There are many forms of renewable energy. Most of these renewable energies depend in one way or other on sunlight. Wind and hydroelectric power directly result from differential heating of the Earth’s surface which leads to air moving about (wind) and precipitation forming as the air is lifted. Solar energy is the direct conversion of sunlight using panels or collectors. Biomass energy is stored sunlight contained in plants. Other renewable energies that do not depend on sunlight are geothermal energy, which is a result of radioactive decay in the crust combined with the original heat of accreting the Earth, and tidal energy which is a conversion of gravitational energy.
This type of energy depends on the nuclear fusion power from the core of the Sun. This energy can be gathered and changed over in a couple of various ways. The range is from solar water warming with solar collectors or upper room cooling with solar attic fans for domestic use to the complex technologies of direct conversion of sunlight to electrical energy using mirrors and boilers or photo voltaic cells.
The development of the environment is driven by contrasts of temperature at the Earth's surface because of fluctuating temperatures of the Earth's surface when lit by sunlight. Wind energy can be utilized to pump water or create power, however requires extensive area coverage to produce significant amounts of energy.