JA Solar JAM54D40-465/LB Solar Panel

Description

The JAM54D40-465/LB model from Tier-1 manufacturer JA Solar is a high-efficiency monocrystalline bifacial photovoltaic module from the premium DeepBlue 4.0 Pro series. Thanks to the combination of advanced N-type (TOPCon) cell technology and a glass rear surface (Double Glass), this panel generates energy on both sides, making it an ideal solution for modern ground-mounted, rooftop, and commercial solar power plants with maximum payback.

Why a Bifacial Design?

The main feature of this panel is an active rear side protected by 1.6 mm tempered glass instead of a standard plastic backsheet.

• Additional Generation from Albedo: The panel absorbs light reflected from the ground, roof, or nearby surfaces (albedo effect). Depending on the type of surface beneath the panels, the bifacial design provides an extra 5% to 25% of generation on top of the rated 465 W.

• Best Surface Types for Maximum Effect:

  • Light-colored PVC membrane or flat roof — up to 10–15% gain.

  • Light-colored gravel or concrete beneath a ground-mounted structure — up to 15–18% gain.

  • Snow cover in winter — gives the maximum reflection effect with a gain of up to 25%.

Technological Advantages of the Model

• Advanced N-Type (TOPCon) Technology: N-type cells are practically immune to initial degradation (LID effect) and perform better in low-light conditions (at dawn, dusk, and in cloudy weather).

• Double Glass (Glass-Glass) Construction: The use of two layers of tempered glass (1.6 mm front and 1.6 mm back) guarantees unprecedented mechanical strength, complete sealing, and protection of the silicon wafers from microcracks, ammonia, salt, and moisture.

• Minimal Temperature Coefficient (-0.29%/°C): On hot summer days, when standard panels lose power due to overheating, the JAM54D40-465/LB performs much more stably, maintaining high efficiency.

• Black Frame Aesthetics: The stylish black anodized 30 mm frame makes it easy to integrate the panels into modern rooftop installations on private homes.

Installation Features We Take Into Account in Practice

1. Shading Under the Structure: Since the rear side of the panel must remain open to light, mounting rails should not fully cover the module’s rear side. We use special mounts that minimize shading of the rear glass.

2. Installation Height: The higher the panel is raised above the ground or roof (optimally from 1 meter for ground-mounted solar power plants), the better the light disperses and the more energy the rear side generates.

3. Inverter Current Calculation: Due to additional bifacial generation, the panel’s operating current can increase. Our engineers always calculate a current margin on the inverter’s trackers to avoid generation clipping on sunny days.