"Renewable Energy Renewable"
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: World set up for oil Relatively Cheap Disadvantages: 40 years supply readily available CO2 causing global warming Smog Economic skills to develop global carbon credit system Oil wars Your Challenge: 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: 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: 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: Possible subsidence Effects on ecosystems Harder to get Your Challenge: Develop systems to find geothermal fields Renewable Energy: Solar power Renewable Energy: Solar power 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 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 Deep Water turbine option (30-100m) Shallow water turbine option (10-30m) Possible Turbine Arrays Foveaux Strait Energy Conservation Reduce Reuse Recycle What kind of people do we need? Can do attitude Creative Enthusiastic Persistent Leaders with a long-term vision for NZ People who are aware of environmental issues Employees Wanted – Apply Within 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 Study Options Science Environmental studies Engineering Business Languages Politics Diplomacy & international relations Entrepreneurship