--- title: "JA Solar JAM54D40-465/LR 465W Solar Panel - Specs & Review | ComparePV" description: "JA Solar JAM54D40-465/LR 465W solar panel: 5 shop offers from 337.73 zł. Specs: 23.30% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/ja-solar-jam54d40-465-lr" updated: 2026-10-07 --- # JA Solar JAM54D40-465/LR Efficiency leader, no clear weak spot 301 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM54D40-465/LR - **Series:** JAM54D40 LR - **Rated power:** 465 W - **Cell technology:** N-type ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [Megawat Elektrohurt](https://comparepv.com/go/1826) | Poland | 337.73 zł incl. VAT | 726.30 zł/kWp | In stock | Last read 7 Oct 03:26 | | [Solar-EM](https://comparepv.com/go/1380) | Poland | 338 zł incl. VAT | 726.88 zł/kWp | In stock | Last read 7 Oct 02:14 | | [www.actec-solar.de](https://comparepv.com/go/493663) | Germany | 78.90 € incl. VAT | 169.68 €/kWp | In stock | Last read 7 Oct 00:23 | | [www.winkelman-zonnepanelen.nl](https://comparepv.com/go/117194) | Netherlands | 79 € net | 169.89 €/kWp | In stock | Last read 7 Oct 00:38 | | [www.4solar.cz](https://comparepv.com/go/78107) | Czechia | 2 493 Kč incl. VAT | 5 361.29 Kč/kWp | In stock | Last read 7 Oct 02:38 | ## How it compares Compared against segment N-type 450-500 W (301 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 465 W | 470 W | Typical | | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,017 | | Power density | 232.7 | 225.2 | Strong - top 15% | 1,115 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 22.0 kg | 23.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,017 | | Power density | 232.7 | 225.2 | Strong - top 15% | 1,115 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 47.3 | 49.5 | Typical | 1,632 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.30% module efficiency** - Top 15% of the N-type 450-500 W segment, against a median of 22.52%. - **232.7 watts per square metre** - Top 15% of the N-type 450-500 W segment, against a median of 225.2. - **Best for:** Residential, commercial and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 465 W - **Efficiency:** 23.30 % - **Voltage at Pmax (Vmp):** 33.50 V - **Current at Pmax (Imp):** 13.88 A - **Open-circuit voltage (Voc):** 40.20 V - **Short-circuit current (Isc):** 14.65 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:** N-type - **Cell count:** 108 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 2.00 m2 - **Power density:** 232.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 83.1 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 406 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1017 of 14005 | | Power density | 1115 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1632 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon – PVEL 2025 Top Performer** - DeepBlue 4.0 Pro cells earned the Top Performer designation for the tenth time in the 2025 PV Evolution Labs Module Reliability Scorecard, plus a 'Very Good' rating from PV Magazine's independent module test. LID is minimized by N-type architecture, and post-year-1 annual degradation is approximately 0.35%/year — well below the P-type PERC benchmark of ~0.55%/year. - **Up to 23.8% efficiency – segment leader** - The series delivers module efficiency of 22.5–23.8%, matching the top peers in the 54-cell segment: Astronergy ASTRO N7s 2.0 (23.8%) and Sun Earth TITAN Dual Glass (23.8%), while outperforming LONGi Hi-MO X10 Explorer (max 23.3%). For rooftop installations with limited area, this translates directly into higher energy yield without adding modules. - **Temperature coefficient of -0.29%/°C** - A Pmax temperature coefficient of -0.29%/°C is meaningfully better than the -0.34 to -0.35%/°C typical of P-type PERC modules. At a module operating temperature of 65°C (common Central European summer), the real-world output advantage over PERC reaches approximately 1.5–2%, delivering additional kWh during peak production hours. - **30-year linear power warranty at ≥87.4%** - JA Solar guarantees ≥87.4% of nameplate power after 30 years under a linear degradation curve. This is one of the longest power warranty thresholds available in the 54-cell segment and is a key input to LCOE calculations for both residential prosumer and commercial PV projects. - **BNEF Tier 1 Q2 2026 – bankability** - JA Solar holds bankable manufacturer status on the BloombergNEF Q2 2026 Tier 1 list (42 global manufacturers), with a 100 GWp annual production capacity. Tier 1 standing is a prerequisite for project financing at most international lending institutions, reducing barriers to debt and lease structures for commercial-scale PV assets. ## Cons - **Product warranty 15 yrs vs. 25-yr industry standard** - The JAM54D40 LR series carries only a 15-year product warranty (manufacturing defects, mechanical integrity), whereas Tier-1 peers — including Trina Solar, Jinko Solar, Canadian Solar, REC Group, and QCells — routinely provide 25-year workmanship warranties. For externally financed commercial installations, the shorter warranty horizon may increase due diligence risk and required insurance coverage. ## About this series Photovoltaic panels from the JAM54D40 LR series are advanced modules made with n-type technology that redefine performance standards in the micro-installation and commercial systems sectors. The use of **n-type DeepBlue 4.0 Pro cells** allows for a significant reduction in light-induced degradation (LID), which directly translates into higher energy yields throughout the entire life cycle of the power plant. The **bifacial double glass** construction ensures not only exceptional mechanical resistance to extreme weather conditions but also enables the generation of additional power from reflected radiation reaching the back of the module. Thanks to **excellent temperature coefficients**, this series solves the problem of efficiency drops during summer heat, outperforming standard p-type solutions. This product is dedicated to investors for whom **maximizing self-consumption** on a limited roof area and a quick return on investment are key. Importantly, **SMBB (Super Multi-Busbar) technology** improves current flow and minimizes the risk of micro-cracks, distinguishing these panels from cheaper alternatives with lower performance standards. It is a choice for those focusing on innovations that guarantee stable and predictable yields for many decades, regardless of the level of sunlight or local ground conditions. ## Notable figures - At 23.3% efficiency, this panel is 0.8pp above typical \*\*N-type 450-500W\*\* modules (median: 22.5%) - 232.7 W/m² power density - 7.5 W/m² more than \*\*N-type 450-500W\*\* median (225.2 W/m²), more power per roof area - Temperature coefficient of -0.29%/°C matches the \*\*N-type 450-500W\*\* median - 22.0 kg weight - 1.7 kg lighter than \*\*N-type 450-500W\*\* median (23.7 kg), reducing installation effort - In the top 7% for efficiency among all N-type panels ## Questions ### What warranty does the JA Solar JAM54D40 LR come with? The JAM54D40 LR series comes with a 15-year product warranty and a 30-year linear power warranty. After 30 years of operation, the panel is guaranteed to retain at least 87.4% of its rated output. This is among the longest power warranties available on the consumer market, reflecting JA Solar's confidence in the long-term durability of its n-type DeepBlue 4.0 Pro cells. ### How do the n-type cells in the JAM54D40 LR differ from older p-type PERC panels? The n-type cells used in the JAM54D40 LR exhibit significantly lower light-induced degradation (LID), meaning the panel loses less power in its early years compared to standard p-type PERC modules. An additional advantage is a better temperature coefficient of -0.29%/°C, allowing the module to generate more energy during summer heat waves than a typical PERC panel rated at approximately -0.35%/°C. ### How many JA Solar JAM54D40 LR 475 Wp panels do I need for a typical residential system? For a single-family home consuming 4,000–5,000 kWh per year, 10–12 JAM54D40 LR 475 Wp modules are typically sufficient, resulting in a 4.75–5.7 kWp system. The exact number depends on your annual energy consumption, roof orientation, tilt angle, and local solar irradiance. A qualified installer should run an individual yield simulation for your site. ### How do the JAM54D40 LR panels perform during summer heat? The JAM54D40 LR series features a temperature coefficient of Pmax at -0.29%/°C, resulting in lower power losses at high temperatures compared to p-type modules (typically -0.35%/°C or worse). In practice, this translates to a higher energy yield on hot days — a key advantage for south-facing rooftops or installations in regions with intense summer irradiance. ### What is SMBB technology in the JAM54D40 LR panels and why does it matter? SMBB (Super Multi-Busbar) uses many thin busbars instead of a few thick ones to connect each cell. This shortens the current path inside the module, reduces resistive losses, and significantly improves resistance to microcracks caused by transportation stress or snow loading. The result is a more durable panel with stable energy output throughout its entire service life. ### Can the JA Solar JAM54D40 LR panels handle heavy snow loads and strong winds? Yes, the JAM54D40 LR series is certified to withstand snow loads up to 5,400 Pa and wind loads up to 2,400 Pa. These values far exceed requirements for typical residential installations, making the panels suitable even for mountain or coastal locations exposed to extreme weather conditions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/cf64c1ba049abeb-b2830a444ff5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +45 W, cooler, +1.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +30 W, cooler, +1.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +40 W, cooler, +1.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +25 W, cooler, +1.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +35 W, cooler, +1.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +35 W, cooler, +1.2 pp | | [JA Solar NS-420MH-108](https://comparepv.com/panel/ja-solar-ns-420mh-108) | 420 W | -45 W, heavier, -2.3 pp | | [JA Solar JAM54D41-430/LB](https://comparepv.com/panel/ja-solar-jam54d41-430-lb-1) | 430 W | -35 W, -1.8 pp | | [JA Solar JAM54S40-435/LR](https://comparepv.com/panel/ja-solar-jam54s40-435-lr) | 435 W | -30 W, lighter, -1.5 pp | | [JA Solar JAM54S40-440/LR](https://comparepv.com/panel/ja-solar-jam54s40-440-lr) | 440 W | -25 W, lighter, -1.3 pp | --- Source: https://comparepv.com/panel/ja-solar-jam54d40-465-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.