Main Form of Renewable Energy Resources - PowerPoint PPT Presentation

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Main Form of Renewable Energy Resources


Renewable energy is energy which is generated from natural sources i.e. wind, sun, rain etc.what is Renewable energy resources?, How does energy compare to other renewable energy sources? – PowerPoint PPT presentation

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Title: Main Form of Renewable Energy Resources

Renewable Energy Resources
  • Renewable energy is generally defined as energy
    that comes from resources which are naturally
    replenished on a human timescale such as
    sunlight, wind, rain, tides, waves, and
    geothermal heat.
  • Renewable energy resources exist over wide
    geographical areas, in contrast to other energy
    sources, which are concentrated in a limited
    number of countries. Rapid deployment of
    renewable energy and energy efficiency is
    resulting in significant energy security, climate
    change mitigation, and economic benefits
  • Renewable energy resources and significant
    opportunities for energy efficiency exist over
    wide geographical areas, in contrast to other
    energy sources, which are concentrated in a
    limited number of countries.

Renewable Energy
Main Form of Renewable Energy
  • Wind Energy.
  • Hydro Energy.
  • Solar Energy.
  • Biomass Energy.
  • Geothermal Energy.

Wind Energy
Wind Energy
  • Wind is caused by huge convection currents in the
    Earth's atmosphere, driven by heat energy from
    the Sun. This means as long as the sun shines,
    there will be wind.
  • wind energy is believed to be five times total
    current global energy production, or 40 times
    current electricity demand.
  • This could require large amounts of land to be
    used for wind turbines, particularly in areas of
    higher wind resources. Offshore resources
    experience wind speeds of 90 greater than that
    of land.

Hydro Energy
Hydro Energy
  • The most common type of hydroelectric power plant
    uses a dam on a river to store water in a
  • Water released from the reservoir flows through a
    turbine, spinning it, which in turn activates a
    generator to produce electricity. But
    hydroelectric power doesn't necessarily require a
    large dam.
  • Hydroelectric energy is a term usually reserved
    for large-scale hydroelectric dams.
  • This includes marine current power, tidal power
    and ocean thermal energy conversion.

What is Dam
  • Dams are massive barriers built across rivers and
    streams to confine and utilize the flow of water
    for human purposes such as irrigation and
    generation of hydroelectricity.
  • It is a medium to store water at a height.
  • Most of hydropower plant rely on dam.

Hydro Power Plant
Solar Energy
Solar Energy
  • Solar energy is radiant light and heat from the
    sun harnessed using a range of ever-evolving
    technologies such as solar heating,
    photovoltaics, solar thermal energy, solar
    architecture and artificial photosynthesis.
  • The large magnitude of solar energy available
    makes it a highly appealing source of
  • Solar radiation along with secondary solar
    resources such as wind and wave power,
    hydroelectricity and biomass account for most of
    the available renewable energy on Earth.
  • Passive solar techniques include orienting a
    building to the Sun, selecting materials with
    favorable thermal mass or light dispersing
    properties, and designing spaces that naturally
    circulate air.

Application of Solar Energy
  • Solar lighting.
  • water Heating.
  • Heating,Cooling Ventilation
  • Electrical generation.

Biomass Energy
Biomass Energy
  • Biomass is a renewable energy resource derived
    from the carbonaceous waste of various human and
    natural activities. It is derived from numerous
    sources, including the by-products from the
    timber industry, agricultural crops, raw material
    from the forest, major parts of household waste
    and wood.
  • Biomass is biological material derived from
    living, or recently living organisms.
  • In the context of biomass for energy this is
    often used to mean plant based material, but
    biomass can equally apply to both animal and
    vegetable derived material.
  • To many people, the most familiar forms of
    renewable energy are the wind and the sun. But
    biomass (plant material and animal waste) is the
    oldest source of renewable energy, used since our
    ancestors learned the secret of fire..

Biomass Sources
  • Agricultural Crops Residues.
  • Sewage.
  • Municipal Solid Waste.
  • Animals Residues.
  • Industrial Residues.
  • Forestry Cropes Residues.

Geothermal Energy
Geothermal Energy
  • Geothermal energy is the heat from the Earth.
    It's clean and sustainable.
  • Resources of geothermal energy range from the
    shallow ground to hot water and hot rock found a
    few miles beneath the Earth's surface, and down
    even deeper to the extremely high temperatures of
    molten rock called magma.
  • There is also the potential to generate
    geothermal energy from hot dry rocks.
  • It is the thermal energy contained in the rock
    and fluid (that fills the fractures and pores
    within the rock) in the earth's crust.

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