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  Polycrystalline Solar Panels (Poly-SI) You can quickly distinguish these panels because this type of solar panels has squares, its angles are not cut, and it has  a blue, speckled look . They are  made by melting raw silicon , which is a  faster and cheaper  process than that used for monocrystalline panels. This leads to a lower final price but also lower  efficiency   (around 15%) , lower space efficiency, and a  shorter lifespan  since they are affected by hot temperatures to a greater degree. However, the differences between mono- and polycrystalline types of solar panels are not so significant and the choice will strongly depend on your specific situation. The first option offers a slightly higher space efficiency at a slightly higher price but power outputs are basically the same.

  Monocrystalline Solar Panels (Mono-SI) This type of solar panels (made of monocrystalline silicon) is  the purest one . You can easily recognise them from the  uniform dark look  and the  rounded edges . The silicon’s high purity makes it one of the  most efficient solar panels , with the newest ones  reaching above 20% . Monocrystalline panels  have a high power output, occupy less space, and last the longest. Of course, that also means they are the most expensive of the bunch. Another advantage to consider is that they tend to be slightly less affected by high temperatures compared to polycrystalline panels.

  The best type of solar panel Monocrystalline solar panels are the best type of solar panel  in terms of efficiency. Their ability to capture sunlight is higher than both polycrystalline panels and thin-film solar panels. This is also why they are more expensive than  cheap solar panels , which are almost always made from polycrystalline. All black solar panels  and most  integrated solar panels  are monocrystalline in nature. Compared to the process for polycrystalline panels, the structure of the silicon is aligned better in mono panels. As a result, they have higher sunlight absorption rates. Monocrystalline panels are made from pure refined silicon in a pulling process. They can also be produced as “passivated emitter and rear contact” (PERC) panels which gives them the ability to reflect back unabsorbed sunlight through a back cell. This gives them a higher efficiency rate than traditional monocrystalline cells. The most efficient type of monocrystall...

  Working principle of Alternator An alternator or synchronous generator works on the principle of the Faraday law of electromagnetic induction just like in other AC generators.  It states that whenever a conductor moves in a magnetic field, an EMF (electromotive force) or current is induced in the conductor which can be found using the  EMF equation of an alternator.   In other words, a conductor placed in a varying magnetic field also experiences EMF and it is used in alternators. The direction of the induced current is determined by  Fleming’s right-hand rule .  If we arrange the thumb, forefinger and middle finger of the right hand, the thumb direction of motion, the forefinger represents induced current and the middle finger represents the direction of magnetic field lines. Therefore, they are all mutually perpendicular.