SOLAR PANELS
We don?t want to melt the polar, so we should all use solar!

Multi-crystalline (Polycrystalline) Solar Panels
A polycrystalline cell contains many crystals. It has similar life span to the mono-crystalline cell type, but it has lower efficiency and cost per watt.

Mono-crystalline Solar Panels
A mono-crystalline cell is made of a single crystal. Mono-crystalline solar panels are high efficiency solar panels.

How much watt solar panel we need?
Example we want to power up 5 lights of 20 Watt and we need to use these 5 lights for 3 hours every day. Here first we get a total watt usage. P total = 20 * 5 = 100W. Than we multiply 100 with 3 hours. P daily = 100 * 3 = 300W. We are going to use 300 watt daily. Let us say we are going to have complete sunshine 6 hours each day. Now we divide 300W with 6 hours, so we will get hourly power charge that we need P-hourly = 300 / 6 = 50W. So we need a 50 watt solar panel. But it is recommended to always choose a panel some bigger then we need. Because when solar panel charge the battery so it is wasting some power on charging too.
 

Calculate how much watt solar panel do you need. Here in sample we need 50W.

Quality of solar panels

We recommend to buy solar panels of good quality. If you is really looking for panels that can be used in 20-25 years without have massive loss so we recommend you to buy quality solar panels. Because normal quality solar panels have a about 1% or less yearly loss of energy each year. So it mean if you use them 20 years so they will have a loss percent of 20%. So a 100 Watt panel will produce 20% less then what it produced when it was new. 100 watt minus 20 it is equal 80 watt. After a 20 years usage in direct sunshine a solar panel will produce 80 watt.

If a panel just begin to produce less power just after 1-2 years usage so it is not a good quality. You have just loss your money on bad panels.
 

Advantages

Solar energy is becoming increasingly popular as the world begins to take notice of the burgeoning carbon emission problems that come with burning fossil fuels. But why all the fuss?

Nay-sayers have become less and less vocal as solar energy?s popularity has grown increasingly unhindered. Below I will discuss the advantages and disadvantages of solar energy.
 

• The first and foremost advantage of solar energy is that it does not emit any green house gases.
• Infinite Free Energy
• Decentralization of power
• Going off the grid with solar
• Saving eco-systems and livelihoods
• Solar technology is currently improving in leaps and bounds. Across the world, and particularly in Europe, savvy clean technology researchers are making enormous developments in solar technology.
  
  What was expensive, bulky, and inefficient yesterday, is becoming cheaper, more accessible, and vastly more efficient each week.