Accueil Modules photovoltaïques Back Contact Factory Direct Sales of 480W 490W 500W Dual Glass Black Frame BC Solar Panel

Paramètres de base
Paramètres de détail

Factory Direct Sales of 480W 490W 500W Dual Glass Black Frame BC Solar Panel

Low Degradation Rate

The module guarantees ≤1% first-year power loss and only ≤0.35% annual degradation, ensuring strong performance throughout its 30-year lifespan.

Performance supérieure en matière de température

With an excellent temperature coefficient of -0.26%/°C, the module maintains stable output even in high-heat conditions.

Strong Mechanical Load Resistance

Tested to withstand up to 5400Pa front load and 2400Pa rear load, the module ensures reliable performance under snow, wind, and other heavy stresses.

Optimized Partial Shading Response

Advanced cell and module design reduces output loss under partial shading, delivering steadier energy yield than Tongwei or JA modules in complex environments.

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Low Degradation Rate

The module guarantees ≤1% first-year power loss and only ≤0.35% annual degradation, ensuring strong performance throughout its 30-year lifespan.

Performance supérieure en matière de température

With an excellent temperature coefficient of -0.26%/°C, the module maintains stable output even in high-heat conditions.

Strong Mechanical Load Resistance

Tested to withstand up to 5400Pa front load and 2400Pa rear load, the module ensures reliable performance under snow, wind, and other heavy stresses.

Optimized Partial Shading Response

Advanced cell and module design reduces output loss under partial shading, delivering steadier energy yield than Tongwei or JA modules in complex environments.

Q
What are BC and GBC solar panels?

A
BC stands for Back-Contact: all electrical contacts are moved to the rear of the cell so the sun-facing side has no metal gridlines. GBC (Grid Back-Contact) is a marketing term some brands use for back-contact cells/modules whose conductor “grid” is printed on the rear. Both are part of the broader xBC family (IBC/ABC/HPBC/TBC), differing mainly in how the rear electrodes and passivating layers are implemented.
Q
Do BC/GBC panels perform better in shade?

A
Back-contact architectures tend to maintain higher output under partial shading because current collection is managed across rear-side pathways without front busbars. LONGi's HPBC 2.0 testing reports materially lower shade losses compared with conventional designs, and other BC suppliers report similar behavior. Real-world results still depend on module stringing and bypass diode strategy, but BC is a strong pick for complex rooftops.
Q
How are BC/GBC different from TOPCon, HJT, or PERC?

A
PERC/TOPCon/HJT place metal grids on the front, which shade a small portion of the cell. BC/GBC relocates both polarities to the back, eliminating front shading, increasing active area, and enabling higher practical efficiencies and sleek allblack looks. Variants include IBC (interdigitated), ABC (all-back-contact) and HPBC (hybrid passivated back contact).
Q
How do BC/GBC panels degrade over time? What warranties are typical?

A
Degradation varies by brand. A leading indicator of BC reliability is Maxeon’s IBC line: warranted 98% first year, max 0.25%/yr thereafter, and 40-year product/power/service coverage in select markets, an industry high. While terms differ across manufacturers, BC architectures have a strong reliability pedigree.
Q
Are BC/GBC modules really more efficient?

A
Yes—commercial BC modules currently lead the market. For example, AIKO’s mass produced ABC modules have reached 24.4% module efficiency in 2025 rankings, while earlier certified records exceeded 25% in lab conditions. That’s above typical TOPCon/HJT modules on the market.
Q
What does BC solar panels having higher efficiency mean for my project?

A
Fewer modules for the same capacity, smaller arrays for a given kW, and lower BOS (racking, wiring, labor) costs. Industry analyses attribute roughly ~7% BOS savings at the system level when switching to high efficiency BC panels.
Q
Are BC/GBC modules bifacial?

A
Many BC modules are monofacial, but bifacial BC options exist. AIKO’s ABC bifacial variant reports ~70% bifaciality—well above many mainstream bifacial products—enabling meaningful rear-side gains over bright ground or reflective membranes. Check the datasheet: if it’s “dual glass” and specified as bifacial, you can model rear-side yield.
Q
What temperature coefficient should I expect?

A
Premium BC modules commonly list around −0.26%/°C, helping preserve output in hot climates. Verify per model; AIKO’s ABC modules, for example, have published −0.26%/°C in independent yield testing.
Q
Are GBC, IBC, ABC, HPBC and TBC the same thing?

A
They’re all back-contact. The letters describe how the rear electrodes and passivation are built: IBC: Interdigitated rear fingers (Maxeon heritage) ABC: All-back-contact with optimized rear layout (AIKO) HPBC/TBC/HBC: hybrid or tunnel/passivated contacts combined with back-contact Naming is trending toward simply “BC” to reduce confusion.
Q
Is BC/GBC technology mature and bankable?

A
Yes, and accelerating. Analysts forecast BC manufacturing capacity could approach 1 TW by 2030. Growth is helped by key BC patents expiring around 2028, enabling more suppliers and lower costs. Meanwhile, top brands are shipping multi-GW annually and winning major utility projects.
Q
What’s the realistic efficiency “band” to shop for in 2025–2026?

A
Expect mainstream BC/GBC modules in the ~23–24.5% range, with flagship products touching mid-24s in volume and higher in records. Always validate a specific model’s STC efficiency on its datasheet.
Q
Are BC/GBC panels compatible with my existing inverters and racking?

A
Yes. Electrically they behave like standard modules (check Voc/Imp/IsC ratings), and they mount on conventional racking. Just ensure string sizing and current limits match your inverter’s spec.
Q
Do BC/GBC modules reduce hotspots and microcrack risks?

A
Back-contact layouts eliminate front ribbons and can be designed to mitigate local heating. One long-running example: Maxeon’s IBC cell architecture is marketed with enhanced hotspot/crack tolerance and maintains a 0.25%/yr warranted degradation profile. Protection still relies on quality control and bypass diode design—so compare certifications and test data.

PRODUITS APPARENTÉS

Paramètres mécaniques

Cell Type	GBC
Nombre de cellules	108 (6×18)
Dimensions	1800 × 1134 × 30mm
Glass	Dual glass, 2.0 + 2.0mm coated semi tempered glass
Frame	Black anodized aluminum
Poids	24.8 kg (54.67 lbs)
Output Cables	TüV 1x4mm²,(+)300mm,(-)200mm or Customized Length
Emballage	37 pcs per pallet 222 pcs per 20’ GP 888 pcs per 40’ HC

Buy 480W–500W Dual Glass Black Frame Mono PV Module Online — Engineering drawing displaying mounting hole positions of the 108 cells 480W 490W 500W dual glass black frame BC solar module, designed for accurate alignment and secure installation.

Paramètres électriques (STC*)

Module Type: SP-3-54HGBD-470M	470	475	480	485	490	495	500
Puissance maximale (Pmax/W)	470	475	480	485	490	495	500
Tension en circuit ouvert (Voc/V)	40.50	40.63	40.76	40.89	41.02	41.15	41.28
Courant de court-circuit (Isc/A)	14.82	14.89	14.96	15.03	15.10	15.17	15.24
Tension à la puissance maximale (Vmpp/V)	33.64	33.74	33.84	33.94	34.04	34.14	34.24
Courant à la puissance maximale (Imp/A)	13.98	14.09	14.19	14.30	14.40	14.50	14.60
Efficacité du module (%)	23.0	23.3	23.5	23.8	24.0	24.3	24.5

BC Module 470-500W Black Frame Panel - Technical Highlights

Advantage Point	Technical Highlight	User Benefit / Comparative Value
Industry-Leading High Efficiency	Adopts advanced GBC technology, hitting a maximum module efficiency of 24.5%—the highest in its power class	Reduces module quantity per MW project by ~8% vs. 23% efficiency panels, cutting transportation, storage, and installation labor costs; boosts project ROI by accelerating energy payback periods
Ultra-Low Degradation for Long-Term Projects	≤1% first-year power loss, ≤0.35% annual degradation, with 30-year linear power warranty (exceeds industry 25-year standard)	Ensures stable energy output for the entire project lifecycle (critical for PPA contracts); minimizes long-term maintenance replacement costs, enhancing project profitability and investor confidence
Extreme Environment Adaptability	5400Pa front/2400Pa rear static load resistance, -40°C~+85°C operating temperature range, and 25mm hail impact resistance	Eliminates project risks in harsh climates (high-altitude snow, coastal wind, desert heat); no need for additional protective accessories, simplifying project design and reducing unplanned costs
Partial Shading Optimization	Advanced cell layout + grid back contact (BC) design, reducing output loss by 15-20% vs. Tongwei/JA conventional modules under partial shading	Maintains stable yield in complex installation scenarios (e.g., buildings with obstructions, irregular rooftops); avoids "string output drag" issues, ensuring project energy generation meets pre-calculated targets
B2B Cost-Efficiency & Scalability	1500V high system voltage, 108-cell standard design, and factory-direct bulk supply (37 pcs/pallet, 962 pcs/40’ HC)	Lowers BOS costs by ~12% (fewer inverters, cables, and racking); standardized dimensions fit mainstream mounting systems, reducing project customization time; factory direct pricing supports high-margin distribution or competitive EPC bidding
Reliable Quality for Bulk Orders	IP68 junction box (moisture/dust-proof), black anodized aluminum frame (anti-corrosion), and compliance with IEC/CE certifications	Reduces post-delivery defect rates (critical for large batches); meets global market import standards, enabling distributors to expand to multi-region markets without quality compliance concerns

Factory Direct Sales Of 480W 490W 500W Dual Glass Black Frame BC Solar Panel

Factory Direct Sales of 480W 490W 500W Dual Glass Black Frame BC Solar Panel

Low Degradation Rate

Performance supérieure en matière de température

Strong Mechanical Load Resistance

Optimized Partial Shading Response

Low Degradation Rate

Performance supérieure en matière de température

Strong Mechanical Load Resistance

Optimized Partial Shading Response

What are BC and GBC solar panels?

Do BC/GBC panels perform better in shade?

How are BC/GBC different from TOPCon, HJT, or PERC?

How do BC/GBC panels degrade over time? What warranties are typical?

Are BC/GBC modules really more efficient?

Yes—commercial BC modules currently lead the market. For example, AIKO’s mass produced ABC modules have reached 24.4% module efficiency in 2025 rankings, while earlier certified records exceeded 25% in lab conditions. That’s above typical TOPCon/HJT modules on the market.

What does BC solar panels having higher efficiency mean for my project?

Fewer modules for the same capacity, smaller arrays for a given kW, and lower BOS (racking, wiring, labor) costs. Industry analyses attribute roughly ~7% BOS savings at the system level when switching to high efficiency BC panels.

Are BC/GBC modules bifacial?

What temperature coefficient should I expect?

Premium BC modules commonly list around −0.26%/°C, helping preserve output in hot climates. Verify per model; AIKO’s ABC modules, for example, have published −0.26%/°C in independent yield testing.

Are GBC, IBC, ABC, HPBC and TBC the same thing?

Is BC/GBC technology mature and bankable?

Yes, and accelerating. Analysts forecast BC manufacturing capacity could approach 1 TW by 2030. Growth is helped by key BC patents expiring around 2028, enabling more suppliers and lower costs. Meanwhile, top brands are shipping multi-GW annually and winning major utility projects.

What’s the realistic efficiency “band” to shop for in 2025–2026?

Expect mainstream BC/GBC modules in the ~23–24.5% range, with flagship products touching mid-24s in volume and higher in records. Always validate a specific model’s STC efficiency on its datasheet.

Are BC/GBC panels compatible with my existing inverters and racking?

Yes. Electrically they behave like standard modules (check Voc/Imp/IsC ratings), and they mount on conventional racking. Just ensure string sizing and current limits match your inverter’s spec.

Do BC/GBC modules reduce hotspots and microcrack risks?

PRODUITS APPARENTÉS

Factory Direct Sales of 480W 490W 500W Dual Glass Black Frame BC Solar Panel

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Paramètres mécaniques

Paramètres électriques (STC*)

BC Module 470-500W Black Frame Panel - Technical Highlights

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