Solar panels generate free power from the sun by converting sunlight to electricity with no moving parts, zero emissions, and no maintenance. PV modules are made of mono/poly-crystalline silicon cells.The solar panel, the first component of a electric solar power system, is a collection of individual silicon cells that generate electricity from sunlight.
BENEFITS AND USES
It has characteristics of high efficiency, long life cycle, hail storm proof and easy installation.
Products are widely used in roofing systems, street lamp, grid connected PV-power systems and equipment's.
TYPES OF SOLAR PANELS
On the basis of purity of Silicon. They are classified as:
i) Monocrystalline panels
ii) Polycrystalline panels
Monocrystalline silicon is made from a single-crystal. Here, the electrons have more room to move around, thus are “more efficient” or better at turning sunlight into electricity.
Monocrystalline solar panels have the highest efficiency rates since they are made out of the highest-grade silicon. The efficiency rates of monocrystalline solar panels are typically 15-20%.
Monocrystalline silicon solar panels are space-efficient. Since these solar panels yield the highest power outputs, they also require the least amount of space compared to any other types. Monocrystalline solar panels produce up to four times the amount of electricity as thin-film solar panels.
Monocrystalline solar panels live the longest. Most solar panel manufacturers put a 25-year warranty on their mono-crystalline solar panels.
Tend to perform better than similarly rated polycrystalline solar panels at low-light conditions.
Unlike mono-crystalline-based solar panels, polycrystalline solar panels do not require the Czochralski process. Raw silicon is melted and poured into a square mold, which is cooled and cut into perfectly square wafers.
The process used to make polycrystalline silicon is simpler and cost less. The amount of waste silicon is less compared to mono-crystalline.
Polycrystalline solar panels tend to have slightly lower heat tolerance than mono-crystalline solar panels. This technically means that they perform slightly worse than mono-crystalline solar panels in high temperatures. Heat can affect the performance of solar panels and shorten their life spans. However, this effect is minor, and most homeowners do not need to take it into account.
A PV system that is designed, installed, and maintained well will operate for more than 20 years. The basic PV module (interconnected, enclosed panel of PV cells) has no moving parts and can last more than 30 years. The best way to ensure and extend the life and effectiveness of your PV system is by having it installed and maintained properly. Experience has shown that most problems occur because of poor or sloppy system installation.