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Model GSM 310-385W BF framed | Mono-crystalline Bifacial | 60 Full-Cell | Bifacial | 1500V System Voltage
The G-Solar GSM 310-385W BF framed monocrystalline bifacial solar panel delivers high performance, long life and reliable energy production for residential and commercial installations. This premium bifacial module captures light from both sides, enabling a power generation gain of approximately 10–30% from reflected light, depending on installation conditions and surface albedo. The panel uses 60 mono-crystalline cells with advanced surface texturing to maximize light absorption and boost efficiency up to 18.8% on the front side. With zero light induced degradation and strong resistance to potential induced degradation, the module maintains stable energy yield over decades. A robust tempered glass on both sides, an anodized aluminium frame and IP68 rated junction boxes ensure dependable operation even in harsh environments. The GSM 310-385W BF framed module is ideal for sandy, snowy or high latitude regions where bifacial gain and mechanical strength are essential.
Higher energy yield with bifacial design: The module increases power generation by approximately 10–30% using reflected light on the rear side. This gain helps systems reach target production with fewer modules and optimizes roof or ground space.
Proven long term reliability: Zero light induced degradation preserves initial performance after installation. PID free design, triple 100% EL testing and bankable quality ensure consistent output across the 30 year performance period.
Durable construction for harsh climates: Dual 2.0 mm tempered glass and an anodized aluminium frame provide excellent resistance against sand, dust and mechanical abrasion. The module withstands 3800 Pa wind loads, 5400 Pa snow loads and 35 mm hail at 97 km/h.
Stable performance in heat and low light: A low temperature coefficient of Pmax at -0.38% per °C limits losses on hot days. Outstanding power output at low irradiance supports stronger generation during mornings, evenings and overcast conditions.
Extended product and power warranties: A 15 year manufacturing warranty covers defects in materials and workmanship. The linear power warranty guarantees at least 90% output at 12 years and 80% output at 30 years, giving long term investment confidence.
This mono-crystalline bifacial solar module converts sunlight into clean DC electricity using high efficiency silicon cells. The front side captures direct and diffuse sunlight, while the rear side harvests reflected light from the roof, ground or surrounding structures. At standard test conditions, the GSM 310-385W BF framed panel reaches a maximum power of 310 Wp on the front side, with the rear contributing additional energy depending on site conditions. Electrical current passes through five bus bar cell interconnections and then through MC4 compatible connectors into your string design. The system operates safely within a 1500 V DC rating under IEC, using a maximum series fuse of 15 A. Temperature coefficients and NOCT performance values describe how real world conditions influence voltage, current and power, allowing accurate system design and yield estimation.
Front side power generation: The 60 mono-crystalline cells on the front surface absorb incoming sunlight and convert it into electrical energy through the photovoltaic effect. At STC, the GSM 310 configuration provides a maximum power of 310 Wp with a Vmpp of 32.7 V and an Impp of 9.49 A.
Rear side bifacial gain: The transparent glass back allows light to reach the rear side of the cells, capturing reflected and diffuse radiation. Under suitable mounting and surface conditions, this rear side can contribute an additional 10–30% energy, boosting annual yield without increasing array footprint.
Thermal and low light behavior: The nominal operating cell temperature of 42 ±2 °C represents real world temperature under moderate conditions. As temperature rises, the power output decreases slowly due to the -0.38% per °C Pmax coefficient, which is favorable for hot climates. In low irradiance, advanced surface texturing and cell design help maintain useful voltage and current, enhancing energy harvest during less than ideal weather.
| Brand | G-Solar |
| Model | GSM 310-385W BF framed |
| Cell Technology | Mono-crystalline, 5 bus bars |
| Cell Count and Layout | 60 cells (6×10) |
| Technology Type | Bifacial, framed module |
| Power Range (STC, front side) | 300–310 Wp per module |
| Maximum Power (Pmax, STC, front side) | 310 Wp |
| Power at NOCT (front side) | 228 Wp |
| Module Efficiency (front side) | 18.2–18.8 % depending on power class |
| Module Efficiency (rear side, typical) | 15.5–16.1 % depending on power class |
| Voltage at Maximum Power Vmpp (STC, front) | 32.7 V |
| Current at Maximum Power Impp (STC, front) | 9.49 A |
| Open Circuit Voltage Voc (STC, front) | 39.6 V |
| Short Circuit Current Isc (STC, front) | 9.98 A |
| Voltage at Maximum Power Vmpp (NOCT, front) | 30.0 V |
| Current at Maximum Power Impp (NOCT, front) | 7.59 A |
| Open Circuit Voltage Voc (NOCT, front) | 36.6 V |
| Short Circuit Current Isc (NOCT, front) | 8.04 A |
| Power Tolerance | 0 ~ +1.5% (module), datasheet 0 / +5 W |
| Maximum System Voltage | 1500 V DC (IEC), 1000 V DC (UL) |
| Maximum Series Fuse Rating | 15 A |
| Nominal Operating Cell Temperature (NOCT) | 42 ±2 °C |
| Operating Temperature Range | -40 °C to 85 °C |
| Temperature Coefficient of Pmax | -0.38 % / °C |
| Temperature Coefficient of Voc | -0.30 % / °C |
| Temperature Coefficient of Isc | +0.048 % / °C |
| Module Dimensions (H × W × D) | 1974 × 992 × 35 mm |
| Weight | 21.7 kg |
| Front Glass / Back Glass | 2.0 mm tempered glass on both sides |
| Frame Material | Anodized aluminium alloy, framed design |
| Junction Box Protection | IP68, distributed junction box |
| Connector Type | MC4 compatible |
| Output Cables | 4.0 mm², asymmetric lengths (-) 350 mm, (+) 160 mm |
| Mechanical Load Rating | 3800 Pa wind, 5400 Pa snow, 35 mm hail at 97 km/h |
| Country of Origin / Seller | G-Solar, Germany |
Certifications: CE compliant, IEC 61215 application, TÜV Safety Class II, UL 1703, tested for PID resistance, sand and dust abrasion, salt mist and ammonia corrosion.
Inverter Compatibility: Designed for 1500 V DC systems and 1000 V DC UL systems, compatible with modern string and centralized inverters that support these DC input ratings.
Environmental: Enhanced fire resistance with excellent safety behavior, robust performance under wind and snow loads, and resistance to harsh coastal or agricultural atmospheres.
Warranty: 15 year manufacturing warranty covering materials and workmanship, 12 year warranty at 90% power output and 30 year warranty at 80% power output with a total degradation rate of approximately 0.67% per year.
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