Solar Module -A single photovoltaic Module/Panel is an assembly of connected solar cells that will absorb sunlight as a source of energy to develop electricity. A group of PV modules (also called PV panels) is wired into an extensive array called PV array to gain a required current and voltage. When you make up your mind to buy a solar power system, you will encounter three types, and as a layman, it becomes challenging to understand the difference between these technologies. So let’s have a brief understanding of these below:

1. Solar cells, Modules and
Panels

2. • A solar PV module
consists of several solar
cells connected in series
and parallel with large
current and voltage
output than s single solar
cell
• Interconnecting smaller
solar cells
• Thin flim technology –
Cells are interconnected
during the process of
manufacturing
• Silicon wafer.

3. Solar cell availability range
• Power generated per unit area is usually in the range of - 10mW/cm2 to
25 Mw/cm2.
• Cell efficiency – 10% to 25%.
• Maximum are of a single wafer based silicon solar cell – 15*15 =225
cm2.
• With 15% cell efficiency the peak power generated by a single cell is
3.37 Wp.
• PV module - range of 3 WP to 300 WP.

4. Solar PV Module
• transparent top surface - glass
• encapsulant is EVA (ethyl vinyl acetate)
• rear layer is Tedlar
• a frame around the outer edge.
• Top surface:
• high transmission of light in the
• wavelength range of 350 nm to 1200 nm
• reflection - low