| Solar power is the main source of energy for the | | | | electrons leave there position they form a hole. |
| humane beings. Life on earth cannot exist without | | | | When many electrons leave the surface, this |
| solar energy. This energy is completely free for | | | | creates a negative and positive voltage potential |
| the human beings to consume and is also | | | | similar to that of the terminals of the battery. |
| environmental friendly. Solar energy is now | | | | When this surface is connected with external |
| considered to be the biggest alternative of the | | | | devices they produce electricity. |
| current source of producing electricity. The main | | | | Solar cells don't produce too much power out. |
| reason is that sources like burning fuel, coal, gas | | | | These cells are connected to modules which form |
| or nuclear energy to produce electricity is | | | | arrays. These arrays can be made up of ten or |
| becoming expensive and also is very harmful to | | | | hundreds of modules each one producing a |
| the environment. But solar energy on the other | | | | considerable amount of energy. There is no |
| hand is completely free and very effective. We | | | | restriction on the amount of modules; you can |
| have only been able to harvest 1-3 percent of | | | | connect as many as you want to according to |
| the solar energy that comes to the earth. If we | | | | your need. The performance of these modules |
| look at the figures we find that. | | | | depends upon the amount of sunlight, weather |
| 1. The total amount of earth reserves responsible | | | | condition and location of the panels. The energy |
| for producing energy are equivalent to only 20 | | | | provided by these modules is in DC form and can |
| days of sunlight. | | | | only run small appliances but if you need more |
| 2. 40 minutes of sunlight if harvested completely | | | | power than an inverter is connected to the |
| can produce energy for the entire planet for a | | | | modules which converts this DC power into AC |
| time period of 1 year. | | | | power. Initially these cells were made to provide |
| 3. We are only harvesting 2-3 % of this energy | | | | electricity in remote areas but now they are even |
| which isn't very good. | | | | used for providing electricity to residential and |
| Solar cells or photovoltaic cells are used to | | | | commercial areas. |
| convert solar energy into electricity. These cells | | | | Solar cells are also long life lasting, having a low |
| are basically made up of silicon alloys and are on | | | | cost and are environmental friendly as they don't |
| panels which capture energy form the sun. | | | | produce a by products. Use of solar power is also |
| sunlight contains photons which when hit the | | | | very effective way for generating electricity. You |
| surface of the cells gets reflected pr absorbed, | | | | are using natural source of energy to fulfill you |
| these absorbed particles are the one responsible | | | | own needs. As time will pass solar power will |
| for providing you with the energy. When more | | | | become the main source of energy for the |
| photons hit the surface they allow the materials | | | | human beings. |
| surface atoms to release electrons. When these | | | | |