The size of 400W solar panel is meticulously engineered to balance high power output with versatile installation options, making it an ideal choice for commercial and industrial solar projects worldwide. Measuring approximately 1722mm x 1134mm x 30mm, this panel delivers 400 watts of peak power while maintaining a compact footprint that optimizes space on rooftops, ground mounts, and solar farms. Crafted with advanced PERC monocrystalline technology, it achieves up to 21.3% efficiency, ensuring reliable energy generation even in low-light conditions.
In international trade, where reliability and performance metrics are paramount, the size of 400W solar panel stands out for its standardization, allowing seamless integration into large-scale PV systems. This dimension—length of 1722mm, width of 1134mm, and a slim 30mm thickness—facilitates easy handling during shipping and installation, reducing logistics costs and deployment time. Whether you're outfitting utility-scale installations or commercial buildings, this panel's dimensions provide the perfect size of 400W solar panel for maximizing return on investment through superior energy yield per square meter.
Backed by rigorous testing to IEC 61215 and IEC 61730 standards, it withstands harsh environmental conditions, from high winds to heavy snow loads. The size of 400W solar panel is not just about physical dimensions; it's about delivering sustainable power solutions that align with global energy transitions, supporting B2B clients in achieving net-zero goals efficiently.
Below is a comprehensive table outlining the technical specifications, with a focus on the precise size of 400W solar panel to aid in system design and procurement.

| Parameter | Value |
|---|---|
| Peak Power (Pmax) | 400W |
| Size of 400W Solar Panel (L x W x T) | 1722mm x 1134mm x 30mm |
| Weight | 20.5kg |
| Cell Type | Monocrystalline PERC, 144 half-cells (6x24) |
| Module Efficiency | 20.6% - 21.3% |
| Open Circuit Voltage (Voc) | 49.5V |
| Short Circuit Current (Isc) | 10.95A |
| Maximum Power Voltage (Vmpp) | 41.2V |
| Maximum Power Current (Impp) | 9.71A |
| Temperature Coefficient (Pmax) | -0.36%/°C |
| Temperature Coefficient (Voc) | -0.28%/°C |
| Temperature Coefficient (Isc) | 0.05%/°C |
| Operating Temperature | -40°C to +85°C |
| Maximum System Voltage | 1500V DC (IEC/UL) |
| Junction Box | IP68, 3 diodes |
| Cable | 4mm², 300mm length (customizable) |
| Certifications | IEC 61215, IEC 61730, UL 1703, CE, INMETRO |
The versatile size of 400W solar panel makes it suitable for a wide array of B2B applications, from utility-scale projects to distributed generation. In commercial rooftops, its 1722 x 1134mm footprint allows for dense packing, maximizing kWh production per available space. For ground-mounted solar farms, the slim 30mm profile reduces wind resistance, enhancing structural efficiency in large arrays.
Off-grid industrial sites, such as mining operations or remote telecom towers, benefit from its high power-to-size ratio, enabling reliable power in harsh climates. In agricultural settings, the size of 400W solar panel supports agrivoltaic systems, where panels are elevated over crops, providing shade while generating clean energy. Residential developers in emerging markets also favor this dimension for balcony or carport installations, where space constraints demand compact yet powerful solutions.
Furthermore, its compatibility with trackers and bifacial configurations expands use cases to floating solar on reservoirs or highway noise barriers, delivering scalable energy for international infrastructure projects.
Choosing the size of 400W solar panel offers distinct advantages over competitors, starting with superior space efficiency. At 1.95 square meters per panel, it outperforms larger modules in constrained environments, yielding higher specific power (205W/m²). The PERC half-cut cell design minimizes micro-cracks and shading losses, ensuring consistent performance across diverse orientations and weather patterns.
Durability is a cornerstone: the anodized frame resists corrosion in saline atmospheres, while AR-coated glass reduces reflection losses by up to 2%, boosting annual energy harvest by 3-5%. Compared to polycrystalline alternatives, this monocrystalline variant provides 10-15% higher efficiency, translating to fewer panels and lower balance-of-system costs.
Supply chain reliability is assured through automated production lines, enabling high-volume orders with minimal lead times. The size of 400W solar panel also aligns with container optimization—up to 744 units per 40HQ—cutting freight expenses for global traders. Ultimately, its bankable warranties and third-party validations position it as a low-risk choice for long-term PV investments.
As a leading manufacturer in the solar industry, we specialize in high-quality 400W panels with the precise size of 400W solar panel demanded by international B2B partners. Our state-of-the-art facilities employ Tier 1 production processes, from automated cell stringing to electroluminescence testing, ensuring zero-defect modules. With over a decade of export experience to 80+ countries, we understand the nuances of customs compliance and logistics for seamless delivery.
Our commitment to innovation includes R&D investments in TOPCon upgrades, keeping our size of 400W solar panel ahead of market curves. Rigorous quality controls, including PID testing and EL inspections on 100% of production, deliver panels that exceed industry benchmarks. Partnering with us means accessing customizable solutions, from black-frame aesthetics to extended warranties, tailored for your project's success.
What is the exact size of 400W solar panel?
The standard size of 400W solar panel is 1722mm in length, 1134mm in width, and 30mm in thickness, providing an optimal balance of power and portability.
How does the size of 400W solar panel impact installation?
Its compact dimensions facilitate single-person handling and fit standard racking systems, reducing labor costs by up to 20% compared to bulkier panels.
Is this 400W solar panel suitable for high-wind areas?
Yes, certified to withstand 2400Pa wind loads, the robust frame and size of 400W solar panel ensure stability in typhoon-prone regions.
What efficiency can I expect from the size of 400W solar panel?
Efficiencies range from 20.6% to 21.3%, with real-world performance validated by independent labs for trustworthy output projections.
Does the size of 400W solar panel support bifacial applications?
Absolutely; optional bifacial glass adds 10-30% rear-side gain, ideal for elevated or reflective ground mounts.
What warranties cover this product?
12-year product warranty and 25-year linear power warranty guarantee at least 84.8% output, reflecting our confidence in the size of 400W solar panel's longevity.
Can the size of 400W solar panel be customized?
While standard dimensions are optimized for mass production, minor customizations like cable length or frame color are available for bulk orders.