Solar power is energy, usually in the form of electricity, which comes from sunlight. The scale of the energy conversion project usually determines the technology used. Small systems, like those used to power homes or small businesses usually use photovoltaic cells. Businesses that produce a lot of energy, such as utility companies, often use Concentrated Solar Power systems. Since solar power cannot be produced in the absence of sunlight, some type of energy storage is needed if electricity is to be used at night time.
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