks at 22.24%, Shinson S-Blade at 22.24%, and First Solar Series 6 Plus Bifacial at only 19%. Even the bottom of the series (22.8%) beats the direct competition by more than 0.5 percentage points, translating to measurably higher annual energy yield per unit of roof area. - **N-type TOPCon – near-zero LID/LeTID** - N-type TOPCon cells are immune to LID (Light-Induced Degradation) and LeTID, which cause 1–2% first-few-weeks power loss in p-type PERC modules. Annual degradation for TOPCon is approximately 0.4% vs. 0.6–0.8% for PERC (NREL/JA Solar 2024 data), resulting in several additional percentage points of cumulative yield over a 30-year asset life. - **30-year linear power warranty** - The manufacturer guarantees ≥87.4% of nominal power after 30 years at ≤0.4% annual degradation. This surpasses the 25-year power warranties common among most Tier 1 peers. The product (materials and workmanship) warranty is 25 years. - **JA Solar – BNEF Tier 1, bankable Q1 2026** - JA Solar has maintained its position on the BNEF bankable manufacturers list continuously for multiple years and reported annual manufacturing capacity exceeding 100 GW as of Q1 2026. Tier 1 status streamlines non-recourse project financing and reduces residual risk for investors and insurance underwriters. - **All Black – aesthetics without efficiency trade-off** - Full-black aesthetics (black frame, black cells, black backsheet) are achieved at up to 24% front-side efficiency, with no technological compromise typically associated with lower-cost All Black modules built on older PERC cells. The monofacial architecture simplifies racking design and eliminates the albedo-management requirements that can introduce mounting errors on bifacial installations. ## Cons - **No bifacial rear-side gain on flat roofs** - The monofacial construction cannot harvest energy reflected from the ground or rooftop substrate. On flat-roof installations with light-colored ballast or membrane (albedo >15%), a bifacial module — even one with lower front-side efficiency such as First Solar Series 6 Plus (19%) — may capture an additional 5–12% generation from the rear. The gap is negligible on pitched rooftops, but for flat-roof projects a bifacial LCOE comparison is warranted. ## About this series The JA Solar JAT54S41 LR (Black n-type Monofacial Module) series was designed with rooftop installations in mind, focusing on maximizing energy production from limited surfaces and stable performance over years. The use of **TOPCon n-type cells** translates into extremely low light-induced degradation susceptibility, enabling the module to maintain high efficiency in real-world conditions. In practice, this means more predictable yields and fewer disappointments after a few seasons. Another noteworthy feature is the **monofacial roof-optimized construction** - easier to design and less sensitive to installation errors compared to bifacial solutions. This series offers **optimized performance under low irradiance**, which aids on cloudy days and in the morning and evening, when many modules noticeably lose efficiency. Additionally, **better performance at higher temperatures** supports energy production during the summer months when the roof heats up significantly. This is an excellent choice for single-family homes, multi-family buildings, and aesthetically demanding projects where **All-Black appearance** is key, without compromising on technology. ## Notable figures - Efficiency of 23.0% matches the \*\*TOPCon 450-500W\*\* median - 230.2 W/m² power density - 5.0 W/m² more than \*\*TOPCon 450-500W\*\* median (225.2 W/m²), more power per roof area - Temperature coefficient of -0.26%/°C vs median -0.29%/°C means ~1% less power loss at 65°C - At 19.3 kg, this panel is 4.7 kg lighter than \*\*TOPCon 450-500W\*\* median (24.0 kg) - easier handling during installation - In the top 14% for efficiency among all TOPCon panels ## Questions ### What is TOPCon technology and why does the JA Solar JAT54S41 LR series use it? TOPCon (Tunnel Oxide Passivated Contact) is an n-type cell architecture that minimizes electrical losses at the cell surface. It delivers module efficiency above 22% and near-zero light-induced degradation (LID). In the JAT54S41 LR series, TOPCon ensures stable power output throughout the module's entire service life — which matters significantly when backed by a 30-year linear power warranty. ### What warranty does the JA Solar JAT54S41 LR come with? The JAT54S41 LR series is backed by a 25-year product warranty covering manufacturing defects and materials, plus a 30-year linear power output warranty. After 30 years, the module is guaranteed to retain at least 87.4% of its rated power. As a Tier 1 manufacturer with a proven track record, JA Solar provides realistic assurance that warranty claims can be enforced over the full declared period. ### Is the JAT54S41 LR suitable for installation on a pitched residential roof? Yes, the JAT54S41 LR series is specifically designed for rooftop installations on both pitched and flat roofs. The monofacial construction simplifies system design and is less sensitive to installation errors than bifacial modules. Up to 480 Wp in a standard 54-cell format is compatible with most racking systems available on the market. The series is also an excellent fit for aesthetically driven All Black installations. ### How do JAT54S41 LR modules perform in summer heat when the roof temperature rises? N-type TOPCon cells have a lower temperature coefficient than older PERC technology — approximately -0.29%/°C for comparable JA Solar models. This means power loss of roughly 2.9% per 10°C temperature rise, versus 3.5–4% typical of p-type cells. When a roof reaches 70°C in summer, this advantage can translate to several hundred additional kWh in the annual energy balance of a real-world system. ### Does the All Black design of the JAT54S41 LR reduce its power output? No. The All Black aesthetic is achieved through a black frame, black backsheet, and black busbars without any modification to the cells themselves. Rated power up to 480 Wp and module efficiency remain identical to the standard version. The only marginal tradeoff is a slightly higher operating temperature due to darker components, which is effectively negligible given the superior thermal characteristics of n-type TOPCon technology. ### Does the JAT54S41 LR series perform well on overcast days and in low-irradiance conditions? Yes — a key advantage of the n-type TOPCon cells in the JAT54S41 LR series is optimized low-irradiance performance. The module harvests diffuse daylight more effectively than PERC technology, which is especially relevant in Central European climates where overcast days are common throughout fall and winter. This results in higher annual energy yields than the nameplate power rating alone would suggest. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/39113f992bad-1a9e5548fb9b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +50 W, heavier, +2.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +35 W, heavier, +1.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +45 W, heavier, +1.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +30 W, heavier, +1.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +40 W, heavier, +1.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +40 W, heavier, +1.5 pp | | [JA Solar NS-420MH-108](https://comparepv.com/panel/ja-solar-ns-420mh-108) | 420 W | -40 W, heavier, -2.0 pp | | [JA Solar JAM54D41-430/LB](https://comparepv.com/panel/ja-solar-jam54d41-430-lb-1) | 430 W | -30 W, hotter, -1.5 pp | | [JA Solar JAM54S40-435/LR](https://comparepv.com/panel/ja-solar-jam54s40-435-lr) | 435 W | -25 W, hotter, -1.2 pp | | [JA Solar JAM54S40-440/LR](https://comparepv.com/panel/ja-solar-jam54s40-440-lr) | 440 W | -20 W, hotter, -1.0 pp | --- Source: https://comparepv.com/panel/ja-solar-jat54s41-460-lr Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.