Wind Energy

Spinning its way to the top!

What is wind energy?

  • This is when natural wind, from our atmosphere, turns a wind turbine's blades, which produces energy. Then, this energy is used in homes and in other buildings.
Big image

How it works

  1. Wind blows around a turbine's blades.
  2. The blades absorb or trap this energy and rotate.
  3. This causes the shaft inside to spin.
  4. Then, gearbox begins to spin because it is connected to the shaft.
  5. Lastly, since the gearbox is connected to the generator, it turns on so electricity is produced.
Big image

Advantages

  • This is a clean way to make energy
  • Doesn't release any greenhouse gases
  • It is renewable and it uses hardly any water
  • Puts tons of money into our economy yearly
  • Wind is free
  • Makes energy that we can use for electricity

Disadvantages

  • These wind turbines cost more than a fossil-fueled generator would
  • The rotor blades produce a lot of noise
  • Wind turbines aren't visually appealing
  • Many birds and bats have been killed by being hit by the rotors
  • It isn't always windy
  • Some windy sites are difficult to access because they are in remote locations

Extra Information

  • There is a wide range to a wind turbine's cost because it depends of how many kilowatts it produces:

-10 kilowatt machine, that can power a large home, costs between $50,000 to $80,000 to be installed

-utility scale turbine costs between $1.3 million to $2.2 million per MW (megawatt)

  • Turbine parts are transferred with semis, but companies try to build their buildings in the most wind efficient places.
  • Wind turbines are monitored 24/7
  • A normal turbine is checked once or twice per year to change oil and filters, and to have their bolts secured.