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Views: 0 Author: Site Editor Publish Time: 2025-08-07 Origin: Site
Solar energy has evolved beyond one-sided power generation. Bifacial solar panels, designed to capture sunlight from both front and back, are redefining efficiency in renewable energy. This guide breaks down everything you need to know—from how they work to why they’re the smart choice for 2025.
Bifacial solar panels are photovoltaic modules that generate electricity by absorbing light from both front and rear surfaces. Unlike monofacial panels (with opaque backsheets), bifacial models use transparent materials (e.g., ultra-clear tempered glass, ETFE film) as backsheets, allowing the rear side to capture reflected light (from ground, water, snow, or buildings) and scattered sky light. This dual absorption boosts power output significantly.
Backsheet | Cell Type | Light Absorption | Frame | Efficiency Gain | |
Bifacial | Transparent (glass/ETFE) | Mostly monocrystalline (higher efficiency) | Front (direct sunlight) + rear (reflected/scattered light) | Optional (some with aluminum frames for durability) | 10%-30% highe |
Monofacial | Opaque (TPT/TPE) | Monocrystalline/polycrystalline | Front only | Typically framed | Baseline efficiency |
Captures direct front light + rear reflected/scattered light, delivering 10%-30% more power than monofacial panels.
Ground-mounted systems with high-reflectivity surfaces (e.g., white gravel) gain ~30%.
Rooftop installations gain ~10%-15%;
Though upfront costs are ~5%-10% higher, increased energy output reduces the levelized cost of electricity (LCOE) by 8%-15% over 25 years;
Dual-glass encapsulation (tempered glass on both sides) resists corrosion, UV damage, and mechanical impacts (hail, sandstorms), ideal for coastal/humid/dusty areas.
30-year lifespan (linear degradation rate <0.3%/year) vs. 25 years for most monofacial panels.
No EVA film (which hydrolyzes in high humidity) reduces Potential Induced Degradation (PID), ensuring stable performance in damp climates.
Better Low-Light Performance: Dual-sided cells absorb scattered light (cloudy days, dawn/dusk), generating 5%-10% more power than monofacial panels in low-light conditions.
Model | Power | Efficiency | Dimensions | Best For |
OCEAN-630W | 630W | 23.30% | 2382×1134×30mm | Commercial rooftops, small-scale industrial systems |
OCEAN-700W | 700W | 23.60% | 2278×1303×33mm | Large rooftops, ground-mounted residential systems |
OCEAN-730W | 730W | 23.50% | 2382×1303×33mm | Utility-scale solar farms, ground-mounted projects |
N-topcon Dual-glass bifacial mono 630W solar panel
N-topcon Dual-glass bifacial mono 700W solar panel
N-topcon Dual-glass bifacial mono 730W solar panel
Higher wattage (730W) = fewer panels for same energy, ideal for large open areas.
Coastal/humid areas → prioritize dual-glass models (anti-corrosion).
630W offers best cost-performance for small to medium projects.
Maximize reflected light with high-albedo ground covers (e.g., white gravel).
Fit for flat or low-slope roofs (captures reflected light from adjacent buildings).
Floating solar systems (utilize water reflection, reduce evaporation).
Snow reflection boosts winter output (monofacial panels lose efficiency under snow).
Longi, Trina Solar, Risen Energy (proven reliability).
Ocean Solar (custom solutions, 10+ years of dual-glass expertise), ZNshine Optoelectronics, Solardeland (European quality standards).
Customization: Tailored power, size, and encapsulation for unique projects.
Certifications: IEC, TÜV, UL, and local standards (e.g., CEC for US, VDE for EU).
After-sales: 25-year performance warranty + 10-year product warranty.
Q: Do bifacial panels need special mounting?
A: Yes—install with 30°+ tilt and spacing (to avoid shading rear side). Ground mounts with elevated structures work best.
Q: Are they more expensive to install?
A: Slightly (due to mounting adjustments), but offset by higher energy output within 3-5 years.
Ready to upgrade to bifacial solar?
