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