Though costly to implement, solar energy offers a clean, renewable source of power. 3 min read Solar energy is the technology used to harness the sun's energy and make it useable. As of 2011 ...

The movement of wind and water, the heat and light of the sun, the carbohydrates in plants, and the warmth in the Earth—all are energy sources that can supply our needs in a sustainable way. A variety ...

Wind is a clean source of renewable energy that produces no air or water pollution. And since the wind is free, operational costs are nearly zero once a turbine is erected. Mass production and ...

Tidal energy is a renewable and sustainable source of energy. As the Moon moves around the Earth, its gravity pulls everything on Earth towards it, including the sea. Moving water in the sea ...

Renewable energy refers to energy from sources that are constantly replenished - like the water for hydroelectric dams that is topped up by the rain, or the sunlight that reappears every day for solar ...