“How exactly can we prevent damage to solar panels during transportation? ” , one of our potential customer John one day asked. He meets too many damages every day, during shipping from Asia to USA . We shared with him our blog article How To choose Solar Panel Corner Protectors , and we introduced our 5th generation solar panel frame corner protector . Fortunately , our solution and product satisfied him.
According to the data we have collected, there is often 1-10% pv modules broken in each project. And over 30% of the solar panel damages occur during transportation. Let’s see below what types of solar panel defects are related to transport.
| common types of Solar Panel Defects | impact | cause | Is it transport-related? |
|---|
| Microcracks | Reduces output, worsens over time | Mechanical stress | Yes |
| Delamination | Water intrusion, corrosion, and electrical failure | Poor lamination or moisture ingress | No |
| Hot Spots | Fire risk and reduced efficiency | Shading, cell damage, or faulty bypass diodes | No |
| Potential-Induced Degradation (PID) | Power loss up to 30% or more | High voltage systems, grounding issues | No |
| Snail Trails (Discoloration) | Cosmetic issue, but often linked to deeper cell damage | Microcracks and chemical reactions | No |
| Junction Box Failures | Safety hazard and electrical disconnection | Poor-quality components or impact | Yes |
| Glass Breakage | Water ingress and performance loss | Hail, impact, or thermal stress. | Yes |
| Bypass Diode Failure | Full string output loss | Electrical surges or manufacturing defects. | No |
| Dust Build-up | Create shade and reduce energy production | No maintenance or clean-up | No |
| Aluminium frame defects | PV modules lifetime or aesthetics loss | Stress during manufacturing, shipping, or installation | Yes |
| Criterion | Horizontal Packing | Vertical Packaging |
|---|
| Space Efficiency | Lower density; uses more pallet footprint per panel stack | Higher density; saves up to 30?% floor space |
| Handling & Ease | Simpler to load/unload; fewer tipping risks | Requires skilled strapping and lifting equipment to avoid tipping |
| Protection & Damage Risk | Needs cushioning between panels to avoid micro?cracks | Minimizes top?down pressure but risks edge chipping if separators fail |
| Cost Efficiency | Lower initial packaging cost; may incur damage?related losses | Potentially higher bracing cost but lower shipping LTL rates per panel |
| Stability & Safety | Very stable under vibration; low centre of gravity | Higher centre of gravity; needs anti?tilt supports to meet safety standards |
| Moisture & Ventilation | Can trap moisture between layers if over?wrapped | Better airflow between panels, reducing condensation risk |
| Unpacking Time | Fast access¡ªjust remove top wrap and lift off panels | Slower¡ªmust loosen straps and unbrace upright stack carefully |
| Equipment Requirements | Standard forklift with flat forks | Forklift with edge?protecting attachments or gantry lifter recommended |
| Client Preferences: | End users and installation worker prefer as the unpack job is really easy | Manufacturer and distributor like best as it reduces both risk and cost |
All the jobs need to slow down with enough carefullness . Sometimes , a whole pallet could be damaged like the pallet drop off the forklift . A longer forklift tip can damage another back pallet .
The most danger comes from vibrations, shocks during the transit . Even weather conditions have an influence on the panel quality .
Storage place should be flat and no rain can reach the panels . If you stack the panels Horizontal , be sure not to stack too many panels .
- The most important thing is to fasten your panel tightly enough. It is easy to understand a big square wood would stand very stably. While if you cut the wood into many pieces and you see the board slide on each other easily.
- Using proper corner protectors for solar panels. At present , we have worked out our fifth generation solar modules corner guards . It could be used in both vertical and horizontal packaging.
- Using delicate packing . It’s very unbelievable if you try to save cost on the packing materials . The packaging is crucial for preventing damage during subsequent handling and transportation.
- Using proper colorful warning labels . All the person related to the panels should be given a instruction before they work.
