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1/11/2017 Pender Project (Wind Power) ­ Google Slides

Pender Project (Wind Power)  [email protected]

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1 Background... Layout Them e... Transition...

 

2 Wind Power

An alternative energy source

Mrem Megahed, Eric Stigers, Janyia Williams
Juliana Rodriguez - 7 odd

Economist Questions
How much does this energy source cost per kW hour?
The starting levelized cost was 8.2 cents per kilowatt hour that re ects installation
costs of $2,000 per kilowatt of capacity. Renewable resource has no fuel cost.
Electricity consumers and utilities to lock-in known electricity rates for 20 to 30
years through contracts called Power Purchase Agreements.
How much has the cost of this technology risen or fallen over time?
The prices have fallen over time. It has fallen one third on average. Wind turbine
prices over the past decade has examines how price per kilowatt costs have
declined in recent years, after having previously doubled over the period from

2002 through 2008.

3 Economist Questions (continued)

What happens when energy is collected/created that exceeds the needs of the Wind Power
consumer?
An alternative energy source
Batteries can store electricity generated by wind turbines and these can be used at
a later time when there is no wind. In this situation, energy generated is converted

into compressed air. This is usually stored in large above-ground tanks or in
underground caverns.

Is wind power subsidized?

The federal government has been subsidizing the construction of wind and solar
facilities with no end in sight. In fact, the wind power subsidy, because it is an open

entitlement and it has been increasing in cost. Last year, the wind power subsidy
cost federal taxpayers $12 billion.

4 Economist Questions (continued)

How much electricity can one wind turbine generate?

The output of a wind turbine depends on the turbines size and the winds speed
through the rotor. An average onshore wind turbine with a capacity of 2.5 3 MW
can produce more than 6 million kWh in a year enough to supply 1,500 average EU

households with electricity.

5 Where can turbines be placed?
Turbines can be placed at very high elevation to capture the wind. Believe it or not, turbines can be
placed in water. They are placed in the water because the wind speeds are higher out there in the Mrem Megahed, Eric Stigers, Janyia
Juliana Rodriguez - 7 odd
oceans and bodies of water.

How is electricity made?

The generator is connected to the turbine. The generator uses the spinning shaft of the turbine,
which rotates the rotor. Then, the electromagnetic induction comes in whenever the rotor is
spinning in the core. That is creating the electricity.

6

7 Click to add notes

What makes up turbines?

The horizontal turbine has three parts to it. There is the front part, the nacelle, and the tower.
The tower has the yaw drive which is connected to the yaw motor. Inside the nacelle you have the
low-speed shaft which is connected to the gearbox. The gearbox has a brake on it. The gearbox is

connected to the generator. The generator has a controller. On the back of the nacelle, there is
anemometer and a wind vane. The front of a turbine has blades which is connected to a rotor. The

pitch is on the blades.

The vertical turbine has two hubs; the upper hub and the lower hub. The guy wire is a

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