Prepared By: Shakil Raiman

 A renewable energy source is one that will not run out or effectively can be replaced once it has been used. It is infinite source of energy.  Example: Wind energy, tidal energy, solar energy, wood etc.  A non-renewable energy source is one that effectively cannot be replaced once it has been used. It is finite source of energy. It takes millions of years to replace.  Example: coal, gas, petroleum (petrol, diesel etc.), uranium.

 Electricity is not an energy resource, because it has to be generated using other sources of energy.  Heat from nuclear fuel or from burning fossil fuels is used to heat water. This produces high-pressure steam that makes the blades of a turbine spin. The turbine is used to turn the generator which generates the electricity.  Electricity is convenient to transport and use. So all other energy resources is mostly used to produce electricity.

 Advantage:  Renewable so no waste of non-renewable resources  No release of carbon-di-oxide (CO2) gas which is a greenhouse gas  No release of sulphar-di-oxide (SO2) gas which causes acid rain  Low maintenance cost and no fuel has to be paid for  Tourist amenity if a new lake is created for boating or fishing

 Disadvantage:  Only suitable for hilly region with high rainfall  Land has to be flooded so loss of habitants  Unusable during draught as no water in the dam  Occupies a large area so possible loss of scenic amenity

 Advantages:  No fuel is burned so no atmospheric pollution  Nothing has to be transported to the nor any waste disposed of  Coal/oil/gas is not burned so does not increase the “greenhouse” effect  Renewable energy source.

 Disadvantages:  Wind not always strong enough so no electricity is generated  Wind may not match demand for electricity  Sound pollution so loss of tourist  Visual pollution so loss of scenic value.  Kill birds so hamper animal life

 Advantages:  Does not depend on weather  No greenhouse gases  Requires little space  Renewable energy source

 Disadvantages:  Limited sites  Need to drill deep holes  Long time to survey and build  Harmful minerals brought up

 Advantages:  Renewable so no waste of non-renewable resources  No release of carbon-di-oxide (CO2) gas which is a greenhouse gas  No release of sulphar-di-oxide (SO2) gas which causes acid rain  Low maintenance cost and no fuel has to be paid for

 Disadvantages:  Depends on weather  Limited sites  Initial installation cost is high

 Advantages:  Does not depend on weather  Establish and reliable technology  Still large reserves of coal  Coal available in many parts of the world  The process of mining, transportation ad generation employ large number of people

 Disadvantages:  Uses a non-renewable energy resource  Produces CO2 so results in pollution and greenhouse effect  Produces SO2 gas and causes acid rain  Enhance greenhouse effect  Results in large number of solid waste  Waste is slightly radioactive.

 Wish you all very good luck and excellent result.