--- title: "JA Solar JAM54D41-430/LB 430W Solar Panel - Specs & Review | ComparePV" description: "JA Solar JAM54D41-430/LB 430W solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-jam54d41-430-lb-1" updated: 2026-09-11 --- # JA Solar JAM54D41-430/LB Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM54D41-430/LB - **Series:** JAM54D41 LB - **Rated power:** 430 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 430 W | 435 W | Typical | | | Module efficiency | 21.50% | 22.00% | Weak - bottom 17% | 7,958 | | Power density | 215.2 | 220.2 | Weak - bottom 23% | 7,816 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 22.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 22.00% | Weak - bottom 17% | 7,958 | | Power density | 215.2 | 220.2 | Weak - bottom 23% | 7,816 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 51.2 | 51.4 | Typical | 4,522 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.50% module efficiency** - Bottom 17% of the TOPCon 400-450 W segment, against a median of 22.00%. - **215.2 watts per square metre** - Bottom 23% of the TOPCon 400-450 W segment, against a median of 220.2. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 430 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 32.12 V - **Current at Pmax (Imp):** 13.39 A - **Open-circuit voltage (Voc):** 38.50 V - **Short-circuit current (Isc):** 14.14 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 2.00 m2 - **Power density:** 215.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 376 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 7816 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 4522 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Up to 22.8% efficiency — top of segment** - Peak efficiency of 22.8% matches the two strongest peer comparables: Sunlike Solar SKT420~455M10-108D6 and IBC Solar LS-TA2 (both at 22.8%). Even the minimum variant (21.5%) outperforms Waaree ARKA Series (20.93%), confirming the series' top-tier position within the competitive set. - **N-type TOPCon — low degradation and 30-year linear warranty** - N-type TOPCon cells deliver first-year degradation ≤1% (LID) and ≤0.4%/year thereafter, guaranteeing ≥87.4% of rated power after 30 years per JA Solar's datasheet (March 2025). Standard PERC technology typically offers 25-year power warranties with degradation to ~84.8%, making this series notably superior over a full project lifetime. - **Temperature coefficient of -0.300%/°C** - A Pmax temperature coefficient of -0.300%/°C outperforms standard PERC modules (~-0.350%/°C). At 35°C above STC — a realistic summer operating condition in Poland — this translates to approximately 1.75 percentage points of additional power output compared to an equivalent PERC module with the same STC rating. - **Double glass 1.6+1.6 mm — mechanical durability and PID-free design** - Dual tempered glass withstands static loads up to 5,400 Pa (front) and 2,400 Pa (rear), eliminates Potential Induced Degradation (PID) without additional BoS hardware, and achieves IP68 ingress protection. In Poland's freeze-thaw cycling conditions, glass-glass construction also minimizes micro-crack propagation in cells. - **BNEF Tier-1 manufacturer with >100 GW/year capacity** - JA Solar is listed on BNEF's Tier-1 Bankable Module Manufacturers ranking for Q1 2026 with a declared production capacity exceeding 100 GW/year. Bankable status ensures project finance eligibility from international lenders and provides long-term warranty backstop security for end customers. ## Cons - **Product warranty varies 12–25 years within the series** - The series context confirms a product warranty range of 12 to 25 years depending on the variant. The full-spec configuration is the JAM54D41 LB 25Y (25 years), but certain variants distributed in the market carry only a 12-year product warranty — half as long. Buyers must verify the specific variant designation and warranty document to avoid unknowingly accepting reduced coverage. - **Bifacial yield gain negligible on typical Polish rooftops** - The rated 80%±10% bifaciality factor delivers a meaningful 10–20% rear-side energy gain only when ground albedo exceeds 0.40 (white membrane, light gravel, snow). On dark ceramic roof tiles dominant in Polish residential installs (albedo 0.10–0.15), actual rear-side contribution drops to 2–5%, making bifacial technology most relevant for ground-mount and carport systems rather than typical pitched-roof prosumer installations. ## About this series The JA Solar JAM54D41 LB series are modern full-black modules designed for maximum yield from limited rooftop space. Utilizing **N-type TOPCon cells**, they offer highly stable performance over time and significantly lower power losses at the start of operation, genuinely enhancing the long-term profitability of installations. Their **double glass construction** increases resistance to moisture, micro-cracks, and variable weather conditions - particularly important given Poland’s climate, where durability and consistent performance are key. These modules employ **bifacial technology**, enabling them to harvest additional energy from reflected light - especially effective on light-colored roofs, carports, and ground-mounted structures. **Half-cut cells** improve performance under partial shading and lower light conditions. This makes them an excellent choice for homes, multi-family buildings, and commercial installations where aesthetics, durability, and high energy output are paramount. ## Notable figures - At 21.5% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - At 215.2 W/m², this panel generates 5.0 W/m² less per unit area than \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces - Ranked #7958 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the JA Solar JAM54D41 LB series carry? The JAM54D41 LB series comes with a 25-year product warranty and a 30-year linear power output warranty. The manufacturer guarantees at least 98% of rated power after year one, with annual degradation capped at 0.4% thereafter. At the end of the 30-year warranty period, modules are guaranteed to deliver at least 83.1% of their original rated output — one of the longest linear power warranties available on the market. ### How do the N-type TOPCon cells in the JAM54D41 LB compare to standard PERC technology? TOPCon (Tunnel Oxide Passivated Contact) cells use a thin passivation layer on the rear cell surface to reduce carrier recombination and boost conversion efficiency. Compared to PERC, N-type TOPCon cells deliver a lower temperature coefficient, significantly reduced LID (Light Induced Degradation) at system startup, and slower power degradation over time. For the end user, this translates into a measurably higher cumulative energy yield — especially noticeable after 10–15 years of operation. ### Do the bifacial JAM54D41 LB panels make sense on a standard pitched rooftop? The bifacial design allows the rear side of the panel to harvest energy from reflected light. On a dark-colored pitched roof the gain is modest, but on light-colored or metal roofing, carports, pergolas, or ground-mounted systems, rear-side generation can add several percentage points to total output. The bifaciality factor of the JAM54D41 LB series is approximately 80% ±10% — actual gains depend on surface albedo and tilt angle, so it is worth discussing this with your installer at the design stage. ### Does the full-black design of the JAM54D41 LB modules affect their efficiency? The all-black frame and glass do not reduce module efficiency — the JAM54D41 LB series reaches up to 22.5% module efficiency, placing it among the top-performing residential panels. Dark surfaces can run slightly warmer on hot days, but the manufacturer's temperature coefficient specifications already account for this. The full-black aesthetic makes this series an excellent fit for residential and multi-family buildings where roof appearance matters. ### What are the dimensions of the JA Solar JAM54D41 LB panels and are they compatible with standard racking systems? The JAM54D41 LB modules measure 1762×1134×30 mm and weigh approximately 27–28 kg — slightly more than a single-glass panel due to the double-glass construction. They are compatible with most standard aluminum rail systems using mid and end clamps, for both rooftop and ground-mount applications. Because of the increased weight, it is advisable to verify that your roof structure and racking can handle the additional load before ordering. ### Who is the JAM54D41 LB series best suited for — residential, commercial, or ground-mount installations? With output up to 455 Wp, the JAM54D41 LB modules are engineered to maximize yield from limited roof space. The full-black aesthetic and durable double-glass construction make them an ideal choice for single-family homes and multi-family buildings. The bifacial technology and moisture resistance also make them equally well-suited for carports, canopies, and ground-mount systems, where the rear side of the panel can effectively capture reflected irradiance. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/17b61ba17ae9f0d-6179275cbc3b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A480-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a480-mah54mw) | 480 W | +50 W, cooler, +2.6 pp | | [Gokin GK-5-54HG-480M](https://comparepv.com/panel/gokin-gk-5-54hg-480m) | 480 W | +50 W, cooler, +2.6 pp | | [Jinko Solar JKM480N-48QL6-DB-F2-EU](https://comparepv.com/panel/jinko-solar-jkm480n-48ql6-db-f2-eu) | 480 W | +50 W, cooler, +2.5 pp | | [Gamko New Energy GKA96N-PRO-480W](https://comparepv.com/panel/gamko-new-energy-gka96n-pro-480w) | 480 W | +50 W, hotter, +2.5 pp | | [JA Solar NS-420MH-108](https://comparepv.com/panel/ja-solar-ns-420mh-108) | 420 W | -10 W, heavier, -0.5 pp | | [JA Solar JAM54S40-435/LR](https://comparepv.com/panel/ja-solar-jam54s40-435-lr) | 435 W | Lighter, +0.3 pp | | [JA Solar JAM54S40-440/LR](https://comparepv.com/panel/ja-solar-jam54s40-440-lr) | 440 W | +10 W, lighter, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +80 W, cooler, +3.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +65 W, cooler, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +75 W, cooler, +3.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +60 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +70 W, cooler, +3.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +70 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/ja-solar-jam54d41-430-lb-1 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.