Wind turbines

A wind turbine harnesses energy from the wind to
produce electricity. The most common design is of
three blades mounted on a horizontal axis, which is
free to rotate into the wind on a tall tower or mast.
The blades drive a generator either directly or via a
gearbox (generally for larger machines) to produce
electricity.

Wind turbines can be mounted on masts that are
free-standing or tethered with wire guys, or on buildings.
The greatest amount of power will be generated if
turbines have a constant supply of steady wind, and
advice should be taken on where to site the turbine
to optimise output.

The electricity can either link to the grid or, in the case
of off-grid systems, charge batteries. Modern designs
can be very quiet in operation.

 

_{Last site update: 30th June 2009}