Strong in heat, heavy for its output
The Jinko Solar JS-PERC Bifacial (Dual Glass) 535-550W series is designed to maximize energy yield in situations where every square meter and long-term stability are crucial. A key advantage is the glass-glass construction, which provides better protection for the laminate against moisture, UV radiation, and temperature fluctuations - making these modules a good choice even for installations exposed to harsher environmental conditions.
The use of monocrystalline PERC p-type bifacial cells allows not only the use of direct light, but also reflected light from the ground, which provides additional yield in ground-mounted, flat roof, and other installations where a bright, reflective environment can be created. In practice, this series solves the problem of reduced production in less ideal conditions thanks to excellent performance in diffuse light and higher resistance to degradation factors.
This is a proposal for investors who expect higher production from the same surface area and greater durability than in typical modules with a film on the back.
Ranking
Signals from the data
Commercial.
Weight-limited structures.
Top 13% of the PERC 500-550 W segment, against a median of -0.350.
Bottom 18% of the PERC 500-550 W segment, against a median of 53.0.
Two tempered glass laminates instead of a polymer backsheet dramatically reduce moisture ingress and UV-induced encapsulant degradation. This makes the modules well-suited for high-humidity environments, coastal installations, and agro-PV applications where backsheet-based modules are prone to accelerated delamination.
Bifacial PERC cells capture light reflected from the ground, delivering a real-world energy gain of 5-25% depending on ground albedo (light gravel/white roofing membrane: ~15-25%; grass: ~5-10%). On ground-mount and flat-roof installations with a reflective surface, the bifacial gain is significant at no additional BoS cost.
Jinko covers this series with a 30-year linear power warranty - exceeding many PERC contemporaries limited to 25 years. The guaranteed maximum annual degradation is 0.55%, corresponding to ~84% of nameplate power remaining after 30 years.
JinkoSolar ranked #1 in Bloomberg NEF's 2024 PV Module Bankability Survey - the only manufacturer to achieve a 100% bankability score among 66 assessed companies, and Tier-1 for the 10th consecutive year. Bankable status means lenders accept these modules without additional credit enhancements, directly reducing project LCOE.
Peak module efficiency of 21.29% is essentially on par with direct PERC peers from the same era: Goldi Solar GS10-B144-TF (21.3%), IBC Solar 182M Half Cell (21.28%), S-Energy SL65-72BGJ (21.3%). The series does not concede power density to comparable competition.
Jinko Solar ended production of this series in 2023. New module supply is limited to remaining warehouse stock, and warranty claim support (replacements, service) may become increasingly difficult over time. For installations designed for a 25-30 year lifespan, this represents material supply-chain risk compared to actively produced series such as the Tiger Neo (N-type).
P-type PERC cells degrade at 0.45-0.55% per year with a first-year LID of 1-3%, while N-type TOPCon modules degrade at 0.30-0.40%/year with LID ≈ 0.2-0.5%. After 25 years, PERC retains roughly 84-86% of rated power versus 88-92% for TOPCon - a 4-6 percentage-point gap that compounds into meaningfully lower cumulative energy yield over a full project lifetime.
- Efficiency of 20.9% matches the PERC 500-550W median
- Power density of 209.0 W/m² matches the PERC 500-550W median
- At -0.34%/°C, hot weather performance is typical for PERC 500-550W panels
- Weight of 32.0 kg is 3.7 kg above PERC 500-550W median (28.3 kg) - verify structural support
- 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces
Specifications
Datasheet charts
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 540 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
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 Bifacial (Dual Glass) 535–550W series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.