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solar energy

Solar energy is amazing. On average, each square metre of the Earth's surface receives 164 watts of solar energy (we'll explain this in detail later). In other words, you can place a very powerful (150 watt) table lamp on the surface of the earth per square meter, illuminating the entire planet with the energy of the sun! Or, in other words, if we cover half of the Sahara with solar panels, we can generate enough electricity to support the world. This is the benefit of solar power: it has a lot of features - far more than the features we can use.

But there are also disadvantages. The energy from the sun reaches the Earth in the form of a mixture of light and heat. Both are very important - light makes plants grow, provides us with food, and heat keeps us warm enough to survive - but we can't use the sun's light or heat to run a TV or car. We must find ways to convert solar energy into other forms of energy that we can use more easily, such as electricity. And this is the role of solar cells