--- title: "JA Solar JAT60S41-505/LR Solar Panel: Specs & Datasheet | ComparePV" description: "JA Solar JAT60S41-505/LR solar panel. Specs: 22.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-jat60s41-505-lr" image: "https://comparepv.com/og/panel/ja-solar-jat60s41-505-lr.png" updated: 2026-09-11 --- # JA Solar JAT60S41-505/LR Strong in heat, no clear weak spot 142 panels in the segment N-type 500-550 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAT60S41-505/LR - **Series:** JAT60S41 LR - **Rated power:** 505 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 500-550 W (142 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 505 W | 520 W | Weak - bottom 21% | | | Module efficiency | 22.80% | 22.55% | Typical | 2,769 | | Power density | 228.0 | 225.3 | Typical | 2,818 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 7% | 515 | | Weight (kg) | 23.5 kg | 26.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.80% | 22.55% | Typical | 2,769 | | Power density | 228.0 | 225.3 | Typical | 2,818 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 7% | 515 | | Weight per kWp | 46.5 | 50.0 | Typical | 1,199 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.260 %/°C temperature coefficient** - Top 7% of the N-type 500-550 W segment, against a median of -0.290. Ranked 515th in the whole database. - **Best for:** Residential, commercial, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 505 W - **Efficiency:** 22.80 % - **Voltage at Pmax (Vmp):** 38.34 V - **Current at Pmax (Imp):** 13.18 A - **Open-circuit voltage (Voc):** 45.36 V - **Short-circuit current (Isc):** 14.60 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:** N-type - **Cell count:** 120 ### Physical - **Length:** 1953 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.5 kg - **Area:** 2.21 m2 - **Power density:** 228.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.35 % - **Output after 30 years:** 449 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2769 of 14129 | | Power density | 2818 of 14129 | | Temperature coefficient | 515 of 14129 | | Weight | 1199 of 14129 | | Warranty | 21 of 14129 | ## Pros - **22.8-23.9% efficiency - top of segment** - Peak module efficiency of 23.9% matches the Huasun Everest G12R (23.9%) and outperforms both the Lu'an Solar MO series (22.32%) and Gamko GKA108N-PRO (23.85%). Higher efficiency translates directly to more kWp per unit of roof or ground area without increasing module count. - **N-type TOPCon - low LID degradation** - N-type TOPCon cells exhibit LID below 1% in year one and linear degradation ≤0.4%/yr, lower than typical PERC modules (~0.55%/yr). This guarantees retention of ≥87.4% of rated power output after 30 years of operation. - **Half-cut cells - reduced partial shading losses** - The half-cut cell architecture limits current mismatch losses under partial shading (chimneys, antennas, trees) and prevents full string shutdown. Six power variants (505-530 Wp) simplify array-level design optimization without respecifying MPPT trackers. - **30-year linear power warranty** - JA Solar guarantees ≥87.4% of rated power after 30 years at ≤0.4%/yr linear degradation, backed by a 25-year product warranty. The market standard for PERC modules is typically a 25-year linear and 10-15-year product warranty; the extended terms improve LCOE modeling for commercial and C&I projects. - **JA Solar BNEF Tier-1 - bankable manufacturer** - JA Solar (est. 2005) holds BNEF Tier-1 bankable manufacturer status (methodology updated March 2026) and belongs to the group of global producers exceeding 80 GW/yr of module capacity. This underpins non-recourse project financing eligibility and ensures long-term replacement module availability throughout the warranty horizon. ## Cons - **Monofacial only - no bifacial variant** - The JAT60S41 LR series does not include a bifacial variant (is\_bifacial: false). For ground-mount installations with high-albedo surfaces (albedo >20%), bifacial modules can yield 5-15% additional annual energy gain. Projects requiring bifacial output must be respecified using a separate JA Solar series (e.g., JAM60D41 LR dual-glass bifacial). ## About this series The JA Solar JAT60S41 LR series was designed for maximum yield from the same roof or ground surface area - these are high-efficiency modules based on N-type cells in TOPCon architecture. In practice, this means **better performance at high temperatures** and more predictable yields during the summer season, when many installations lose power. The cell-bonded construction improves panel performance under partial shading (e.g., chimneys, antennas, trees), making **power drops less impactful** for the entire string. Additionally, TOPCon helps minimize typical degradation phenomena, translating to **more stable long-term production** and quieter installation operation. This is an excellent choice for investors who want **more power from fewer modules** - whether in modern home micro-installations or commercial projects, where every square meter counts, and performance under variable weather conditions is key. ## Notable figures - Efficiency of 22.8% matches the \*\*N-type 500-550W\*\* median - Power density of 228.0 W/m² matches the \*\*N-type 500-550W\*\* median - At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions - 23.5 kg weight - 2.7 kg lighter than \*\*N-type 500-550W\*\* median (26.2 kg), reducing installation effort - In the top 20% for efficiency among all N-type panels ## Questions ### What warranty does the JA Solar JAT60S41 LR series come with? The JA Solar JAT60S41 LR series includes a 25-year product warranty covering material and workmanship defects, along with a 30-year power output warranty. This is among the most comprehensive warranty packages available in the residential and commercial PV market. The 30-year linear power guarantee protects against excessive degradation and gives system owners reliable output projections over the full operational lifetime of the installation. ### What is TOPCon technology and why does it matter in the JAT60S41 LR panels? TOPCon (Tunnel Oxide Passivated Contact) is an advanced N-type cell architecture that minimizes electron recombination losses at the cell surface. In practice, the JAT60S41 LR achieves module efficiency in the 22.8-23.9% range, significantly outperforming older PERC modules. N-type cells also exhibit a lower temperature coefficient, which translates to reduced power losses on hot days and slower long-term degradation compared to P-type technologies. ### Are the JA Solar JAT60S41 LR panels suitable for a roof partially shaded by a chimney or antenna? Yes. The JAT60S41 LR series uses half-cut cell technology, which limits the impact of partial shading on the entire string. When shade falls on a portion of the module, power losses are confined to that isolated cell section rather than affecting the full string output. This makes the series a practical choice for rooftops with chimneys, antennas, or nearby trees, where conventional full-cell modules would suffer considerably greater energy losses. ### How do the JAT60S41 LR modules perform in high summer temperatures? The N-type cells used in the JAT60S41 LR series have a lower temperature coefficient than conventional P-type PERC cells. At typical operating cell temperatures of 45-65°C during summer, power losses are smaller compared to older technologies. This results in higher seasonal energy yields and more predictable LCOE calculations, which is a significant advantage when evaluating the financial return of a PV investment in warm climates. ### Is JA Solar a reliable manufacturer, and is the JAT60S41 LR series still available? JA Solar holds Tier 1 bankability status according to leading industry rankings, reflecting strong financial standing and a long-established global market presence. The company is headquartered in China and distributes modules worldwide through a broad network of certified partners. The JAT60S41 LR series is currently active and has not been discontinued, making it straightforward to source additional modules for system expansions. ### What is the rated peak power of the JAT60S41 LR module, and how many panels does a typical home need? The JA Solar JAT60S41 LR has a rated peak power of 530 Wp. A typical residential system sized between 6 and 10 kWp requires approximately 12 to 19 panels from this series. The module's efficiency of over 22% means the required system power can be achieved using less roof area than older-generation panels, which is a key advantage on rooftops with limited or irregularly shaped surfaces. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/2381e64ac665ed-9db1540131fd.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +2.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -10 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +1.9 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Heavier, +1.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +50 W, heavier, +1.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -15 W, lighter, +1.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +1.7 pp | | [JA Solar JAM60D41 485/LB](https://comparepv.com/panel/ja-solar-jam60d41-485-lb) | 485 W | Hotter, heavier, -0.9 pp | | [JA Solar JAM60D41 490/LB](https://comparepv.com/panel/ja-solar-jam60d41-490-lb) | 490 W | Hotter, heavier, -0.7 pp | | [JA Solar JAM60D41 495/LB](https://comparepv.com/panel/ja-solar-jam60d41-495-lb) | 495 W | Hotter, heavier, -0.4 pp | | [JA Solar JAM60S40-500/LR](https://comparepv.com/panel/ja-solar-jam60s40-500-lr) | 500 W | Hotter | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +55 W, heavier, +2.0 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +45 W, lighter, +1.6 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +35 W, +1.6 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +35 W, +1.6 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +40 W, heavier, +1.5 pp | --- Source: https://comparepv.com/panel/ja-solar-jat60s41-505-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.