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JA Solar JAM60D42-535/LB
JA Solar Brand review

JAM60D42-535/LB

535 Wp TOPCon Bifacial 80%
ComparePV verdict

Solid all-round for its segment

Rank 5,507 of 14,005
Compare panels Datasheet PDF
Power (Wp)
535
Strong · top 10%
Efficiency (%)
22.90
Typical · median 22.73%
Density (Wp/m²)
228.7
Typical · median 227.4
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
28.8
Typical · median 27.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The JA Solar JAM60D42 LB series is designed to maximize energy yield in real-world conditions, not just in laboratory tests. These double-glass and bifacial modules can utilize light arriving not only from the front but also from the rear (e.g., from a light-colored surface, facade, or roof reflections). In practice, this means higher energy production from the same installation area, which is crucial where every square meter counts.

The key advantage of this series is the N-type TOPCon cell technology, which helps minimize degradation-related losses over time and improves performance under low-light conditions. Additionally, the applied Anti-Glare coating supports installation in glare-sensitive locations, such as near residential buildings.

The JAM60D42 LB is ideal for residential rooftops, multi-family buildings, as well as commercial and industrial facilities - especially where you need stable power generation, robust construction, and a higher energy yield compared to standard mono modules.

Ranking

432 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.90% 22.73% Typical 2,359
Power density 228.7 227.4 Typical 2,451
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 53.8 52.4 Typical 7,892
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

3 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
Solar-EM Poland 399 zł incl. VAT 745.80 zł/kWp In stock 17h ago Visit shop
Solmix Poland 452.42 zł incl. VAT 845.64 zł/kWp In stock 18h ago Visit shop
www.jbsolar.nl Netherlands 92.50 € net 172.90 €/kWp In stock 16h ago Visit shop

Signals from the data

5 positive · 2 caution
Best for

Residential and commercial.

What owners get
Module efficiency 22.2–23.3% — clear peer advantage

The JAM60D42 LB series achieves module efficiency of 22.2–23.3%, outperforming direct comparables by 1.0–2.2 pp: Waaree ARKA Series (21.17%), S-Energy SE65-72BGJ (21.1%), and Emmvee Pearl (21.1%). In practice, this translates to higher energy yield per unit roof area — critical for space-constrained rooftop projects.

N-type TOPCon — lower degradation, better Tcoef

N-type TOPCon cells degrade at 1% in year one and 0.4%/year thereafter, retaining ~87.4% of rated power after 30 years. By comparison, PERC cells typically suffer 2% first-year LID and 0.55%/year degradation, reaching ~84.8% after 25 years. The temperature coefficient of Pmax is −0.29%/°C, improving summer yield vs. PERC (typically −0.34%/°C).

80% bifaciality ±5% — rear-side energy gain

A bifaciality factor of 80% (±5%) means the rear surface produces up to 80% of the front-side power. With adequate ground albedo (white TPO membrane, gravel, snow), the system can gain 5–20% additional annual energy with no increase in footprint. The double-glass construction protects the rear surface from moisture ingress and PID-related degradation.

BNEF Tier 1 manufacturer — bankability assured

JA Solar has maintained BNEF Tier 1 status continuously and ranks among the world's largest PV manufacturers (production capacity exceeding 100 GW/year). Tier 1 status requires non-recourse financing by at least six independent banks — essential for bankability in C&I and utility-scale projects. The company has operated since 2005, confirming long-term operational stability.

30-year linear power warranty

The manufacturer guarantees power output for 30 years at a 0.4%/year degradation rate post year one, a standard for JA Solar's N-type TOPCon lineup. Peers using PERC technology (e.g., Waaree ARKA, Emmvee Pearl) typically offer 25-year power warranties, meaning this series provides five additional years of warranty coverage for the same installation.

Trade-offs
Module weight 28.8 kg — higher roof load

The double-glass construction raises module weight to 28.8 kg (dimensions 2063×1134×30 mm), while comparable glass/backsheet modules in the 520–545 Wp class typically weigh 22–25 kg. The 4–7 kg per-module difference may necessitate additional structural assessment or reinforced racking, particularly for residential rooftop installations on older buildings.

12-year product warranty — below premium segment

All six variants in the series carry a 12-year workmanship (product) warranty. Flagship TOPCon lines from premium-tier competitors (e.g., Jinko NEOstar, LONGi Hi-MO 7) offer 15–25 year product warranties. For installations planned over a 20+ year horizon, this gap may represent elevated service risk in long-term financial models.

Notes from the database
  • Efficiency of 22.9% matches the TOPCon 500-550W median
  • At 228.7 W/m² power density, roof space requirements are typical for TOPCon 500-550W panels
  • At -0.29%/°C, hot weather performance is typical for TOPCon 500-550W panels
  • Weight of 28.8 kg is 1.8 kg above TOPCon 500-550W median (27.0 kg) - verify structural support
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface

Specifications

Open datasheet PDF
Nominal power (Pmax) 535 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.90 % Typical Segment median 22.73%
Vmpp · Impp 37.03 V · 14.45 A Operating point at max power
Voc · Isc 44.13 V · 15.31 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2063×1134×30 mm · 2.34 m² of roof
Weight 28.8 kg Typical Typical · median 27.0 kg
Cells 120 · TOPCon 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 -0.250 · 0.045 %/°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 468 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 535 Wp appear here. The rest cover the whole series.

Linear Performance Warranty (n-type Bifacial Double Glass Module vs. Standard Module) Linear Performance Warranty (n-type Bifacial Double Glass Module vs. Standard Module) 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
-
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 JAM60D42-535/LB 535 W 22.90% -0.290 28.8 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +2.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg -40 W, lighter, +1.9 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +1.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +1.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +1.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg -45 W, lighter, +1.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +1.6 pp
JAM60D42-520/LB 520 W 22.20% -0.290 28.8 kg -15 W, -0.7 pp
JAM60D42-525/LB 525 W 22.40% -0.290 28.8 kg -10 W, -0.5 pp
JAM60D42-530/LB 530 W 22.70% -0.290 28.8 kg Very close match
JAM60D42-540/LB 540 W 23.10% -0.290 28.8 kg +0.2 pp
JAM60D42-545/LB 545 W 23.30% -0.290 28.8 kg +10 W, +0.4 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, lighter, +1.5 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg Cooler, lighter, +1.4 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg Cooler, lighter, +1.3 pp
JKM540-54QL6-DV-F1-EU 540 W 24.05% -0.260 27.5 kg Cooler, lighter, +1.2 pp

Found 13 panels of the same or similar size to this one, within ±10 mm. See them here Found 21 panels of the same or similar size to this one, within ±25 mm. See them here Found 415 panels of the same or similar size to this one, within ±50 mm. See them here Found 887 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What does N-Type TOPCon technology in the JA Solar JAM60D42 LB offer compared to PERC?
The N-Type TOPCon cells in the JAM60D42 LB series eliminate a significant portion of the defects inherent to P-Type PERC, resulting in lower power degradation — approximately 0.4% per year after year one. The Pmax temperature coefficient of -0.29 %/°C means less power loss on hot days. Over the full 30-year system lifetime, this translates into measurably higher total energy yield compared to conventional PERC modules of the same nameplate wattage.
How much more energy do the bifacial JAM60D42 LB panels produce compared to standard monofacial modules?
The JAM60D42 LB modules feature a transparent rear glass that captures light reflected from the ground, roof surface, or facade. With a bifaciality factor of approximately 70%, JA Solar reports a bifacial gain of 5–25% depending on installation conditions. In real-world scenarios with good ground albedo — such as a white roofing membrane or light-colored gravel — the additional energy yield typically ranges from 8–15% above a comparable monofacial module's nameplate output.
What warranty does the JA Solar JAM60D42 LB come with and what does it cover?
JA Solar provides a 12-year product warranty covering defects in materials and workmanship, along with a 30-year linear power warranty. After 30 years, the module is guaranteed to retain at least 87.4% of its nominal power. As a BloombergNEF Tier 1 manufacturer, JA Solar has the financial standing to back these long-term commitments, making the warranty practically enforceable over the entire coverage period.
How heavy is the JAM60D42 LB panel and is it suitable for a typical residential pitched roof?
The JAM60D42 LB measures 2063 × 1134 × 30 mm and weighs approximately 28.8 kg — heavier than older single-glass modules primarily because of the double-glass construction. Most residential pitched roofs with standard timber or concrete structure can handle this load without issues. For older or non-standard buildings, a structural assessment by a qualified engineer is recommended before installation.
Do JA Solar JAM60D42 LB panels perform well in winter and under overcast conditions?
Yes, N-Type TOPCon technology delivers noticeably better low-light performance than PERC cells, improving output on overcast or hazy days. The low Pmax temperature coefficient (-0.29 %/°C) also means less power loss on cold, clear winter days — the module can even slightly exceed its nameplate output in those conditions. Together, these characteristics produce higher annual energy yield than the 545 Wp nameplate rating alone implies.
Is the JAM60D42 LB suitable for installation near residential buildings, and how effective is the Anti-Glare coating?
Yes, the JAM60D42 LB series includes an Anti-Glare front glass coating that diffuses specular reflections, making it suitable for installations near roads, airports, or residential neighborhoods where local regulations may restrict reflected glare. The modules are rated for system voltages up to 1500 V DC, ensuring broad compatibility with a wide range of string inverters and power optimizers available on the market.
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