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Primary or secondary energy: Solar energy is primary
Renewable or no renewable: Solar energy is renewable
Traditional or alternative energy: It is alternative
Brief definition: The solar energy comes from the sun. This energy can be catch it with machines.
Advantages: It's renowable, this means thet we always have it when it's day and sunny. It doesn't pollute.
Problems: If it's cloudy we can't get energy because the thunders from the sun doesn't arrives