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JA Solar JAM54D40-465/LR
JA Solar Brand review

JAM54D40-465/LR

465 Wp N-type
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 6,780 of 14,005
Compare panels Datasheet PDF
Power (Wp)
465
Typical for its class
Efficiency (%)
23.30
Strong · top 15%
Density (Wp/m²)
232.7
Strong · top 15%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
22.0
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

5 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
Megawat Elektrohurt Poland 337.73 zł incl. VAT 726.30 zł/kWp In stock 8h ago Visit shop
Solar-EM Poland 338 zł incl. VAT 726.88 zł/kWp In stock 9h ago Visit shop
www.actec-solar.de Germany 78.90 € incl. VAT 169.68 €/kWp In stock 11h ago Visit shop
www.winkelman-zonnepanelen.nl Netherlands 79 € net 169.89 €/kWp In stock 11h ago Visit shop
www.4solar.cz Czechia 2 493 Kč incl. VAT 5 361.29 Kč/kWp In stock 9h ago Visit shop

Signals from the data

7 positive · 1 caution
Best for

Residential, commercial and hot-climate.

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.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 465 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.30 % Strong Segment median 22.52%
Vmpp · Impp 33.50 V · 13.88 A Operating point at max power
Voc · Isc 40.20 V · 14.65 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 22.0 kg Typical Typical · median 23.7 kg
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 83.1 % Equals 406 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by JA Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 465 Wp appear here. The rest cover the whole series.

n-type Monofacial Double Glass Module Linear Performance Warranty n-type Monofacial Double Glass Module Linear Performance Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
JA Solar JAM54D40-465/LR 465 W 23.30% -0.290 22.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +45 W, cooler, +1.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +30 W, cooler, +1.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +40 W, cooler, +1.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +25 W, cooler, +1.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +35 W, cooler, +1.2 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +35 W, cooler, +1.2 pp
NS-420MH-108 420 W 21.01% -0.290 24.5 kg -45 W, heavier, -2.3 pp
JAM54D41-430/LB 430 W 21.50% -0.290 22.0 kg -35 W, -1.8 pp
JAM54S40-435/LR 435 W 21.80% -0.290 20.0 kg -30 W, lighter, -1.5 pp
JAM54S40-440/LR 440 W 22.00% -0.290 20.0 kg -25 W, lighter, -1.3 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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