Green Renewable and Alternative Energy Sources

Nothing. Who said it was bad?

i am doing a power point presentation on wind electricity and i am on the how part..i am having trouble using the write words…i know how it works and everything but dont really know how to summerize it i guess…

so basically i am asking forsome one to summerize it 4 me…..

here is the info:

Windpower units have blades that turn, and a generator that is turned by the blades. The generator looks like a motor, but instead of moving when electricity runs it, turning it makes electricity.

Large companies get windpower units that make AC (alternating current), and they connect the generators on the windmills to the power grid, which carries it to the user.
There are two kinds of electricity, AC and DC (alternating current and direct current). The power grid uses AC because it is much better suited to transmitting it long distances through the power grid. DC is used by batteries and in automobiles. It it handier to use, but cannot be economically transmitted long distances.

Small wind power applications could just run wires, typically 3 wires, to your house or farm. You plug your TV, light, or other load into the wires from the generator to run it.

This type of setup, where the windpower directly runs AC (alternating current) to your house works well with gasoline powered generators, because they run at an exact speed all the time. Thus, the electricity always has a constant frequency. Windmills tend to speed up and slow down as the wind changes speed. This means that your TV and other appliances would only work right when the windmill was going the exact correct speed.
To get around this problem, most small windpower applications generate DC (direct current). This is used to charge batteries, kind of like car batteries. A device called an inverter runs off the batteries and makes AC. It has sockets on it that you can plug your TV or other applicance into, or it can be connected to the wires in your house or business.

some corrections and comments.

Windpower units (wind turbines) have blades on a shaft that can rotate when the wind hits them , and a generator that is turned by the shaft. The generator looks like a motor, but instead of moving when electricity runs it, turning it makes electricity.

Large companies have wind turbines that make AC (alternating current), and they connect the generators on the windmills to the power grid, which carries it to the user.

There are two kinds of electricity, AC and DC (alternating current and direct current). The power grid uses AC because it is much better suited to transmitting it long distances through the power grid. DC is used by batteries and in automobiles. It it handier to use, but cannot be economically transmitted long distances.

Small wind power applications could just run wires, typically 3 wires, to your house or farm. You plug your TV, light, or other load into the wires from the generator to run it.

Above not true, as the output changes as wind speed changes, and a changing voltage is not good for a TV or lights.

This type of setup, where the windpower directly runs AC (alternating current) to your house works well with gasoline powered generators, because they run at an exact speed all the time. Thus, the electricity always has a constant frequency. Windmills tend to speed up and slow down as the wind changes speed. This means that your TV and other appliances would only work right when the windmill was going the exact correct speed.

Above is incorrect. delete it, and use the info below on batteries.

To get around this problem, most small windpower applications generate DC (direct current). This is used to charge batteries, kind of like car batteries. A device called an inverter runs off the batteries and makes AC. It has sockets on it that you can plug your TV or other applicance into, or it can be connected to the wires in your house or business.

does anyone know how much of the world is powered by solar energy?
and
what are some positive side effects of solar energy, if any?

Well technically the first answer is right, the entire world is powered by solar energy if you consider the fact that oil coal and gas are products of decomposed plants etc over a time period of millions of years.

As for solar energy facts, if we are talking about solar energy in the form of electricity from solar panels then its less than 1 percent as far as I know.

If you count in hydro electric and wind power ( wind and rain are also caused by the sun) its a bit more but still not a significant amount. But for some easy and simple explanations try the following:

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