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					Renewable Energy

Our World is Changing

Energy demand growing faster than supply

Canterbury Manufacturers Association 2006

Energy Sources
Sources of energy can come from non-renewable or renewable resources.

Non-Renewable Fossil Fuels  Oil (Petroleum)  Coal  Natural Gas Nuclear

Renewable Wind Geothermal Biomass Solar Hydro-Electric Wave Tidal

Non-Renewable Energy:

Oil
Advantages:
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World set up for oil Relatively Cheap

Disadvantages:
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40 years supply readily available CO2 causing global warming Smog Economic skills to develop global carbon credit system Oil wars

Your Challenge:
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Political skills to reduce consumption (especially in rich countries)  Economic skills to develop global carbon credit system

Non-Renewable Energy:

Coal
Advantages:  Cheap  Plentiful - at least 1000 years supply
Disadvantages:  Smog  CO2 causing global warming  Releases radio active waste Your Challenge:  Political skills and options to create alternatives.  Develop clean burning coal stations

Non-Renewable Energy:

Gas
Advantages:  Cheap  Natural  Popular Disadvantages:  Existing gas fields running out  Highly flammable  Create cavities in the Earth Your Challenge:  Research how best to utilise the gas e.g. home heating

Non-Renewable Energy:

Nuclear Power
Advantages:  High energy production  No greenhouse gases  Cheapest energy source in Europe  Fusion power could last forever Disadvantages:  Uranium will last only 70 years with current consumption  Disposing of radioactive waste

Your Challenge:
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Currently have nuclear fission, need to develop nuclear fusion.

Summary Non-Renewable Resources

Renewable Energy:

Wind Power
Advantages:
 

No CO2 emissions NZ is a windy country

Disadvantages:
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Unpredictable power Hard to store Visual & acoustic pollution

Your Challenge:


Design and build them

Renewable Energy:

Geothermal Power

Renewable Energy:

Geothermal Power
Advantages:
  

Potential for growth in NZ No adverse emissions Reliable

Disadvantages:
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Possible subsidence Effects on ecosystems Harder to get

Your Challenge:


Develop systems to find geothermal fields

Renewable Energy:

Solar power

Renewable Energy:

Solar power
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Advantages:  Each household can produce some of their power  Usually for hot water heating  Excellent for remote locations
Disadvantages:  Unpredictable sunshine hours  Bulky batteries with limited storage capacity  Expensive capital cost Your Challenge:  Explore technologies for low cost solar power e.g. paint

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Renewable Energy:

Biomass
Advantages:  Carbon neutral  Whey used by Gull for petrol with 10% biomass  May be able to use wood processing waste Disadvantages:  Cars are not all suited to using biomass Your Challenge:  Explore biomass technologies for New Zealand

Renewable Energy:

Hydro-electric power

Renewable Energy:

Hydro-electric power
Advantages:  No CO2 emissions  Currently generates about 60% of NZ power  Cheap to generate from existing power plants Disadvantages:  Expensive to build new power stations  Impacts on the environment  Getting resource consent Your Challenge:  Develop micro hydro-electric power systems

Renewable Energy:

Wave Energy

Renewable Energy:

Wave Energy
Advantages:  Many possible locations in New Zealand Disadvantages:  High capital costs  Reduces tidal flow and causes silt build up  Needs a suitable site where waves are consistently strong  Must withstand very rough weather  Noise Your Challenge:  An infant technology requiring development

Renewable Energy:

Tidal Energy
Advantages:  Predictable tidal currents  Unaffected by weather  Cook Strait could produce as much electricity as all of NZ’s current electricity with no visual pollution  Foveaux Strait is another excellent site Disadvantages:  Possible effect on mammals due to sound  Attachment to the seabed Your Challenge:  Infant technology requiring development

Proposed Tidal Farm Area

Possible Turbine Arrays Cook Strait

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Deep Water turbine option (30-100m)

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Shallow water turbine option (10-30m)

Possible Turbine Arrays Foveaux Strait

Energy Conservation
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Reduce
Reuse

Recycle

What kind of people do we need?
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Can do attitude Creative Enthusiastic Persistent Leaders with a long-term vision for NZ People who are aware of environmental issues

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Employees Wanted – Apply Within
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Biofuel Scientist – develop technology to convert wood waste Turbine Installer – maritime skills needed for Cook Strait Industrial Designer – aesthetic design for solar panel walls Business Manager - export NZ micro-hydropower system to China Diplomat – negotiate international carbon credits Environmentalist – assess impact of wave power plant

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Study Options
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Science Environmental studies

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Engineering
Business Languages Politics Diplomacy & international relations Entrepreneurship


				
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