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Electricity GenerationWorld Facts

By itself, electricity is anexceptionally clean form of energy

but It is to be consider that how it isgenerated.

Today, worldwide, about 70%electricity is produced from fossilfuels (about 50% from coal, and 20%from natural gas).

Nuclear power accounts for another20%, leaving about 10% coming fromrenewable resources like wind, waterand solar.

50%

20%

20%10%

Power Generation

Coal

Natural Gas

N.PowerRenewable Sources

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HOW HYDROPOWER WORKS

Driven by the sun, water

circulates throughout the earth

through evaporation and

precipitation.

In this hydrologic cycle, water

evaporates from lakes and

oceans, forms clouds, falls to

the ground as rain or snow,

then finds its way back to the

ocean.

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Hydropower facilities generate

electricity by utilizing the energy

of falling water.

Hydroelectric plants can be built

along rivers, streams, or canals,

but dams are necessary for a

reliable water supply. A dam

creates a reservoir that stores

water which can be released

depending on the demand for

electricity.

Inside Hydropower Plant

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In this process electricity generated by themeans of burning fossil fuel and coal occurswhen they are burned at high temperature in afurnace that is known as the boiler. Water isrelease through the system in series of pipes,which is heated at extreme pressure and

temperature to produce steam. At this stage,the high-pressurized steam produce.

This process caused the fan to spin at highspeed at approximate 1,500 mph, which inturn caused a magnet within the rotor toproduce electricity.

Now that the electricity is produced, it movesfrom the power plant through a system oftransmission into our homes, offices anddevices. All alone this linear system ofelectricity production, about 20-30% of thetotal energy produced is lost in the form ofheat energy

HOW COAL POWER WORKS

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2. Hydroelectric power plants withaccumulation reservoirs offerincomparable operationalflexibility, since they can

immediately respond tofluctuations in the demand forelectricity.

The flexibility and storagecapacity of hydroelectric power

plants make them more efficientand economical in supporting theuse of intermittent sources ofrenewable energy, such as solarenergy or Aeolian energy.

Proses of Renewable Energy - Continue

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3. River water is a domesticresource which, contrary tofuel or natural gas, is notsubject to marketfluctuations.

In addition to this, it is theonly large renewable sourceof electricity and its cost-benefit ratio, efficiency,flexibility and reliability assistin optimizing the use ofthermal power plants.

Proses of Renewable Energy - Continue

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4. The hydroelectric life cycle

produces very small amounts of

greenhouse gases (GHG). In

emitting less GHG than power plants

driven by gas, coal or oil,

hydroelectricity can help retard

global warming.

Although only 33% of the available

hydroelectric potential has been

developed, today hydroelectricity

prevents the emission of GHG

corresponding to the burning of 4.4

million barrels of petroleum per day

worldwide.

Proses of Renewable Energy - Continue

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5. Hydroelectric power plants don't

release pollutants into the air. They

very frequently substitute the

generation from fossil fuels, thus

reducing acid rain and smog.

In addition to this, hydroelectric

developments don't generate toxic by

products.

Proses of Renewable Energy - Continue

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1. Burning fossil fuels releases

carbon dioxide (Co2), a powerful

greenhouse gas, that had been

stored in the earth for millions of

years, contributing to global

warming.

It leaves behind harmful

byproducts upon combustion,

thereby causing a lot of pollution.

Mining of coal leads to irreversible

damage to the adjoining

environment.

Cons of Non-renewable (Coal Power) Energy

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5. Coal is cheap and abundant, with anestimate of over 300 years supply ofeconomic coal deposits stillaccessible, which is why we are stillusing so much of it, despite the highlevels of pollution and greenhouse gasemissions it produces.

In the US, studies have revealed thatnearly 24,000 early deaths werereported due to the harmful emissions

from coal-fired power plants.

Causes of deaths include lung cancer,asthma attacks, and heart attacks.

Cons of Non-renewable (Coal Power) Energy

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