The LESSO 595W module is a high-output solar panel built with 210R rectangular N-type TOPCon bifacial cell technology. Designed for rooftop installations, commercial systems, and ground-mounted solar plants, it combines dual-glass construction, bifacial energy gain from reflected light, a low temperature coefficient, and zero light-induced degradation (LID).

Key Features

595W Power Rating: Delivers 595 W rated peak power with up to 22.04% module conversion efficiency.
210R Rectangular Wafer Architecture: Employs rectangular half-cut cells ($182.2\text{ mm} \times 210\text{ mm}$) to balance high wattage with an industry-standard 1,134 mm panel width.
N-Type TOPCon Cells: Minimizes degradation, eliminates initial LID/LeTID, and maintains strong generation under low-light and overcast conditions.
Bifacial Dual-Glass Yield: Dual-glass structure captures reflected light on the rear side, providing an additional 5% to 25% energy gain depending on surface albedo.
High Heat Tolerance: Low temperature coefficient of $-0.30\%/\text{°C}$ reduces power drop in hot tropical environments.
Mechanical Durability: Certified to withstand front static loads up to 5,400 Pa (snow/pressure) and rear wind loads up to 2,400 Pa.
Warranty Coverage: 12-to-15 year product warranty with a 30-year linear power warranty ( first-year degradation, annual linear degradation).

Technical Specifications (STC Data: 1000 W/m^2, AM 1.5, 25°C)

Electrical Parameter	Numerical Specification
Rated Maximum Power (P_max)	595 W
Optimum Operating Voltage (V_mp)	40.80 V
Optimum Operating Current ($I_mp)	14.59 A
Open-Circuit Voltage ($V_{oc}$)	49.30 V
Short-Circuit Current ($I_{sc}$)	15.42 A
Module Efficiency	22.04%
Power Output Tolerance	0 to +5 W
Bifaciality Factor

Mechanical & Construction Details

Parameter	Specification
Cell Layout & Type	N-Type TOPCon 210R Rectangular Half-Cut (132 cells, )
Dimensions (L×W×H)	2,382 mm × 1,134 mm × 30 mm
Module Weight	32.5 kg
Front / Rear Glass	2.0 mm + 2.0 mm Semi-tempered anti-reflective coating (ARC) glass
Frame	Anodized aluminum alloy (Silver frame)
Junction Box	IP68 rated, 3 bypass diodes
Output Cables	solar cable, length (or customized)
Connector	MC4 or MC4-EVO2 compatible
Maximum System Voltage	1,500 V DC
Maximum Series Fuse Rating	30 A
Operating Temperature Range	-40°C to +85°C
Temperature Coefficient (P_max)
Temperature Coefficient (V_oc)
Temperature Coefficient (I_sc)

Frequently Asked Questions (FAQ)

Q1. What makes 210R cells different from regular cells?

210R designates rectangular half-cut cells cut from 210 mm silicon ingots (182.2mm×210mm). This format delivers 595W class output while keeping the panel width at 1,134 mm for standard container transport and handling.

Q2. How much extra energy does the rear side produce?

Depending on ground surface reflectivity (albedo) and mounting height, the rear face adds roughly 5% to 25% extra generation. White concrete, light membranes, and light-colored gravel yield the highest back-side power.

Q3. Is the 595W panel compatible with 18A–20A solar hybrid inverters?

Yes. With an operating current (I_mp) of 14.59 A and a short-circuit current (I_sc) of 15.42 A, it fits within the MPPT input parameters of most single-phase and three-phase hybrid string inverters.

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Lesso 595W 210R N-type Bifacial Solar Panel

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