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Jolywood Brand review

JW-HD108N-R2-505

505 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, heavy for its output

Rank 4,170 of 14,005
Compare panels Datasheet PDF
Power (Wp)
505
Typical for its class
Efficiency (%)
22.70
Typical · median 22.73%
Density (Wp/m²)
227.2
Typical · median 227.4
Temp (%/°C)
-0.280
Strong · top 10%
Weight (kg)
27.3
Weak · bottom 22%
Warranty (yrs)
30
Typical · median 30 yrs

The Jolywood JW-HD108N-R2 Black Series are full-black modules designed for maximum energy yield where both performance and roof aesthetics matter. Using N-type TOPCon cells helps reduce typical power losses over time - a tangible benefit for investors seeking sustained high output over long years, not just during the first season. The bifacial construction harnesses reflected light, supporting higher energy yields particularly when installed on light surfaces, flat roofs, and ground-mounted systems.

In practice, this series addresses two common challenges: limited installation space and production drops under demanding conditions. Thanks to double glazing, the modules are ready for operation in high-humidity environments and heavy-duty applications, while the full-black appearance makes them easy to integrate with modern buildings. This is an excellent choice for premium homes, businesses, and installations demanding high reliability and refined visual appeal.

Ranking

432 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 22.73% Typical 3,307
Power density 227.2 227.4 Typical 3,238
Temperature coefficient -0.280 -0.290 Strong · top 10% 1,309
Weight per kWp 54.1 52.4 Weak · bottom 22% 8,277
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 3 caution
Best for

Residential and commercial.

Not ideal for

Weight-limited structures.

Strengths
-0.280 %/°C temperature coefficient

Top 10% of the TOPCon 500-550 W segment, against a median of -0.290. Ranked 1,309th in the whole database.

Watch-outs
54.1 kg per kWp

Bottom 22% of the TOPCon 500-550 W segment, against a median of 52.4.

What owners get
Zero LID & low temperature coefficient

N-type TOPCon cells eliminate Light Induced Degradation (LID) inherent to P-type PERC. The Pmax temperature coefficient of -0.280%/°C translates to measurably higher summer energy yield compared to standard PERC modules (-0.35%/°C), improving real-world annual kWh output.

Up to 23.6% efficiency — top of segment

The 525 Wp variant reaches 23.6% module efficiency, matching the Jinko Tiger Neo 54HL4M-BDV (23.61%) and outperforming the VSUN N-132MH-BB (22.11%). The 6-variant lineup spanning 500–525 Wp provides flexibility for roof-area-constrained system design.

30-year linear power warranty (≥87.4%)

Jolywood guarantees at least 87.4% of rated power after 30 years. Most Tier-1 peers (Trina, JA Solar) offer 25-year warranties degrading to approximately 84.8%, making this series more favorable for LCOE calculations over long investment horizons.

Bifacial dual-glass — up to +25% rear-side gain

The bifacial design with 2.0/2.0 mm dual-glass construction captures light reflected from the ground surface. The manufacturer rates bifacial gain at up to +25% under favorable conditions (high-albedo surface, ground-mount or flat roof with adequate clearance). Dual-glass also improves PID resistance and moisture durability in coastal or industrial environments.

BNEF Tier-1 Q2 2026 + Kiwa PVEL Top Performer (4 consecutive years)

Jolywood is listed on the BNEF Tier-1 bankable manufacturer list for Q2 2026, confirming eligibility for independent commercial bank financing on utility-scale projects. Four consecutive Kiwa PVEL Top Performer Module Scorecard recognitions provide third-party evidence of consistent manufacturing quality and below-average field degradation risk.

Trade-offs
Limited brand presence in Poland

Jolywood has a single official distributor in Poland (Łódź), while Jinko Solar, Longi, and Trina Solar maintain extensive multi-tier distribution and service networks in the country. For commercial installations with SLA requirements, longer RMA response times represent a real operational risk.

27.3 kg module weight — structural constraint

The dual-glass construction results in a module weight of 27.3 kg (1960×1134×30 mm), approximately 25–30% heavier than comparable single-glass / backsheet modules (~20–22 kg). Large rooftop installations on older or industrial buildings may require additional structural load calculations, adding engineering cost to the BoS budget.

Notes from the database
  • Efficiency of 22.7% matches the TOPCon 500-550W median
  • Power density of 227.2 W/m² matches the TOPCon 500-550W median
  • Temperature coefficient of -0.28%/°C matches the TOPCon 500-550W median
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • In the top 24% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 505 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Typical Segment median 22.73%
Vmpp · Impp 33.68 V · 14.99 A Operating point at max power
Voc · Isc 39.23 V · 15.84 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1960×1134×30 mm · 2.22 m² of roof
Weight 27.3 kg Weak Weak · bottom 22%
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 441 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Jolywood in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 505 Wp appear here. The rest cover the whole series.

Linear Performance Warranty Linear Performance Warranty Whole series I-V Characteristics At Different Irradiations I-V Characteristics At Different Irradiations Whole series P-V Characteristics At Different Irradiations P-V Characteristics At Different Irradiations 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
-0.280 %/°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
Jolywood JW-HD108N-R2-505 505 W 22.70% -0.280 27.3 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +2.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +2.0 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +50 W, lighter, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +1.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +1.8 pp
JW-HT120N-R3-485 485 W 21.90% -0.280 24.0 kg -20 W, lighter, -0.8 pp
JW-HT120N-R3-490 490 W 22.20% -0.280 24.0 kg -15 W, lighter, -0.5 pp
JW-HD120N-R3-495 495 W 22.40% -0.280 27.3 kg -10 W, -0.3 pp
JW-HD108N-R2-500 500 W 22.50% -0.280 27.3 kg Very close match
JW-HD120N-R3-500 500 W 22.60% -0.280 27.3 kg Very close match
JW-HT120N-R3-505 505 W 22.80% -0.280 24.0 kg Lighter
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +55 W, lighter, +2.1 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +45 W, lighter, +1.7 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +35 W, lighter, +1.7 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +35 W, lighter, +1.7 pp

Found 488 panels of the same or similar size to this one, within ±10 mm. See them here Found 508 panels of the same or similar size to this one, within ±25 mm. See them here Found 776 panels of the same or similar size to this one, within ±50 mm. See them here Found 1471 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is N-type TOPCon technology in the Jolywood JW-HD108N-R2 series and why does it matter?
The N-type TOPCon cells in the JW-HD108N-R2 deliver lower annual degradation than conventional P-type PERC cells. The module achieves efficiency of approximately 22.5–23.6% and a low temperature coefficient of Pmax at just -0.28%/°C, reducing output losses on hot days. In practice, this means measurably more kilowatt-hours per year throughout the system's lifetime compared to previous-generation technology.
What warranty does the Jolywood JW-HD108N-R2 Black Series carry?
The JW-HD108N-R2 series comes with a 25-year product warranty and a 30-year linear power warranty. After 30 years the manufacturer guarantees at least 87.4% of the module's rated output. This is one of the longest warranty coverages available on the market, directly reducing investment risk and improving LCOE calculations for long-term energy projects.
What additional energy yield does the bifacial design of the JW-HD108N-R2 provide?
Thanks to its bifacial glass-glass construction, the JW-HD108N-R2 harvests light reflected from the ground, rooftop membrane, or surrounding surfaces. The manufacturer rates the bifacial gain at up to +25% compared to a monofacial module. The best results are achieved on flat roofs with white TPO or PVC membranes, light-colored gravel ballast, and ground-mounted or tracking systems.
Are the full-black Jolywood JW-HD108N-R2 panels suitable for a pitched roof with dark tiles?
Yes, the JW-HD108N-R2 series is compatible with standard rail-based racking systems designed for pitched roofs. The all-black aesthetic — black frame, black cells, black glass — blends seamlessly with dark ceramic or bitumen tiles, making it a preferred choice for premium residential builds. At 1960×1134 mm and approximately 27.3 kg, the modules require a roof structure rated for the corresponding static and dynamic loads.
How do Jolywood JW-HD108N-R2 modules perform in winter and harsh weather conditions?
The glass-glass construction provides strong resistance to moisture ingress, rapid thermal cycling, and snow loads. The modules operate across a temperature range of -40°C to +85°C and feature an IP68-rated junction box. The low temperature coefficient of Pmax (-0.28%/°C) also limits output losses during summer heat waves compared to standard P-type PERC panels.
Is Jolywood a reliable manufacturer and is the JW-HD108N-R2 Black Series still available for purchase?
Jolywood holds Tier 1 manufacturer status according to BNEF, confirming full bankability and established financial stability. The JW-HD108N-R2 Black Series remains in active commercial availability and is distributed through authorized partners across Europe. We recommend verifying stock for the specific wattage variant (up to 525 Wp) with your local distributor before placing an order.
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