Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.
Trade pricing on 169 authorized brands. Full OEM warranties. 7-10 business days delivery.
Shop All ProductsPremium monocrystalline and bifacial panels with 25-year warranties from authorized manufacturers.
Shop Solar PanelsString, micro, and hybrid inverters from 8+ authorized brands. Full warranty and technical support.
Shop InvertersHome and commercial battery systems from leading manufacturers. Grid-tied and off-grid options.
Shop BatteriesRoof and ground mount systems from IronRidge, Unirac, and Quick Mount PV. All components in stock.
Shop RackingMPPT and PWM charge controllers for off-grid and hybrid solar systems from 5+ authorized brands.
Shop ControllersHome standby, portable, and commercial generators. Automatic transfer switches and installation accessories.
Shop GeneratorsLevel 1, Level 2, and commercial EV chargers from leading brands. Smart connectivity and universal compatibility.
Shop EV ChargersBreakers, panels, wire, conduit, and safety switches from Square D, Siemens, Eaton, and more. Not just solar.
Shop Electrical50,000+ SKUs, 169 authorized brands. Our team helps you find the right products for any project.
Get a Quote
Model MSBK-33 660 | Mono Bifacial Dual Glass | 132 Monocrystalline Cells | Bifacial | 1500V System Voltage
The BYD MSBK-33 660W mono bifacial dual glass monocrystalline solar panel delivers high power density for modern commercial and utility scale systems. Designed around advanced 210 mm cells and bifacial technology, it offers a front side rated output of 660 W under standard test conditions and a module efficiency up to 21.26%. The dual glass structure increases durability, while bifacial generation boosts overall energy yield on reflective surfaces. This panel belongs to BYD’s MSBK-33 645–675 W family and is engineered to balance high output, reliability, and long term performance. With a 1500 V system rating, robust mechanical design, and optimized low light behavior, it suits ground mount, tracker, and large rooftop projects where every watt matters.
High power density for large arrays: Rated at 660 W, this module reduces required string counts and balance of system hardware for many layouts. Higher power per module supports more compact designs and can simplify installation on constrained sites.
Bifacial energy gain on reflective surfaces: The bifacial dual glass design allows light capture from both sides, delivering additional energy yield where ground or roof surfaces provide albedo. System owners can benefit from power gains of roughly 5–25% in well optimized installations, lowering long term energy costs.
Durable dual glass construction: A dual glass module structure enhances mechanical strength and environmental resistance across varied climates. It supports high front and rear mechanical load capacity, making it suitable for exposed, high wind or snowy sites where reliability is essential.
Stable performance in real world climates: With a low temperature coefficient of power at around -0.328% per degree Celsius, output is maintained more effectively in hotter conditions. The operating temperature range from -40 °C to 85 °C supports projects in both cold and hot regions worldwide.
Bankable long term warranties: A 12 year product warranty and 30 year linear power warranty back the long life design of this panel. The guaranteed performance curve limits total degradation to 83.5% of initial output at year thirty, helping project owners forecast revenue with confidence.
This BYD MSBK-33 660W mono bifacial dual glass module converts sunlight into usable DC electricity using high efficiency monocrystalline cells. Each cell uses the photovoltaic effect to create current when photons strike the silicon junction. The panel’s bifacial architecture captures irradiance from both the front and rear surfaces, so both direct sunlight and reflected light from the ground contribute to the output. Under standard test conditions, the module delivers a maximum power of 660 W with a voltage at maximum power near 38.04 V and current at maximum power around 17.36 A. In real world operating conditions defined by NMOT, the module still maintains strong output with a rated power of about 493.8 W. The generated DC power is then routed through string cabling to a suitable inverter, which converts it into AC power for on site loads or export to the grid.
Monocrystalline cell conversion: High purity monocrystalline silicon cells form the core energy conversion layer within the module. When sunlight hits these cells, charge carriers are generated and directed to produce a steady DC current with high efficiency and strong low light behavior.
Bifacial dual glass architecture: The panel features transparent glass on both sides, enabling the rear side to harvest reflected light from the surroundings. This bifacial effect increases total energy yield compared with similar monofacial modules, especially on bright, reflective ground or optimized mounting structures.
System integration and performance: With a 1500 V DC maximum system voltage and a 35 A series fuse rating, the module integrates easily into modern high voltage strings. Its stable temperature coefficients and broad operating temperature range help maintain predictable performance when linked to mainstream inverters and single axis trackers.
| Module Brand / Manufacturer | BYD Company Limited |
| Model Name | MSBK-33 660 |
| Technology Type | Mono bifacial dual glass monocrystalline |
| Power Range Series | 645 W to 675 W module family |
| Maximum Power (Pmax, STC) | 660 W |
| Power Tolerance | 0 to +0.5% (0 to +5 W) |
| Module Efficiency (STC) | 21.26% |
| Voltage at Maximum Power (Vmpp, STC) | 38.04 V |
| Current at Maximum Power (Impp, STC) | 17.36 A |
| Open Circuit Voltage (Voc, STC) | 45.72 V |
| Short Circuit Current (Isc, STC) | 18.24 A |
| Rated Power at NMOT (Pmax) | 493.8 W |
| Voltage at Maximum Power (Vmpp, NMOT) | 35.40 V |
| Current at Maximum Power (Impp, NMOT) | 13.95 A |
| Open Circuit Voltage (Voc, NMOT) | 42.90 V |
| Short Circuit Current (Isc, NMOT) | 14.71 A |
| Nominal Module Operating Temperature (NMOT) | 45 °C ± 2 °C |
| Operating Temperature Range | -40 °C to +85 °C |
| Temperature Coefficient of Pmax | -0.328% / °C |
| Temperature Coefficient of Voc | -0.254% / °C |
| Temperature Coefficient of Isc | +0.041% / °C |
| Maximum System Voltage | 1500 V DC |
| Series Fuse Rating | 35 A |
| Bifacial Factor (Typical) | 70% ± 5% |
| Cell Type and Size | 210 mm monocrystalline silicon cells |
| Number of Cells | 132 cells |
| Module Dimensions (H × W × D) | 2384 mm × 1303 mm × 35 mm |
| Weight per Module | 38.7 kg |
| Front Glass Type | Anti reflection coating glass |
| Glass Thickness | 2 mm |
| Frame Material | Anodized aluminium alloy frame |
| Junction Box Diodes | 3 diodes integrated |
| Junction Box Protection Class | IP rated weather protection |
Certifications: IEC 61215-1, IEC 61215-1-1, IEC 61215-2, IEC 61730-1, IEC 61730-2, UL 61730-1, UL 61730-2, Fire Safety Class C.
Inverter Compatibility: Designed for high voltage 1500 V DC systems and compatible with mainstream string inverters and single axis trackers used in commercial and utility scale plants.
Environmental: Suitable for harsh environments including ammonia exposure, high mechanical loads up to utility grade standards, and a wide ambient temperature range from -40 °C to 85 °C.
Warranty: 12 year product workmanship warranty plus 30 year linear power warranty, with maximum annual degradation of 0.55% and a guaranteed minimum of 83.5% of initial power at year 30.
● Available | Contact us for lead time and pricing
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.