Best Alternative Energy Sources

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Alternative energy is a term used for some energy sources and energy storage technologies, generally referring to nontraditional energy with low impact on the environment. In general, the energy that is obtained from a natural source such as tides, water movements, wood, sun, etc. Are considered to be alternative energy sources. Some of these sources are exhaustible and other sources are renewable. Here is a brief overview of the different types of alternative energy sources.

Hydroelectric power

Hydroelectric or water energy is physically represented by the capacity of the water system to work through its flow; because the water cycle in nature is considered a form of renewable energy. The energy is produced in hydroelectric plants and power plants that produce electricity based on falling and streaming water. Hydroelectric power can be considered the first renewable source of electricity. This is due both to lower cost price of the intake, and tradition, existing already in the field.

Wind energy

Wind energy is determined by air currents that form uneven warming of the Earth, and these currents generate kinetic energy sources known as wind power. Wind energy is a renewable source of energy, captured by using turbines that generate electricity. The wind source is available on a global scale half of this potential is in off-shore locations (in the high seas or oceans). Theoretically, home wind energy can cover global demand for electricity.

Solar energy

Solar energy is a renewable energy source that is produced by light and sun radiation. The lifetime of the Sun is estimated at 5 billion years, which leads to the conclusion that it represents an inexhaustible source of energy. The total energy captured by the sun depends on the availability of day-night cycle, the latitude of the place where it is captured, the seasons and so on. There are several ways to capture / converse the solar energy. Solar energy is used in practice for:

  • Generation of electricity using photovoltaic panels;
  • Thermal heating panels;
  • Direct heating.

Geothermal energy

Geothermal energy is a form of renewable energy that is obtained from the heat built up in the Earth’s interior. Steam and hot water, which is collected especially in areas with volcanic and tectonic activities are used for heating and most importantly for electricity production. Earth’s temperature increases considerably with proximity to the center. Geothermal high temperature involves pumping this water to the surface where, through heat exchanges, forms vapors, which are used later in turbines, as in the case of thermal power plants.

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