Types of solar panel:-

a) Solar panel 12V 4 watt
b) Solar panel 12V 10 watt
c) Solar panel 12V 12 watt
d) Solar panel 12V 40 watt

A solar panel is a device that collects and converts solar energy into electricity or heat. It transfers energy from the sun into electricity or heat which can be used by (for example) nearby buildings. Solar panels were in use over one hundred years ago for hot water heating in homes. In the field of photovoltaics, a photovoltaic module is a packaged interconnected assembly of photovoltaic cells, also known as solar cells. An installation of photovoltaic modules or panels is known as a photovoltaic array. Solar thermal energy is a technology for harnessing solar energy for heat. This is very different from solar photovoltaics, which convert solar energy directly into electricity.