First Solar 440W Thin Film All-Black Bifacial Solar Panel FS-6440A-P-B Wholesale 27 panels per pallet

The FS-6440A-P-B represents a groundbreaking advancement in solar technology as the world's first bifacial thin film CdTe module. This cutting-edge solar panel leverages advanced Cadmium Telluride (CdTe) semiconductor technology to deliver superior real-world energy performance with the added benefit of bifacial energy yield. Unlike conventional crystalline silicon panels, First Solar's proprietary thin film technology generates more energy per nameplate watt thanks to exceptional temperature performance, superior spectral response, and enhanced shading behavior—now amplified by the ability to capture reflected light from the rear side of the module.

The innovative under-mount frame design is a standout feature of the Series 6 Plus Bifacial. This durable anodized aluminum frame provides the cleaning and snow shedding benefits of a frameless module while protecting edges against breakage. The frame delivers a sleek, all-black aesthetic that's perfect for ground mount and carport installations. Novel design solutions include revolutionary SpeedSlot™ mounting features that deliver the industry's fastest installation times and lowest mounting hardware costs by combining the robustness of bottom mounting with the speed of top clamping. The dual junction box system further optimizes module-to-module connections and eliminates the need for wire management.

First Solar stands behind this bifacial module with industry-leading warranty coverage: 12 years of product protection and an impressive 30-year linear performance warranty. The company guarantees 98% of rated power at warranty start, with minimal degradation of just 0.6% annually after the first year, ensuring at least 80.6% of original performance after 30 years of operation.

• 440 W frontside power output (449 W at Bifacial Name Plate Irradiance)
• Up to 268 thin-film CdTe cells with bifacial capability
• 17.5% module efficiency
• 15±5% bifaciality factor for enhanced energy yield
• 1500 V DC maximum system voltage
• TE Connectivity PV4-S connectors
• 12-year limited product warranty and 30-year linear performance warranty

Revolutionary Bifacial Technology for Maximum Energy Production

An already impressive frontside efficiency of 17.5% is enhanced by anti-reflective coated glass, First Solar's advanced thin film technology, and now bifacial capability that captures reflected light from surfaces beneath the module. The bifaciality factor of 15±5% provides additional energy yield, particularly effective in ground mount and carport installations with reflective surfaces. The module is completely immune to Light Induced Degradation (LID) and Light and Elevated Temperature Induced Degradation (LeTID) – power losses that plague crystalline silicon panels. Under standard test conditions, the FS-6440A-P-B delivers 440 W of reliable frontside power output, with up to 449 W when accounting for bifacial gain.

Superior Performance at High Temperatures

Exceptional performance as temperature rises is the hallmark of an excellent temperature coefficient. This panel's efficiency will drop by just -0.32% for every 1.8°F increase over 77°F – significantly outperforming conventional crystalline silicon modules in hot climates and ensuring maximum energy production year-round. The nominal operating cell temperature of 43°C further demonstrates the module's thermal efficiency.

Quality and Reliability

The FS-6440A-P-B undergoes rigorous quality checks throughout First Solar's vertically integrated, end-to-end manufacturing process. Manufactured under one roof with 100% traceable QA/QC, each module is produced with highly automated facilities ensuring globally consistent quality. Each module is independently tested and certified to IEC standards and beyond, with reliable performance that exceeds requirements in high temperature, high humidity, extreme desert, and coastal applications. First Solar's commitment to quality, safety, and reliability ensures globally consistent performance you can depend on.

Exceptional Reliability and Degradation Resistance

First Solar guarantees minimal deterioration over the next 30 years. Performance will decline by no more than 2% during the first year and then by no more than 0.6% annually thereafter. After 30 years of operation, your modules will retain at least 80.6% of their original performance – among the best degradation rates in the industry. This 440 W bifacial First Solar panel also comes with a substantial 12-year product warranty, including the industry's first and only cell cracking warranty – protecting against manufacturing defects and power loss from cell cracking.

A Panel Built to Handle Extreme Conditions

The robust glass-on-glass construction with heat-strengthened front and back glass, combined with advanced laminate encapsulation and edge sealing, makes this bifacial module exceptionally weather-resistant. The module can withstand loads up to ±2400 Pa (both positive and negative), handling hail, high winds, and heavy snow with ease. Operating temperature range spans from -40°C to 85°C.

The panel is also rigorously tested for extended durability, including salt mist corrosion (IEC 61701), dust and sand resistance (IEC 60068-2-68), extended stress testing (IEC TS 63209-1), long-term sequential stress testing, and thresher testing – ensuring reliable performance in harsh agricultural, coastal, and desert environments. The module is PID resistant and exceeds industry standards for durability.

Outstanding All-Black Bifacial Design with SpeedSlot™ Installation

The panel features a premium all-black bifacial design with an anodized aluminum under-mount frame that delivers a sleek, modern appearance perfect for ground mount and carport installations. The frame provides edge protection while maintaining the aesthetic appeal of a near-frameless design and allowing light to reach the bifacial rear surface. First Solar's thin film technology naturally produces uniform black cells on both sides, ensuring a smooth, sophisticated aesthetic from every angle.

The innovative SpeedSlot™ mounting system revolutionizes installation efficiency by delivering the industry's fastest installation times and lowest mounting hardware costs. This design reduces the number of fasteners required while maintaining structural integrity, resulting in faster installation and significantly lower mounting hardware costs – making it ideal for large-scale commercial and utility projects.

Size

79.69" × 49.02" × 1.93"

Weight

74.96 lb