Renewable energy encompasses resources like sunlight, wind, rain, and geothermal heat, which are naturally replenished and widely distributed. Key types include wind energy, hydro energy, solar energy, biomass energy, and geothermal energy, each offering significant benefits for energy security and climate change mitigation. As renewable resources can be harnessed using various technologies, they are increasingly recognized for their potential to meet global energy demands sustainably.

1. Renewable Energy Resources
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2. Introduction
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.

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

4. Wind Energy

5. 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.

6. Hydro Energy

7. Hydro Energy
The most common type of hydroelectric power plant uses a dam on a river to
store water in a reservoir.
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.

8. 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.

9. Hydro Power Plant

10. Solar Energy

11. 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 electricity.
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.

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

13. Biomass Energy

14. 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 Energy

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

16. Geothermal Energy

17. 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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