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ENERGYWhere does our Energy

come from?

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Where does our energycome from for?

Electric light

Mobile phones

Power for your mp3

TV Hot Water

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Energy for these things come fromEnergy Resources, that are converted

into energy that we can easily use.

Electricity is the main form of energy

that we use and can power or charge

what we need energy for.

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Energy in Northern IrelandThere are 3 power stations:

1. Coolkeeragh Power Station, near

Londonderry. Uses gas to generateelectricity

2. Ballylumford Power Station, IslandMagee. Uses gas to generate electricity

3. Kilroot Power Station, Carrickfergus.Uses coal to generate electricity

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To generate electricity1. You need an energy source, e.g. coal

2. This is burnt to produce heat or steam3. The heat or steam then drives a turbine

4. The turbine then can drive a generator

5. The generator then produces electricity6. The electricity is then transported incables to where it is needed

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Energy Resources can bedivided into 2 categories:

1. Non-Renewable Resources

For example coal, oil, gas, uranium or ligniteOnce used these resources CANNOT be used again

2. Renewable ResourcesFor example wind, water or solarThese resources can be used over and over again

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Non-Renewable Resources:

COALWhat is it? Formed underground from decaying plant materialHow much left in the world?

About 200 yearsAdvantages? Plenty left Mining is getting more efficientDisadvantages?

Pollution: CO2 emissions (linked to global warming), SO2(linked to acid rain)

Heavy & bulky to transport

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Non-Renewable Resources:

OILWhat is it? Formed underground from decaying animal and plantmaterial

How much left in the world?

About 40 years!Advantages?

Quite easy to transport

Efficient in producing energy

Less pollution than coal

Disadvantages? Not much left

Pollution: air and danger of water pollution through spills

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Non-Renewable Resources:

NATURAL GASWhat is it? Formed underground from decaying animal and plant

materialHow much left in the world?

About 60 yearsAdvantages? Clean, least polluting of all non-renewables Easy to transport

Disadvantages? Some air pollution Danger of explosions

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Non-Renewable Resources:

NUCLEARWhat is it? Uses uranium, naturally found in some rocksHow much left in the world? Not knownAdvantages?

Not much waste and few CO2 emissions released, as wellas, few other greenhouse gases

Disadvantages?

High cost to build and close down power stations. Waste is radioactive. Problem with getting rid of waste

safely

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Non-Renewable Resources:

LIGNITEWhat is it? Formed underground from decaying plant materialHow much left in the world? In Northern Ireland, it is thought at least 30 years

(SOURCE: www.geographyinaction.co.uk/Issues/Lignite)

Advantages? For Northern Ireland: a local resource, good for

generating electricityDisadvantages?

Air pollution, scarring of landscape through open-castmining

High moisture content

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Why is the term, FOSSIL FUELused for coal, oil, gas and

lignite?

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Renewable Resources:WINDWhat is it? It the movement of air from

high to low pressure

How much left? Endless

Advantages? No pollution

Disadvantages? Winds change all the

time, not predictable

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Renewable Resources:SOLARWhat is it? Energy from the sun

How much left? EndlessAdvantages? No pollution, can be usedin remote areas

Disadvantages? Can be expensive,

needs sunlightAt night it doesnt work

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Renewable Resources:BIO-ENERGYWhat is it? Biomass and Biogas

fermented animal or plant waste

vegetation from sustainable sources

How much left? Endless

Advantages? Good availability

Disadvantages? Can be expensive to set up

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Renewable Resources:

HYDROWhat is it? Movement of water drives a

turbine

How much left? EndlessAdvantages? No CO2emissions, can control

flooding and provide a good water supply toan area

Disadvantages? Large areas maybe flooded.Visual and water pollution

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Renewable Resources:GEOTHERMAL

What is it? Heat from the ground often

used to heat waterHow much left? A lot

Advantages? No CO2emissions

Disadvantages? Expensive and can only beused in certain parts of the world

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Renewable Resources:WATER & TIDAL

What is it? Movement of sea drives turbines

How much left? EndlessAdvantages? Can produce a lot of electricity,

no CO2emissions

Disadvantages? Not many suitable sites

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Renewable Energy is increasingin Northern Ireland

TARGET: In Northern Ireland, 12% ofelectricity generated by renewables by2012

NOW: Wind energy supplies frombetween 3-7% of our energy needs

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Where does our Energy comefrom?

From renewable and non-renewable

energy sources Renewable energy sources are now

increasingly being used

Renewable energy: The future ofenergy, today!