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Jolywood JW-HT120N-R3-490
Jolywood Brand review

JW-HT120N-R3-490

490 Wp TOPCon
ComparePV verdict

Strong in heat, needs the roof space

Rank 7,949 of 14,005
Compare panels Datasheet PDF
Power (Wp)
490
Strong · top 12%
Efficiency (%)
22.20
Typical · median 22.52%
Density (Wp/m²)
221.6
Weak · bottom 24%
Temp (%/°C)
-0.280
Strong · top 11%
Weight (kg)
24.0
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Jolywood JW-HT120N-R3 Light Series was designed to deliver high power density while maintaining practical mounting dimensions - these modules are based on N-type TOPCon cells, which maintain efficiency over the long term and offer stable performance under varying weather conditions. The Light version emphasizes versatility: the half-cut cell configuration improves tolerance to partial shading, and the bifacial design harnesses reflected light from the ground, boosting energy yield without requiring installation upgrades. The use of tempered glass and robust construction supports resistance to loads and environmental conditions, making them ideal for windy and snowy rooftops, as well as ground-mounted systems. This is an excellent choice for investors seeking to combine high energy yield in low-light conditions with reliable year-round performance - suitable for homes and businesses, as well as PV farms, carports, and public facilities.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.20% 22.52% Typical 5,817
Power density 221.6 225.2 Weak · bottom 24% 5,951
Temperature coefficient -0.280 -0.290 Strong · top 11% 1,309
Weight per kWp 49.0 52.2 Typical 2,666
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, commercial and shaded-installations.

Not ideal for

Roofs where every square metre has to count.

Strengths
-0.280 %/°C temperature coefficient

Top 11% of the TOPCon 450-500 W segment, against a median of -0.290.

Watch-outs
221.6 watts per square metre

Bottom 24% of the TOPCon 450-500 W segment, against a median of 225.2.

What owners get
N-type TOPCon – minimal LID degradation

N-type cells exhibit virtually no light-induced degradation (LID): first-year degradation is capped at <1.0% versus 2–3% in P-type PERC modules. Annual linear degradation is rated at 0.40%, yielding >87.4% of nameplate power after 30 years.

Module efficiency up to 23.1%

The top variant reaches 23.1% efficiency — on par with JA Solar JAM60S40 LR (23.0%) and Sunlike SKT510 (22.93%), and 1.9 percentage points above Trina Solar Vertex BSM (21.2%). This translates to higher energy yield per m² of roof area in space-constrained installations.

30-year linear power warranty

Jolywood guarantees >87.4% of initial power output after a full 30 years of operation. Many competing models in this power class offer a standard 25-year linear warranty, making this series more favorable in long-term LCOE calculations.

Low temperature coefficient Pmax (−0.28%/°C)

At −0.28%/°C, power losses on hot days are lower than typical P-type PERC modules rated at −0.34% to −0.35%/°C. At a peak module temperature of ~65°C, this translates to approximately 1.4 percentage points more retained power compared to PERC technology.

BNEF Tier-1 manufacturer – bankability

Jolywood (est. 2008) appears on the BloombergNEF bankable manufacturer list, confirming participation in at least six projects exceeding 10 MW financed by independent commercial banks. This facilitates third-party financing for utility-scale and commercial PV projects.

Trade-offs
Monofacial – no bifacial yield gain

The Light Series (is_bifacial: false) does not harvest light reflected from the ground. In ground-mount and flat-roof installations with light-colored surfaces, bifacial modules generate 5–15% additional energy. The direct peer comparable, JA Solar JAM60S40 LR, offers bifacial construction in the same 485–510 Wp power class.

12-year product warranty vs. 15 years at JA Solar

JA Solar JAM60S40 LR — a direct competitor with an identical power range (485–510 Wp) and similar efficiency (23.0%) — carries a 15-year product warranty. Jolywood's 12-year coverage is 3 years shorter, reducing the factory-defect protection window for system owners.

Notes from the database
  • At 22.2% efficiency, this panel is on par with typical TOPCon 450-500W modules
  • 221.6 W/m² power density is 3.6 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
  • Temperature coefficient of -0.28%/°C matches the TOPCon 450-500W median
  • In the top 42% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 490 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.20 % Typical Segment median 22.52%
Vmpp · Impp 36.92 V · 13.27 A Operating point at max power
Voc · Isc 42.98 V · 14.06 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1950×1134×30 mm · 2.21 m² of roof
Weight 24.0 kg Typical Typical · median 24.0 kg
Cells 120 · TOPCon Monocrystalline
Coefficient Pmax -0.280 %/°C Strong top 11% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 42 °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 428 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 490 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 I-V Characteristics At Different Temperatures I-V Characteristics At Different Temperatures 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
-0.280 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Jolywood JW-HT120N-R3-490 490 W 22.20% -0.280 24.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +20 W, cooler, +2.8 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.6 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +15 W, cooler, +2.5 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +2.3 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +10 W, cooler, +2.3 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, lighter, +2.3 pp
JW-HT120N-R3-485 485 W 21.90% -0.280 24.0 kg -0.3 pp
JW-HD120N-R3-495 495 W 22.40% -0.280 27.3 kg Heavier
JW-HD108N-R2-500 500 W 22.50% -0.280 27.3 kg +10 W, heavier, +0.3 pp
JW-HD120N-R3-500 500 W 22.60% -0.280 27.3 kg +10 W, heavier, +0.4 pp
JW-HD108N-R2-505 505 W 22.70% -0.280 27.3 kg +15 W, heavier, +0.5 pp
JW-HT120N-R3-505 505 W 22.80% -0.280 24.0 kg +15 W, +0.6 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +70 W, cooler, +2.6 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +65 W, cooler, +2.4 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +60 W, lighter, +2.2 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +50 W, cooler, +2.2 pp

Found 255 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 1350 panels of the same or similar size to this one, within ±50 mm. See them here Found 1469 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Jolywood JW-HT120N-R3 Light Series come with?
Jolywood provides a 12-year product warranty covering defects and workmanship, along with a 30-year linear power output warranty - one of the longer guarantees available for N-type modules. Over those 30 years, the panel retains a specified minimum percentage of its rated output following the degradation schedule. For residential and commercial projects, this is a key factor when calculating return on investment.
What is TOPCon technology and why does the JW-HT120N-R3 series use it?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture with a passivating contact layer that minimizes carrier recombination. In practice, it delivers a lower temperature coefficient (approx. -0.28%/°C) and better low-light efficiency than conventional PERC cells. The JW-HT120N-R3 series leverages TOPCon to maintain stable energy yield year-round - especially relevant in climates with frequent overcast conditions.
Are the Jolywood JW-HT120N-R3 panels suitable for a roof partially shaded by a chimney or dormer?
Yes. The half-cut cell layout (120 cells split into two independent electrical strings) limits power loss under partial shading. Shading one half of the panel does not shut down the entire module - the unshaded string continues to deliver current to the inverter. The Light Series is therefore a solid choice for rooftops with typical architectural obstructions.
How many Jolywood JW-HT120N-R3 panels do I need for a 10 kW system?
The top variant in this series is rated at 510 Wp. A 10 kW system requires approximately 20 panels (10,000 ÷ 510 ≈ 19.6, rounded up to 20 units). If you select a lower-wattage variant from the 485-510 Wp range, you may need 21 modules. The exact count depends on the system design and inverter MPPT configuration.
Is Jolywood a reliable manufacturer - is the JW-HT120N-R3 worth buying?
Jolywood holds Tier 1 status according to Bloomberg NEF, confirming financial bankability and consistent manufacturing standards. The China-based company specializes in N-type TOPCon technology and supplies cells to several European module brands. The JW-HT120N-R3 series is actively sold and backed by full manufacturer warranties.
What types of installations are the Jolywood JW-HT120N-R3 Light Series panels best suited for?
The Light Series is designed as a versatile module for a wide range of applications: pitched residential roofs, commercial and industrial rooftops, utility-scale PV farms, carports, and public-sector buildings. With up to 510 Wp per panel, it maximizes energy density on limited roof space, while the tempered glass construction and robust frame provide reliable resistance to snow and wind loads.
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