wind and solar

• Wind power capture


  1. Use of wind turbines

  2. Turbines placed in exposed areas like malls or coasts where there's lots of strong winds

  3. Turbine has a generator inside

  4. Blades spin in the wind and turn the generator

  5. Generator converts kinetic energy from the movement into electrical energy

  6. Electrical energy transported to the national grid
• Solar power generation


  1. Solar cells often in the form of solar panels

  2. Solar cells generate electric currents directly from sunlight

  3. Works well in low energy devices like watches and calculators

  4. Works well in remote regions not connected to main power grid

  5. Now used on a much larger scale to generate electricity for entire towns
• Pros of wind and solar energy

  • Very low running costs
  • Don't produce any pollutants, including no carbon dioxide
• Cons of wind and solar energy

  • High upfront costs
  • Process of making them often produces pollutants, particularly making solar cells
  • Dependent on the weather - if the wind doesn't blow or the sun doesn't shine then they don't generate any electricity
  • No way to increase supply in terms of peak demand
  • Take up a lot of space, especially because you need so many of them to produce a serious amount of power
  • Wind turbines don't look very nice and are too noisy
• Neither wind nor solar damage the environment at all and both are getting cheaper every year