WIND POWERWIND POWERTravis TolandTravis Toland

OverviewOverview

HistoryHistory

How It WorksHow It Works

ApplicationsApplications

FutureFuture

HistoryHistory Invented in Sistan, Afghanistan in the 7Invented in Sistan, Afghanistan in the 7thth

century.century. Used to grind corn or pump water to the Used to grind corn or pump water to the

surface.surface. Early windmills became obsolete during the Early windmills became obsolete during the

industrial revolution as steam and internal industrial revolution as steam and internal combustion engines were more powerful.combustion engines were more powerful.

Windmills were used as flood control in the Windmills were used as flood control in the Netherlands as 60% of the country lies Netherlands as 60% of the country lies below average sea level.below average sea level.

HistoryHistory

Combining windmills together Combining windmills together allowed for effective flood control.allowed for effective flood control.

How It WorksHow It Works

Wind spins rotor.Wind spins rotor. Rotor spins low-Rotor spins low-

speed shaft speed shaft through gearbox.through gearbox.

Gears spin high-Gears spin high-speed shaft speed shaft through through generator.generator.

ApplicationsApplications

Many countries use land Many countries use land based and offshore wind based and offshore wind farms to generate power.farms to generate power.

The U.S., Germany, and The U.S., Germany, and Spain are the three global Spain are the three global leaders in wind power leaders in wind power generation and generation and consumption.consumption.

ApplicationsApplications

Small scale wind power can Small scale wind power can be used to power individual be used to power individual homes or even small homes or even small communities.communities.

While power is not being While power is not being used, the wind turbine can used, the wind turbine can charge batteries for power charge batteries for power storage.storage.

This can reduce or even This can reduce or even eliminate the dependence on eliminate the dependence on grid power consumption.grid power consumption.

FutureFuture

Stanford scientists believe that there Stanford scientists believe that there are 72 TW of wind power available on are 72 TW of wind power available on land or near-shore. That’s equivalent land or near-shore. That’s equivalent to 54,000 megatons of oil per year.to 54,000 megatons of oil per year.

That is more than 5 times the world That is more than 5 times the world energy consumption in all forms.energy consumption in all forms.

Marginal cost of wind energy once the Marginal cost of wind energy once the plant is built is less than 1 cent per plant is built is less than 1 cent per kilowatt-hour.kilowatt-hour.

Questions?Questions?

Title: Wind PowerTitle: Wind Power Name: Travis TolandName: Travis Toland Sources:Sources: http://en.wikipedia.org/wiki/Wind_Pohttp://en.wikipedia.org/wiki/Wind_Po

werwer http://www.stanford.edu/group/efmhhttp://www.stanford.edu/group/efmh

/winds/global_winds.html/winds/global_winds.html