The Differences between Black and Blue Solar Panels on Rooftops


Solar panel technology is a way of converting sunlight into electricity. A solar power system generally also consists of a battery storage module, which used to store the electricity for use. It is a fantastic idea to store energy from the sun and save the expenses of traditional power supply. Solar panel technology is being improved day by day. Now it is also used on large levels like in industries and malls etc. You may have seen solar panels on roofs of hospitals, schools, and colleges, where they fulfill large part of, or even all energy demands. We can save power as well as our electricity bill by using solar panel technology. 

Now solar technology has been polished and improved, thus resulting in the introduction of two main categories of solar panels. The two main categories of solar panels are:

  • Monocrystalline solar panels
  • Polycrystalline solar panels

These two categories of solar panels are not new, they have been used since the invention of solar panels but now they have innovative modifications. The purpose of both panels is the same, to extract solar energy and convert it into useful power. Monocrystalline solar panels look black so they are known as black solar panels, while polycrystalline panels give blue look so they are also known as blue solar panels. They both are made of silicon, so there are only minor differences in material.

To compare these two types of solar panels, first read some details about both solar panels.

Monocrystalline solar panels

Monocrystalline solar panels are known as premium products. They are made up of silicon wafers. Silicon is crafted into bars and these bars are then processed into wafers. These silicon wafers are then used to form a monocrystalline solar panel. This solar panel is called “mono” because it is made up of a single crystal of silicon making it more efficient. The single-layer improved the electricity flow and allows the electrons to pass through more space.

Polycrystalline panels

Polycrystalline solar panels are also made up of silicon. They have multiple fragments of silicon which are then sliced in the form of wafers. Due to the use of multiple fragments, they are called polycrystalline solar panels. The electrons have to pass through each cell and multiple layers so they find less space to move.


Let’s compare two types of solar panels based on their properties:

  • The monocrystalline solar panel gives black hue while polycrystalline solar panel gives a blue hue 
  • The monocrystalline solar panel is expensive while the polycrystalline solar panel is comparatively cheap 
  • Black (mono) solar panel has a single layer of silicon while the blue (poly) solar panel has multiple layers of silicon
  • The black solar panel has a life span of a minimum 25 years while the blue solar panel has a life span of up to 25 years
  • The efficiency degradation of the black solar panel is lower than that of the blue panel when the environmental temperature rises

Despite the differences, both are widely used in solar projects of all sizes around the world.

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