--- title: "JA Solar JAM54S30-415/MR 415W Solar Panel - Specs & Review | ComparePV" description: "JA Solar JAM54S30-415/MR 415W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-jam54s30-415-mr" updated: 2026-09-11 --- # JA Solar JAM54S30-415/MR Light for its output, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM54S30-415/MR - **Series:** JAM54S30 390-415/MR Series - **Rated power:** 415 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 410 W | Typical | | | Module efficiency | 21.30% | 20.60% | Strong - top 8% | 8,519 | | Power density | 212.5 | 206.2 | Strong - top 11% | 8,791 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 19.5 kg | 22.0 kg | Strong - top 5% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 20.60% | Strong - top 8% | 8,519 | | Power density | 212.5 | 206.2 | Strong - top 11% | 8,791 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 47.0 | 53.0 | Strong - top 5% | 1,446 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **47.0 kg per kWp** - Top 5% of the PERC 400-450 W segment, against a median of 53.0. Ranked 1,446th in the whole database. - **21.30% module efficiency** - Top 8% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 8,519th in the whole database. - **212.5 watts per square metre** - Top 11% of the PERC 400-450 W segment, against a median of 206.2. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 31.61 V - **Current at Pmax (Imp):** 13.13 A - **Open-circuit voltage (Voc):** 37.45 V - **Short-circuit current (Isc):** 14.02 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 19.5 kg - **Area:** 1.95 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 341 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 8791 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 1446 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **21.3% efficiency leads peer group** - The 415 Wp variant reaches 21.3% module efficiency, edging out direct comparables: AE Solar AURORA AE MD-108 (21.28%), LEDVANCE M395~415P54LM-BF-F3 (21.25%), and Aptos Solar DNA-108-Monofacial (21.25%). Higher specific yield per unit roof area. - **11BB Deep Blue 3.0 half-cut PERC** - The 11-busbar (11BB) gapless ribbon design combined with a 108-cell half-cut configuration (1722×1134×30 mm, 19.5 kg) lowers series resistance and reduces microcracks compared to legacy 5–9BB modules. Splitting each cell electrically isolates the top and bottom halves of the module, limiting mismatch losses under partial shading. - **Low temperature coefficient −0.35%/°C** - Pmax TC of −0.35%/°C sits at the favorable end of the PERC range (typical: −0.35 to −0.40%/°C), yielding approximately 1.5–2% more annual output versus modules rated at −0.40%/°C when cell temperatures regularly reach 55–65°C during summer operation in Central European climates. - **JA Solar — continuous BNEF Tier-1 status** - JA Solar has maintained BNEF Tier-1 bankable-manufacturer status for over a decade and remains listed in the Q1 2026 report. Tier-1 classification requires supplying at least six projects exceeding 10 MW each, financed by independent commercial banks within 24 months, underwriting the credibility of the 25-year linear power warranty (≥84.8% of rated output). ## Cons - **Discontinued series (EOL 2023)** - The JAM54S30 390–415/MR line was discontinued in 2023. New replacement modules are scarce on the market; expanding or repairing an installation after 2025 may make it impossible to source an identical module, risking MPPT string mismatch. - **PERC technology, not N-type TOPCon** - Monofacial PERC exhibits higher LID (~2–3% initial degradation) compared to N-type TOPCon cells (\<1% LID). Newer JA Solar lines (e.g., JAM54D40 TOPCon, released 2022+) deliver a lower annual degradation rate (~0.40%/yr vs ~0.55%/yr for PERC), compounding to a 3–4% cumulative output difference over a 25-year project horizon. - **12-year product warranty** - The product workmanship warranty covers 12 years, while the market standard for new Tier-1 launches since 2022–2023 (including newer JA Solar lines, Jinko Tiger Neo, Trina Vertex S+) is 15 years. The shorter coverage window raises the risk of out-of-pocket repair costs between years 13 and 15 of operation. - **Monofacial only — no bifacial gain** - The series is strictly monofacial, whereas the direct peer LEDVANCE M395~415P54LM-BF-F3 delivers bifacial output at the same 415 W / 21.25% efficiency rating. On high-albedo surfaces (pale gravel, concrete, snow; albedo ≥0.25), bifacial panels capture an additional 5–15% energy from the rear side — a meaningful yield gap for ground-mount or flat-roof installations. ## About this series The JA Solar JAM54S30 390-415/MR series consists of panels based on half-cell technology, which significantly improve system performance in difficult lighting conditions. Thanks to the use of **Deep Blue 3.0 cell technology**, these modules offer higher energy conversion efficiency, which translates directly into a faster return on investment for owners of single-family homes and small businesses. The multi-busbar design minimizes the risk of micro-cracks and effectively reduces resistance losses, clearly distinguishing them from older solutions offered by competitors. The use of **Half-cut structure** ensures the panel works much more efficiently under partial shading, which is crucial on complex roof surfaces with dormers or chimneys. This product is ideal for investors looking for an optimal compromise between high power and a compact size, making installation easier in limited spaces. This series addresses the cell degradation problem thanks to high **resistance to the PID effect**, which guarantees stable electricity production for many decades of use. By choosing these modules, investors gain the assurance of stable operation even in extreme temperatures. It is a **versatile solution for the residential sector**, combining modern design with industrial durability, setting new standards in the mid-power module segment. An additional advantage is the **optimized cost of energy LCOE**, making this series one of the most cost-effective options currently available on the Polish photovoltaic market. ## Notable figures - Efficiency of 21.3% is 0.7pp above the \*\*PERC 400-450W\*\* median (20.6%) - At 212.5 W/m² power density, this panel generates 6.3 W/m² more per unit area than \*\*PERC 400-450W\*\* median (206.2 W/m²) - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - 19.5 kg weight - 2.5 kg lighter than \*\*PERC 400-450W\*\* median (22.0 kg), reducing installation effort - Ranked #8519 out of 14005 panels for efficiency in the database ## Questions ### Is the JA Solar JAM54S30 390-415/MR series still available for purchase? The JAM54S30 390-415/MR series has been discontinued by JA Solar. Units may still appear as remaining stock at distributors, but availability is limited and not guaranteed. Before purchasing, check with your supplier for current inventory levels and consider switching to a newer series from the same manufacturer. ### What warranty does the JA Solar JAM54S30 390-415/MR series come with? JA Solar provides a 12-year product warranty covering material and workmanship defects, along with a 25-year linear power output warranty. After 25 years of operation, the module is guaranteed to retain at least 84.8% of its initial rated power. These are industry-standard terms for a Tier 1 manufacturer and support a predictable return on investment over the system's lifetime. ### Does the half-cut cell design in the JAM54S30 series actually help with partial roof shading? Yes. The half-cut design splits each PERC cell into two smaller cells, limiting the impact of shading on one section from affecting the entire module's output. On roofs with chimneys, dormers, or antennas, the JAM54S30 series loses noticeably less energy than conventional full-cell modules. The panel uses 108 half-cut cells arranged in three independent bypass strings. ### Are the JAM54S30 415W panels suitable for a standard pitched roof installation? Yes. The module dimensions are 1722×1134×30 mm with a weight of 21.5 kg, which is well within typical residential installation parameters. Standard aluminum rail mounting systems and roof hooks are fully compatible. The compact size simplifies handling on the roof surface and installation in areas with limited working space. ### How does the JAM54S30 series perform in winter, at low temperatures and reduced irradiance? The JAM54S30 series has a power temperature coefficient of -0.35%/°C, meaning the module can exceed its rated output on cold, sunny days (e.g., at -10°C). The PERC Deep Blue 3.0 cell technology also maintains good efficiency under diffuse irradiance conditions typical of Central European winters. This series is well suited for year-round operation in a temperate climate. ### What is MBB technology in the JAM54S30 series and why does it matter? MBB (Multi Busbar) refers to the use of 11 thin busbars instead of the traditional 4-5 thick ones. More busbars shorten the current path within each cell, reducing resistive losses and lowering the risk of microcracks during transport or under mechanical load. The result is a higher module efficiency of up to 21.3% and improved long-term cell durability compared to older busbar configurations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/20230309022526341-434f136f5c98.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, +2.5 pp, +5 yr warranty | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | Cooler, +2.3 pp, +5 yr warranty | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, cooler, +2.3 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | Cooler, +2.3 pp, +5 yr warranty | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | Cooler, +2.2 pp, +5 yr warranty | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | Cooler, +2.2 pp, +5 yr warranty | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | Cooler, +2.2 pp, +5 yr warranty | | [JA Solar JAM54S31-380/MR](https://comparepv.com/panel/ja-solar-jam54s31-380-mr) | 380 W | -35 W, -1.8 pp | | [JA Solar JAM54S31-385/MR](https://comparepv.com/panel/ja-solar-jam54s31-385-mr) | 385 W | -30 W, -1.6 pp | | [JA Solar JAM54D30-390/MB/1500V](https://comparepv.com/panel/ja-solar-jam54d30-390-mb-1500v) | 390 W | Heavier, -1.4 pp, +5 yr warranty | | [JA Solar JAM54S31-390/MR](https://comparepv.com/panel/ja-solar-jam54s31-390-mr) | 390 W | -25 W, -1.3 pp | | [JA Solar JAM54D30-395/MB/1500V](https://comparepv.com/panel/ja-solar-jam54d30-395-mb-1500v) | 395 W | Heavier, -1.1 pp, +5 yr warranty | | [JA Solar JAM54S31-395/MR](https://comparepv.com/panel/ja-solar-jam54s31-395-mr) | 395 W | -20 W, -1.1 pp | | [JA Solar JAM54S30-400/MR](https://comparepv.com/panel/ja-solar-jam54s30-400-mr) | 400 W | -15 W, -0.8 pp | | [JA Solar JAM54D30-400/MB/1500V](https://comparepv.com/panel/ja-solar-jam54d30-400-mb-1500v) | 400 W | Heavier, -0.9 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/ja-solar-jam54s30-415-mr Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.