- At 23.5% efficiency, this panel is 1.0pp above typical TOPCon 450-500W modules (median: 22.5%)
- Power density of 232.7 W/m² packs 7.5 W/m² more into the same footprint vs TOPCon 450-500W median (225.2 W/m²)
- At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
- 19.3 kg weight - 4.7 kg lighter than TOPCon 450-500W median (24.0 kg), reducing installation effort
- Ranked #501 out of 11672 panels for efficiency in the database
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Series JAT54S40 LR (n-type Monofacial Module) 6 variants
JA Solar JAT54S40 LR series modules are monofacial solar panels based on N-type TOPCon cells, designed for stable energy production in real rooftop conditions. The key advantage is their very low LID degradation, ensuring the installation maintains high efficiency for a longer period without the typical drop-off after commissioning. In practice, this means more predictable yields and better profitability throughout the system's lifespan.
Another notable feature is the improved temperature coefficient, which minimizes power losses on hot days – particularly important for dark rooftops and installations with poor ventilation. The modules utilize the GFI (gapless) structure, supporting efficient surface utilization and an aesthetic appearance. An additional benefit is optimized performance under low-light conditions, which aids during transitional periods and light cloud cover.
This is an excellent choice for single-family homes, multi-family buildings, and commercial projects, where durability, reliable performance, and high workmanship standards matter.
Electrical Parameters (STC)
| Nominal Power (Pmax) | 465 Wp |
| Module Efficiency | 23.50% |
| Voltage at Max Power (Vmpp) | 34.61 V |
| Current at Max Power (Impp) | 13.45 A |
| Open Circuit Voltage (Voc) | 40.88 V |
| Short Circuit Current (Isc) | 14.78 A |
| Max System Voltage | 1500 V |
Temperature Coefficients
| Temp. Coeff. Pmax | -0.260%/°C |
| Temp. Coeff. Voc | -0.220%/°C |
| Temp. Coeff. Isc | 0.050%/°C |
| NOCT | 45°C |
Cell Technology
| Cell Type | Monocrystalline |
| Cell Count | 108 |
| Bifacial | No |
| Bifaciality Factor | - |
Dimensions & Weight
| Length | 1762 mm |
| Width | 1134 mm |
| Height | 30 mm |
| Weight | 19.3 kg |
| Area | 2.00 m² |
| Power Density | 232.7 Wp/m² |
Warranty
| Product Warranty | 15 years |
| Performance Warranty | 30 years |
| End-of-Warranty Output | 83.5% |
| First Year Degradation | 1.00% |
| Annual Degradation | 0.55%/year |