Have you ever seen solar panels on the roof of a house? Solar energy is widely used today in many countries.
Many governments around the world are trying to encourage this alternative energy source.
ln Germany,for example,they launched the '10000 Solar Roofs' project. There is also a similar project in ltaly, whilst in the United States there is a project for one million solar roofs. The world's largest solar park is the Bavaria Solar Park in Germany. lt is about the size of 56 football pitches and has 57,600 solar panels.