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Jinko Solar Brand review

JS555M144

555 Wp PERC
ComparePV verdict

Light for its output, short guarantee

Rank 9,989 of 14,129
Compare panels Datasheet PDF
Power (Wp)
555
Typical for its class
Efficiency (%)
21.48
Typical · median 21.29%
Density (Wp/m²)
214.8
Strong · top 20%
Temp (%/°C)
-0.340
Typical · median -0.350
Weight (kg)
27.0
Strong · 3.8 kg below median
Warranty (yrs)
25
Weak · bottom 24%

The Jinko Solar JS-PERC series is designed to genuinely increase energy yield under typical operating conditions - even when the weather is variable and sunlight is lower. The modules utilize mono PERC cells, which allow them to better "collect" light and operate more stably under weaker illumination. In practice, this means higher energy production in the morning, evening, and on cloudy days, as well as improved overall system profitability without the need to add more panels.

The JS-PERC series stands out for its focus on quality: multiple electroluminescence (EL) tests help detect microcracks and reduce the risk of power loss over time. Additionally, the module design supports lower losses in partially shaded conditions, which is important on roofs with chimneys, skylights, or trees nearby.

This series is particularly suitable for individuals and businesses that want predictable yields and durability - whether in residential or commercial installations, where energy cost and reliability are key factors.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.48% 21.29% Typical 8,217
Power density 214.8 212.9 Strong · top 20% 8,099
Temperature coefficient -0.340 -0.350 Typical 8,846
Weight per kWp 48.6 52.7 Strong · top 9% 2,391
Performance warranty 25 yrs 27 yrs Weak · bottom 24% 9,912
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

Owners who want a long output guarantee.

Strengths
48.6 kg per kWp

Top 9% of the PERC 550-600 W segment, against a median of 52.7. Ranked 2,391st in the whole database.

214.8 watts per square metre

Top 20% of the PERC 550-600 W segment, against a median of 212.9.

Watch-outs
25 year performance warranty

Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs.

What owners get
BNEF Tier-1 & PVEL Top Performer

JinkoSolar has maintained BNEF Tier-1 bankability status for over 8 consecutive quarters and earned PVEL Top Performer recognition across all 7 reliability categories in the 2025 PV Module Reliability Scorecard - for the 11th year in a row. This is one of the strongest combined signals of financial and technical credibility in the market.

Up to 21.7% efficiency - above all peer comparables

Peak module efficiency of 21.7% exceeds every listed peer: Shinson S-Max (21.48%), Phono Solar Bifacial Twinplus (21.48%), and Boviet VEGA (21.3%). Within the mono PERC technology class, this positions the JS-PERC Series at the top of the segment.

Broad power range: 330-555 Wp across 9 variants

Nine variants span both residential prosumer systems and commercial or utility-scale arrays. A unified brand and PERC technology stack across the full range simplifies BoS standardization and service procurement.

Multiple in-process EL testing

Multiple electroluminescence (EL) inspections during manufacturing detect microcracks before shipment. This is above-standard QC practice in mass-production PERC, reducing the risk of early in-field power degradation.

Trade-offs
P-type PERC: higher LID degradation

P-type PERC cells exhibit LID of 1.5-3% in year one and annual degradation of ~0.6-0.8% vs ~0.4-0.5% for N-type TOPCon (PVEL 2025 dataset). Over 25 years, PERC modules retain ~82-84% of nameplate power, while N-type TOPCon retains 85-87%. The warranted floor of 83.1% at year 25 leaves a very narrow margin.

Monofacial only - no bifacial option

The JS-PERC Series is strictly monofacial (is_bifacial: false). The direct competitor Phono Solar Bifacial Twinplus (up to 555 Wp, 21.48% efficiency) adds 5-15% energy yield from reflected irradiance. On installations with high-albedo surfaces (gravel ballast, snow, white TPO membrane), this represents a real missed yield opportunity.

Notes from the database
  • At 21.5% efficiency, this panel is on par with typical PERC 550-600W modules
  • Power density of 214.8 W/m² matches the PERC 550-600W median
  • Temperature coefficient of -0.34%/°C matches the PERC 550-600W median
  • At 27.0 kg, this panel is 3.8 kg lighter than PERC 550-600W median (30.8 kg) - easier handling during installation
  • Ranked #8217 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 555 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.48 % Typical Segment median 21.29%
Vmpp · Impp 42.31 V · 13.12 A Operating point at max power
Voc · Isc 49.80 V · 14.10 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×35 mm · 2.58 m² of roof
Weight 27.0 kg Strong Strong · 3.8 kg below median
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.260 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Performance warranty 25 years Weak bottom 24% · median 27 yrs
End-of-warranty output 84.8 % Equals 455 W guaranteed
Degradation 2.00 % First year

Datasheet charts

Open datasheet PDF

Measured curves published by Jinko Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 555 Wp appear here. The rest cover the whole series.

JS Solar's Performance Warranty JS Solar's Performance Warranty Whole series I-V Curve (varying irradiance, cell temp. = 45°C) I-V Curve (varying irradiance, cell temp. = 45°C) 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
-0.340 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Jinko Solar JS555M144 555 W 21.48% -0.340 27.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +3.5 pp, +5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, +3.3 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg -50 W, cooler, +3.2 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg -50 W, cooler, +3.2 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.1 pp, +5 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, lighter, +2.9 pp
JKM525M-72HL4-TV 525 W 20.36% -0.350 28.9 kg -30 W, -1.1 pp, +5 yr warranty
JS182MHC144-525 525 W 20.31% -0.350 26.5 kg -30 W, -1.2 pp
JKM530M-72HL4-TV 530 W 20.55% -0.350 28.9 kg -25 W, -0.9 pp, +5 yr warranty
JS182MHC144-530 530 W 20.51% -0.350 26.5 kg -25 W, -1.0 pp
JKM535M-72HL4-(V)-F3-EN 535 W 20.71% -0.350 28.0 kg -20 W, heavier, -0.8 pp
JKM535M-72HL4-BDVP 535 W 20.75% -0.350 34.3 kg Heavier, -0.7 pp, +5 yr warranty
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +90 W, cooler, +3.5 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +85 W, cooler, +3.3 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +80 W, cooler, +3.1 pp

Found 2327 panels of the same or similar size to this one, within ±10 mm. See them here Found 2369 panels of the same or similar size to this one, within ±25 mm. See them here Found 2383 panels of the same or similar size to this one, within ±50 mm. See them here Found 2548 panels of the same or similar size to this one, within ±100 mm. See them here

About the JS-PERC SERIES series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What is the power output warranty for Jinko Solar JS-PERC SERIES panels?
The Jinko Solar JS-PERC SERIES comes with a 25-year linear power output warranty, with annual degradation capped at 0.55%. A separate 12-year product warranty covers material and workmanship defects. These are standard Tier 1 warranty terms from Jinko Solar, confirming the manufacturer's long-term after-sales reliability.
Do Jinko Solar JS-PERC SERIES panels perform well on cloudy days and in low-light conditions?
Yes, the mono PERC cells used in the JS-PERC SERIES respond better to diffuse and low-intensity light than standard polycrystalline cells. In practice this means higher energy output in the morning, in the evening, and on overcast days. The annual energy yield from a JS-PERC SERIES system is measurably higher even in regions with variable irradiance, with no need to add extra panels.
What is PERC technology and why should I choose Jinko Solar JS-PERC SERIES?
PERC, or Passivated Emitter and Rear Cell, is a cell technology where a passivation layer on the rear surface reflects light back into the cell for a second absorption pass. The mono PERC cells in the JS-PERC SERIES achieve higher efficiency than standard monocrystalline modules and deliver better output at reduced irradiance, translating into real financial gains without increasing the installation footprint.
Is Jinko Solar JS-PERC SERIES suitable for a roof partially shaded by a chimney or trees?
The JS-PERC SERIES features a design that reduces partial shading losses, which is especially relevant on roofs with chimneys, dormers, or nearby trees. Multiple EL (electroluminescence) tests during production minimize the risk of microcracks that can amplify shading effects. For severe or persistent shading, adding power optimizers or microinverters is still advisable.
What is the maximum power of a JS-PERC SERIES panel and how many modules do I need for a home installation?
The maximum rated power of a Jinko Solar JS-PERC SERIES module is 555 Wp. For a typical residential system in the 6-10 kWp range, you would need between approximately 11 and 19 panels. The high per-panel wattage means fewer modules for the same system size, simplifying installation and reducing racking and BoS costs.
Are Jinko Solar JS-PERC SERIES panels bifacial?
No, Jinko Solar JS-PERC SERIES modules are monofacial and capture light only from the front side. They do not generate additional power from ground-reflected irradiance. This is perfectly adequate for typical rooftop installations where rear-side gain would be negligible. Bifacial configurations are generally advantageous only in ground-mount or elevated systems with highly reflective surfaces.
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