Polycrystaline Solar Panel :Often Have A Blue Solar Cell Made Of Multiple Silicone Crystaline,It Less Efficient and Budget Friendly 

Monocrystaline Solar Panel:They Usually Has Higher Energy Output with Single Black Cells Made Of Crystaline 

1. Efficiency*: Monocrystalline panels have higher efficiency rates (up to 22.2%) compared to polycrystalline panels (up to 21.2%).
2. Appearance*: Monocrystalline panels have a uniform dark color, while polycrystalline panels have a speckled blue appearance.
3. Cost*: Polycrystalline panels are generally less expensive than monocrystalline panels.

Choosing Between Mono and Poly
1. Space constraints*: If you have limited space, monocrystalline panels might be a better choice due to their higher efficiency.
2. Budget*: If budget is a concern, polycrystalline panels could be a more affordable option.
3. Aesthetics*: If you prefer a uniform appearance, monocrystalline panels might be preferred.

Both Options Have Their Benefits
Ultimately, the choice between monocrystalline and polycrystalline solar panels depends on your specific needs and priorities.