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Solar power (green power)
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Solar power (green power) Presentation Transcript

  • 1. SOLAR POWER THE GREEN POWER… -BY1 SREEKANTH SHASTRY V JSSATE
  • 2. CONTENTS2  OBJECTIVES  INTRODUCTION  A LOOK AT WORLDS ENERGY RESOURCES CONSUMPTION  REMAINING RESERVES  WHY FOCUS ON SOLAR ENERGY  AVERAGE INSOLATION ON THE GLOBE  EFFICIENCY  LIFESPAN  RECENT ADVANCES  ADVANTAGES & LIMITATIONS  CONCLUSION
  • 3. OBJECTIVES3  To understand the potential & need for solar energy as a solution for the upcoming concerns of fossil fuels & global warming.  To visualize solar energy as a major power source in the future.
  • 4. INTRODUCTION4  The word Photovoltaic is a combination of the Greek word for Light and the name of the physicist Allesandro Volta.  Photovoltaic’s (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect.
  • 5. A LOOK AT WORLDS ENERGY RESOURCES CONSUMPTION5
  • 6. REMAINING RESERVES AS OF 20096
  • 7. CONTD…7  In 2008, total worldwide energy consumption was 474 exajoules with 80 to 90 percent derived from the combustion of fossil fuels.  In 2009, world energy consumption decreased for the first time in 30 years (-1.1%) or 130 Mtoe (Megaton oil equivalent), as a result of the financial and economic crisis
  • 8. WHY FOCUS ON SOLAR ENERGY?8 The world has a renewable usable energy flux that exceeds 120 PW a day Or 3.8 YJ/yr dwarfing all non- renewable resources. It has been estimated that the extraction of fossil fuels will be at peak by 2020. The demand for fossil fuels gets higher & higher making generation of power costlier.
  • 9. Contd…9  At this rate, The fossil fuels will get depleted in nearly 120 to 150 years.  Major implementations of solar power from now on can meet the power demand with less consumption of fossil fuels.  Global warming is still an issue. Usage of fossil fuels as a major source is not going to help against global warming
  • 10. AVERAGE INSOLATION ON THE GLOBE10
  • 11. EFFICIENCY11 The efficiency of RSLE‘s new thin film solar cell exceeds 35%. A multi-junction solar cell reached 40.7 % efficiency level.
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  • 13. LIFESPAN13  The life of a solar panel depends upon various parameters. - Materials used - Amount of solar insolation received  The range of lifespan varies from 20 to 30 years with a efficiency drop up to 25% over the rated efficiency.
  • 14. RECENT ADVANCES14  Silicon wafers  Thin film pv’s  Multi-junction pv’s  Multi-layered pv’s  Sun Tracking Systems  Maximum Power Point Tracking (MPPT) controllers
  • 15. ADVANTAGES15  Solar energy is a renewable energy source  It is highly reliable & is available abundantly.  Other renewable energy sources become negligible.  Solar cells require very less maintenance and they have a long life too.
  • 16. Contd…16  Running costs are very low.  Solar cells are very silent in their working.  Photovoltaics have zero emissions, making it clean & green energy.  Solar panels have materials that the manufacturer will take them back at their own expense for recycling.
  • 17. LIMITATIONS17  Solar energy is not available at night, Storage options may cost high.  At polar & surrounding regions the density of radiation is very less.  Initial cost involved in photovoltaics is high, which is a major concern.  Photovoltaics are not highly feasible for domestic purposes.
  • 18. Contd…18  Its does not have a short term payback period.  Solar panels just doesnt come like that. They include emissions during manufacturing stage.  They cannot be completely recycled.
  • 19. CONCLUSION19  Its time to accelerate the power generation with photovoltaic’s.  The world is already feeling the crisis heat of fossil fuels.  In future, we may have the much more worst scenarios dealing with fossil fuels.  So, Solar energy is a great option which is renewable and will be always present on the globe.
  • 20. References20  http://www.renewableenergyworld.com  http://poweredbysolarpanels.com  http://www.greenoptimistic.com  http://www.solarpanelsplus.com  http://www.solarpower2day.net  http://www.sciencebuddies.org  http://www.solarserver.com  http://en.wikipedia.org
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