Solar power is the conversion of sunlight into electricity. Sunlight can be converted directly into electricity using photovoltaics (PV), or indirectly with concentrating solar power (CSP).
One fundamental difference between renewable energy and non-renewable energy is that non-renewable resources are purchased as they are consumed, with renewable resources, you pay up front with installation costs.(1)
1. "http://en.wikipedia.org/wiki/Solar_power"
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