TOPKING NES144-7-550M Solar Panel 550W Mono-Facial PERC – High-Efficiency 21.28% Module with 25-Year Warranty

High-Performance Solar Technology for Maximum Energy Harvest

The TOPKING NES144-7-550M represents the pinnacle of mono-facial solar panel technology, engineered to deliver exceptional power output and reliability for demanding solar installations. This premium 550W module combines cutting-edge PERC (Passivated Emitter and Rear Cell) technology with innovative half-cell design to maximize energy production, even in challenging environmental conditions.

Key Features and Benefits

Superior Power Output and Efficiency

• Impressive 550W nominal power rating for maximum energy generation
• Exceptional 21.28% module conversion efficiency exceeds industry standards
• PERC cell technology improves light absorption and electron capture
• High power density reduces overall system footprint and installation costs
• Excellent low-light performance for extended daily production hours

Innovative Half-Cell Design

• 144 half-cut cell configuration (72 full-cell equivalent) reduces resistive losses
• Smaller cells experience less mechanical stress, improving durability
• Improved performance in partial shading conditions
• Lower operating temperature reduces hot-spot potential
• Enhanced reliability and reduced cell micro-cracking risk

Outstanding Reliability and Durability

• Robust aluminum frame design withstands rigorous environmental conditions
• High wind load resistance (2400 Pa) for stability in adverse weather
• Superior snow load capacity (5400 Pa) for winter reliability
• Anti-reflective, high-transmission tempered glass with enhanced impact resistance
• Multi-busbar cell design reduces electron path length and improves reliability

Comprehensive Warranty Protection

• 25-year linear power output warranty ensures long-term performance
• Guaranteed maximum annual degradation of only 0.55%
• 12-year product workmanship warranty
• Minimum 84.8% power output guaranteed at year 25
• Certifications: IEC, UL, MCS, CEC, INMETRO (confirm specific certifications)

Technical Specifications

Electrical Parameters (STC):

• Maximum Power (Pmax): 550W
• Module Efficiency: 21.28%
• Open Circuit Voltage (Voc): 49.5V (estimated)
• Short Circuit Current (Isc): 13.9A (estimated)
• Maximum Power Voltage (Vmp): 41.3V (estimated)
• Maximum Power Current (Imp): 13.3A (estimated)
• Power Tolerance Range: 0~+5W

Mechanical Characteristics:

• Cell Type: Monocrystalline PERC
• Cell Configuration: 144 half-cells (6 × 24)
• Module Dimensions: Approximately 2278 × 1134 × 35 mm
• Weight: Approximately 28 kg
• Glass: 3.2mm high-transmission tempered glass
• Frame: Anodized aluminum alloy
• Junction Box: IP68 rated with bypass diodes
• Cables: 4mm² photovoltaic cable, length 1200mm
• Connectors: MC4 compatible

Temperature Characteristics:

• Operating Temperature Range: -40°C to +85°C
• Temperature Coefficient of Pmax: -0.35%/°C (estimated)
• Temperature Coefficient of Voc: -0.28%/°C (estimated)
• Temperature Coefficient of Isc: +0.048%/°C (estimated)

Maximum Ratings:

• Maximum System Voltage: 1500V DC
• Wind Load: 2400 Pa
• Snow Load: 5400 Pa
• Maximum Series Fuse Rating: 20A

Ideal Applications

• Residential rooftop solar installations
• Commercial and industrial solar systems
• Solar carports and parking structures
• Ground-mounted solar farms
• Utility-scale solar projects
• Agricultural solar installations
• Off-grid solar power systems
• Hybrid solar and storage solutions

Installation and Performance Benefits

Optimized System Design The high power rating of the TOPKING NES144-7-550M enables system designers to install fewer modules for the same power capacity, reducing balance of system costs including mounting hardware, wiring, and labor. The 1500V maximum system voltage rating allows for longer string configurations, further optimizing installation efficiency.

Enhanced Shade Tolerance The half-cell design creates two parallel circuits within each module, allowing the panel to continue producing energy even when partially shaded. This innovative configuration maintains higher system yield in real-world conditions where shadows from trees, chimneys, or adjacent structures would significantly impact conventional solar panel performance.

Lower Temperature Coefficient Solar panels typically lose efficiency as their temperature increases. The advanced PERC technology and half-cell design of the NES144-7-550M result in improved temperature coefficients, ensuring better performance in hot climate conditions compared to standard modules.

Degradation Resistance The TOPKING NES144-7-550M is engineered to resist common degradation mechanisms including potential-induced degradation (PID), light-induced degradation (LID), and light and elevated temperature-induced degradation (LeTID), ensuring consistent performance throughout the panel’s 25+ year lifespan.

Why Choose TOPKING Solar Panels?

TOPKING has established itself as a leader in renewable energy solutions through unwavering commitment to quality, innovation, and performance. Our NES144-7-550M solar panel represents years of research and development in photovoltaic technology, delivering industry-leading results for demanding residential, commercial, and utility-scale applications.

With its exceptional combination of high efficiency, durability, and reliability, backed by comprehensive warranty protection, the TOPKING NES144-7-550M solar panel represents the ideal choice for those seeking a premium solar solution that delivers outstanding return on investment through decades of clean energy production.

Transform your energy future with TOPKING’s advanced solar technology – where cutting-edge innovation meets uncompromising reliability for sustainable power generation.