Both mono and poly solar panels can convert sunshine into electricity, and they are made from crystalline silicon solar cells. While mono solar panels use monocrystalline solar cells, or single crystalline solar cells, and poly solar panels use polycrystalline solar cells, or multi crystalline solar cells. The crystalline purity of the mono solar cells is much higher than poly solar cells.

Then, what is the difference between mono and poly solar panels?
Factors | Mono Solar Panels | Poly Solar Panels |
Aesthetics | black color | dark Blue |
Efficiency | 21% -24%, mono PERC solar cell efficiency | 18%-20% poly solar cell efficiency |
Cost | more expensive | more affordable |

Mono solar cell

Poly solar cell
AestheticsThe main difference in aesthetics between mono and poly solar panels is their color: mono solar panels are usually black, while poly solar panels are dark blue.
EfficiencyMono solar panels are more efficient than poly solar panels. Mono PERC solar cells have 21% – 24% efficiency, while poly solar cells only have 18% – 20% efficiency.
Cost
Mono solar panels are more expensive than poly solar panels. If you have limited space for solar panel installation, better to choose mono solar panels. With the improvement of monocrystalline silicon technology and the reduction of cost, the price difference is not too much, especially for small sized customized solar panels, thus more and more customers prefer to choose customized mono solar panels for their solar applications.

Mono Solar panel, Tempered Glass Laminated

Poly Solar Panel, PET laminated