Advantages and Disadvantages of the possible futures

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  • Advantages and Disadvantages of possible futures
    • Business as usual (forecasts predict by 2030)
      • Global primary energy demand will rise by 53%
      • Fossil fuels will remain the dominant source of energy worldwide
      • Emissions from electricity generation will account for 44% of energy-related emissions
      • Over 70% increase in the energy demand will come from developing countries due to rapid economic growth and population growth
    • Nuclear
      • By 2008, 439 nuclear reactors were supplying 15% of the worlds electricity
      • Does not produce greenhouse gas emissions
      • Uranium is relatively cheap to mine and reserves should last around 150 years
      • Very cost effective transport as only used in small quantities
      • Produces 1% of global electricity supply
      • 1986 Chernobyl incident highlights the issues
      • Very expensive to build-several billion pounds
      • Nuclear waste disposal is an issue as it remains radioactive for 10,000years
    • Renewable energy with the emphasis on wind power
      • Costs of generating wind today are about 10% of what they were 20 years ago
      • In some areas first generation wind turbines are being replaced with modern turbines which give better peformance
      • NIMBY- people are concerned that turbines could blight their homes and views
      • Suitable areas are often near the coast where land is expensive
    • Energy Conservation
      • Combined Heat and Power - power stations waste 65% of the heat they generate
        • CHP plants can be up to 95% efficient as they can use different fules in the same boiler and cut emisssions
      • Green Taxation
        • aimed at cutting the use of natural resources and encouraging recycling

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