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Model 300 | PERC Monocrystalline | 60 Full-Cell 156×156 mm | Monofacial | 1000V System Voltage
The GermanSolar 300 300W PERC Monocrystalline Solar Panel is designed for reliable power production and long service life in residential, commercial, and small industrial systems. This high quality module combines a 300 Wp maximum power rating with up to 18.4% panel efficiency for strong output from a compact footprint. Advanced PERC cell technology is used to capture more sunlight and improve performance in real world conditions, including high temperatures and partial cloud cover. The panel features 60 monocrystalline cells sized 156×156 mm, optimized within a 1650×997×40 mm frame that fits common racking and rooftop layouts. A robust anodized aluminium frame and anti reflection coated glass are employed to enhance structural strength while improving light transmission. The GermanSolar 300 panel is engineered to deliver consistent energy yield with a low total degradation rate of only 0.8% per year under standard conditions. A 12 year product warranty and extended power warranty provide long term assurance for owners and installers. This module is a strong choice for customers seeking dependable 300 watt performance with modern PERC technology and precise GermanSolar engineering.
High power density for limited roof space: The 300 Wp output and up to 18.4% efficiency allow more energy from fewer modules on constrained roofs.
Reliable long term performance: A 10 year power warranty to 90% and 25 year warranty to 80% output support dependable lifetime energy yield.
Robust construction and materials: Anodized aluminium frame, EVA encapsulation, and 3.2 mm anti reflection glass improve durability in harsh weather conditions.
Flexible system design: The 1000 V maximum system voltage and 15 A series fuse rating suit a wide range of string inverters and layouts.
Optimized for various climates: A broad operating temperature range from -40 °C to 85 °C supports installations in both hot and cold environments.
Trusted GermanSolar brand: The panel is supplied by GermanSolar USA Inc., providing local expertise and support within the United States market.
This GermanSolar 300 300W PERC Monocrystalline Solar Panel converts sunlight into usable DC electricity through high efficiency PERC cells and carefully matched electrical characteristics. Each of the 60 monocrystalline cells generates current when exposed to light, and the combined array delivers up to 300 Wp at standard test conditions. The module operates around 32.88 V at maximum power with a current of 9.33 A, which suits typical residential and commercial string configurations. An anti reflection coated glass surface is used to admit more light to the cells, while EVA encapsulation protects internal circuitry from moisture and mechanical stress. When connected to a compatible inverter, the DC output is converted into AC energy for household loads or grid export. The low temperature coefficients and engineered operating window help maintain stable performance across seasonal temperature swings.
PERC monocrystalline energy conversion: PERC monocrystalline cells use a passivated rear surface to reflect unabsorbed light back into the cell structure. This design increases the chance of photon absorption and boosts overall energy conversion efficiency compared to standard cells. The result is higher output from the same panel area, which is beneficial on space constrained rooftops and carports.
Optimized electrical performance under load: At maximum power, the module delivers 32.88 V and 9.33 A in its 300 Wp configuration, supporting efficient string design with modern inverters. A tight power tolerance of 0 to +1.5% ensures that modules meet or slightly exceed their nameplate power rating in the field. Open circuit voltage reaches 39.82 V, while short circuit current is 9.74 A, providing clear parameters for safe and efficient array sizing.
Thermal management and long term stability: The panel is specified for operation from -40 °C to 85 °C, which allows year round use in diverse climates. Temperature coefficients of -0.414%/°C for Pmax and -0.45%/°C for Voc help define expected output reduction as cell temperatures rise. A low total degradation rate of 0.8% per year is supported by quality encapsulant materials and a rigid anodized aluminium frame. Together, these design choices maintain structural integrity, electrical insulation, and stable performance throughout the warranty period.
| Manufacturer | GermanSolar USA Inc. |
| Country of Origin | United States |
| Model Number | 300 |
| Cell Technology | PERC monocrystalline |
| Cell Type and Size | Monocrystalline 156 × 156 mm cells |
| Number of Cells | 60 cells |
| Technology Type | Monofacial crystalline silicon module |
| Power Range | 285 Wp to 300 Wp |
| Maximum Power (Pmax) - High Rating | 300 Wp |
| Voltage at Pmax (Vmpp) - 300 Wp | 32.88 V |
| Current at Pmax (Impp) - 300 Wp | 9.33 A |
| Open Circuit Voltage (Voc) - 300 Wp | 39.82 V |
| Short Circuit Current (Isc) - 300 Wp | 9.74 A |
| Maximum Power (Pmax) - Lower Rating | 223 Wp |
| Voltage at Pmax (Vmpp) - 223 Wp | 31.01 V |
| Current at Pmax (Impp) - 223 Wp | 7.19 A |
| Open Circuit Voltage (Voc) - 223 Wp | 36.39 V |
| Short Circuit Current (Isc) - 223 Wp | 7.89 A |
| Module Efficiency Range | 17.5% to 18.4% |
| Power Tolerance | 0 to +1.5% |
| Total Degradation Rate | 0.8% per year (typical) |
| Nominal Operating Cell Temperature | 45 ± 2 °C |
| Operating Temperature Range | -40 °C to 85 °C |
| Temperature Coefficient of Pmax | -0.414% / °C |
| Temperature Coefficient of Voc | -0.45% / °C |
| Temperature Coefficient of Isc | +0.026% / °C |
| Maximum System Voltage | 1000 V |
| Series Fuse Rating | 15 A |
| Module Dimensions (H × W × D) | 1650 × 997 × 40 mm |
| Weight | 19.4 kg |
| Front Glass Type | Anti reflection coating glass |
| Front Glass Thickness | 3.2 mm |
| Encapsulant | EVA (ethylene vinyl acetate) |
| Frame Material and Color | Anodized aluminium, black |
| Junction Box | Weather resistant junction box with factory assembled connections |
Certifications:
Specific certification standards are not listed in the available product data.
Modules of this type are typically tested to major IEC and UL safety and performance standards, but installers should confirm compliance with the latest GermanSolar documentation.
Inverter Compatibility:
The 1000 V maximum system voltage and 15 A series fuse rating support compatibility with most modern string inverters designed for 1000 Vdc arrays.
Always verify final design with inverter manufacturer guidelines and local electrical codes.
Environmental:
The module is engineered for outdoor use with a wide operating temperature range and durable materials.
Site specific wind, snow, and corrosion requirements should be checked against project specifications and mounting system ratings.
Warranty:
A 12 year product warranty covers defects in materials and workmanship under normal use.
The power warranty specifies at least 90% of rated output at 10 years and at least 80% of rated output at 25 years, aligned with a total degradation rate of approximately 0.8% per year.
Installers should review the detailed GermanSolar warranty terms for conditions and claim procedures.
● Available | Contact us for lead time and project specific pricing
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