Renewable Energy: For The Average Citizen
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Renewable Energy: For The Average Citizen

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A powerpoint created to educate those who have little or no knowledge on the facts, benefits & reasons for incorporating renewable energy sources.

A powerpoint created to educate those who have little or no knowledge on the facts, benefits & reasons for incorporating renewable energy sources.

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Renewable Energy: For The Average Citizen Presentation Transcript

  • 1. Renewable Energy
    For The Average Citizen
    Prepared by Joe Rando
  • 2. What are Renewable Energy sources?
    • They are sources of energy that can be replenishednaturally and are inexhaustible because our use of them today won’t damage their availability tomorrow.
    • 3. They come from things we take for granted each day like: the sun’s rays, the power of the wind, the molten core of our earth & water’s gravitational flow.
    • 4. They are the sources of energy that can meet the world’s demands without dismantling the stability of our Earth today.
  • 5. Types of Renewable Energy
    There are many types of Alternative Energy sources being put to use today, with the major contributors being:
    Solar
    Wind
    Geothermal
    Hydro
    In further slides we will explore a bit of how each energy source works & what they have to offer the increasing energy demand we face.
    First we must understand why we need Renewables.
  • 6. Negative Effects of Fossil Fuels
    • Fossil fuels emit pollution that is harmful to the plants, animals & humans that breathe it in.
    • 7. The resources we rely on are depleting and will soon run out.
    • 8. We are dependent on foreign countries to import fuel.
    • 9. The 3 main sources: oil, coal and natural gas make up approximately 88% of the world’s energy usage, leaving us helpless when they do run out.
    • 10. The carbon dioxide that is released when fossil fuels are burned is thinning our protective atmosphere and causing Global Warming which in turn is raising our sea levels due to Polar Ice Caps melting.
  • Solar Energy
    Solar Photovoltaic: uses solar cells made of silicon to gather sun’s rays which cause an electrical field. Seperating positive & negative electrons creates and electrical charge in the metal plate at the bottom of the panel. Wires carry the DC charge to an inverter which transforms it to AC use for your home.
    Solar Thermal (Solar Domestic Hot Water): starts with flat plate solar collectors that have copper coils filled with non-toxic fluid running through them. As the sun heats the collectors and the fluid in the coils get hot enough it flows through a heat exchanger where it heats water stored in a tank and then is circulated back through the solar collector.
  • 11. Facts & Benefits of Solar Energy
    Extremely reliable
    Very low maintenance
    It is a clean & easily accessible energy source
    Government tax credits & incentives
    Ability to store your excess electricity for future use
    Option to sell power back to electric providers reducing the need for power plants
    Freedom from power companies and opportunity to reduce or eliminate utility bills
  • 12. Solar Thermal
    Solar PV
  • 13. Wind Energy
    How does it work?
    Wind generated electricity begins with the resistance of the blades against the wind rotating a shaft which carries the energy to the generator where the kinetic energy (energy of motion) is transformed into electricity.
    How you may ask? Well as the rotating blades turn the shaft they cause magnets to rotate around a conductor which produces current. As the voltage is produced by the current it is forced through conductive wires to your home.
  • 14. Facts & Benefits of Wind Energy
    Most inexpensive source of energy
    Compliments solar power well
    Clean energy
    Low maintenance cost
    World’s fastest growing renewable energy source past 10 years
    Provides income for citizens of rural areas
    Free source of energy that eliminates the association with volatile fossil fuel prices
    Can be harnessed and used efficiently on large or small scales
  • 15.
  • 16. Geothermal Energy
    Where does it mean and how does it work?
    Geo, the Greek word for earth
    Therm, the Greek word for heat
    It literally comes from the heat below the Earth’s surface generated from decay in the Earth’s core. Shallow “hot spots” such as volcanoes and geysers are exploited and tapped with deep wells.
    Pumps are then used to bring the fluid to the surface where the immense heat of the fluid than creates steam to turn turbines which creates current for electricity production.
  • 17. Facts & Benefits of Geothermal Energy
    Economical development in rural areas
    Can be used for heating purposes in home and businesses
    Used for agricultural purposes such as greenhouses
    Good use of land in rural areas
    Provides constant comfort & balances heat
    Low maintenance costs
    No external condensing pumps= silent operation
  • 18.
  • 19. Hydropower
    It is easy to guess, from the name, where the energy comes from but how does it work?
    Yes it comes from water. More importantly water’s gravitational flow or desire to flow down stream.
    Dams are built to hold back water but when the water is released it is fed through large turbines at the base of the dam which use the water’s intense flow to turn the turbines and generate large amounts of electricity.
  • 20. Facts & Benefits of Hydropower Energy
    Can generate energy on demand by opening and closing gates
    Reservoirs provide opportunity for recreational activities
    Reservoirs also provide water for irrigation purposes
    Can be utilized on large or small scale operations
    Currently supplies 10-13% of U.S. electricity
    Powering approximately 35 million households
    Provides flood control, wildlife refuges & transportation
    Also provides a steady source of drinking water
    Local form of energy
  • 21.
  • 22. Benefits of Renewable Energy
    Provide a stable, low cost for electricity
    Very minimal environmental impact
    Inexhaustible sources of energy
    Helps developing third world countries
    Reduces our dependency of foreign oil
    Cuts down carbon emissions
    Creates jobs for a new industry
    Better return on investment than any bank
    Government tax incentives
    Low maintenance
    Reduce or eliminate utility bills
  • 23. Why do we need Renewable Energy?
    If we continue forward with out present energy usage, we will leave future generations with:
    An unstable climate, due to ocean currents that are changing.
    An unhealthy & heavily polluted environment.
    Unpredictable storm systems & seasons.
    The need to fight for depleted fossil fuel reserves.
  • 24. The next few slides show:
    U.S. energy usage vs. production
    Global carbon emissions by year
    U.S. carbon emissions by year
    Amount of resources left by our demand
  • 25. U.S. Energy Usage
  • 26. U.S. Energy Production
  • 27.
  • 28.
  • 29.
  • 30.
  • 31. Conclusion
    If we don’t begin to implement use of alternative energy sources we are willingily allowing our planet to be destroyed.
    By increasing our use of Renewable Energy we can create jobs, stop Global Warming and provide future generations with a stepping stone to end our energy crisis.
    We have the opportunity to supply our demands with clean, environmentally friendly energy. That is harnessed from natural, free abundant resources.
    We can make a difference, but the time is now!
    Thank you.