Renewable energy sources

• Pros of using renewable energy source:

  • Low running cost
  • Don't produce pollution
  • Don't damage the environment
  • Cheaper every year
  • Can be replenished as it's used up
• Cons of using renewable energy sources:

  • High up front cost
  • Making them produces pollution
  • Dependent of the weather
  • Can't increase supply in times of high demand
  • Take up lots of space
  • Visual and noise pollution
• Geothermal energy is a source of thermal energy, which is generated and stored in the earth's crust.
• Hydroelectric power stations use water falling from a height to turn turbines which will generate electricity.
• Pros of HEP and tidal barriers as energy sources:

  • Low running cost
  • Don't produce greenhouse gasses
  • Reliable
  • Immediate response to increased demand
• Cons of hydroelectric cams and tidal barriers:

  • Damage/destroy habitats
  • Flood areas