solar panel
JA Solar JAM78S30 GR
The JA Solar JAM78S30 GR is a monocrystalline, N-type, half-cell TOPCon solar panel with a size of 2465×1134×35mm, featuring a module efficiency of 21.8% and a power output range of 585-610W. It is certified under CE, TUV, and ISO standards, with a 12-year product warranty and a 30-year linear performance warranty. Designed for large-scale PV projects and commercial use, it incorporates gapless GFI technology and IP68 junction box protection (documents 2, 5, 6).
Images
Pros and cons
Pros
Strengths called out by generated product content.
- Known for high efficiency ratings (20.9% to 21.9%)
- All-black design with no visible grid lines
- Good performance in low-light conditions and high reflection environments
- Tier 1 manufacturer with a solid reliability track record
- Bifacial capability with some reports of effective rear-side reflection
- Comparable quality to other top-tier brands like Trina and Longi
- Long warranties (typically 12-year product and 30-year linear degradation)
Cons
Tradeoffs and constraints to review before choosing.
- Some concerns about the use of Chinese manufacturing and associated ethics
- Potential issues with supply chain transparency and labor practices
- Panels are relatively large and heavy, which may complicate installation
- Effectiveness and degradation over time may be difficult to verify without robust monitoring
- Price may be slightly higher compared to similar tier 1 options like JA Solar
Notes
Context that does not fit neatly as a pro or con.
- Panel size and weight vary; larger panels may be less suitable for residential roofs
- Bifacial gain potential is modest (around 2-3%) depending on installation conditions
- Some users prefer brands with longer or more comprehensive warranties
- Performance can be influenced more by inverter choice and installation quality than panel brand
Electrical Specifications
Physical Dimensions
- Width
- 1,134 mm
- Height
- 35 mm
- Weight
- 30.5 kg
Design
Product Information
- Release Year
- 20263