What is solar energy?
Solar energy comes from the light of the sun, which means it is a renewable source of energy. We can use its light to create pollution free electricity.
How does solar energy work?
When the sun shines on solar cells, they absorb its energy causing a chemical reaction that generates electricity.
The electricity generated by these solar cells or photovoltaic system can be used at homes and factories or it can be stored in a battery. This stored energy then can be used at night.
How can solar energy be used?
The simplest photovoltaic systems power many of the small calculators and wristwatches used everyday. More complicated systems provide electricity to pump water, power communications equipment, and even provide electricity to our homes.
For example, solar energy is commonly used for domestic lighting, street lighting, water pumping and railway signals just to mention a few.