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JA Solar JAM54D41 455/LB
JA Solar Brand review

JAM54D41 455/LB

455 Wp N-type Bifacial 80%
ComparePV verdict

Solid all-round for its segment

Rank 8,516 of 14,005
Compare panels Datasheet PDF
Power (Wp)
455
Weak · bottom 22%
Efficiency (%)
22.80
Typical · median 22.52%
Density (Wp/m²)
227.7
Typical · median 225.2
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
22.0
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.52% Typical 2,714
Power density 227.7 225.2 Typical 2,888
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 48.4 49.5 Typical 2,220
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 2 caution
Best for

Residential, commercial and shaded-installations.

What owners get
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.

Trade-offs
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.

Notes from the database
  • At 22.8% efficiency, this panel is on par with typical N-type 450-500W modules
  • At 227.7 W/m² power density, roof space requirements are typical for N-type 450-500W panels
  • Temperature coefficient of -0.29%/°C matches the N-type 450-500W median
  • At 22.0 kg, this panel is 1.7 kg lighter than N-type 450-500W median (23.7 kg) - easier handling during installation
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 455 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Typical Segment median 22.52%
Vmpp · Impp 33.00 V · 13.79 A Operating point at max power
Voc · Isc 39.50 V · 14.56 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
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 398 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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
-
With bifacial gain
-

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
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
JA Solar JAM54D41 455/LB 455 W 22.80% -0.290 22.0 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +40 W, cooler, +2.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +50 W, cooler, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +35 W, cooler, +1.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +45 W, cooler, +1.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +45 W, cooler, +1.7 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +45 W, cooler, +1.7 pp
NS-420MH-108 420 W 21.01% -0.290 24.5 kg -35 W, heavier, -1.8 pp
JAM54D41-430/LB 430 W 21.50% -0.290 22.0 kg -25 W, -1.3 pp
JAM54S40-435/LR 435 W 21.80% -0.290 20.0 kg -20 W, lighter, -1.0 pp
JAM54S40-440/LR 440 W 22.00% -0.290 20.0 kg -15 W, lighter, -0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +55 W, cooler, +2.2 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 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.
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