At the Alinta Wind Farm one is surrounded
by 54 of the world's largest wind turbines.
Each wind turbines towers 78 metres above the landscape with
blades stretching 41 metres.
At capacity, the Alinta Wind Farm will generate 90 megawatts
of power - enough to supply electricity to 60,000 homes.
This is one of Australia's largest wind energy facilities.
Each year, the clean energy created here will displace 400,000
tonnes of greenhouse gas emissions produced by traditional
fossil fuel based power generation.
This is the equivalent of removing 80,000 cars from Western
Australia roads each year.
Why build a wind farm here?
The Mid West is one of Australia's windiest regions.
Wind speeds in this area average about 20-25 km/h during
the cooler months, but from October-March, wind speeds
reach an average of 25-35 km/h as a result of the strong
sea breeze, coupled with a consistent easterly breeze in
The Alinta Wind Farm is located in open farming country,
allowing for optimum spacing of turbines.
There are minimal obstructions in the landscape and the
smooth topography can have a 'speed up' effect on wind.
Wind farming is compatible with agricultural activities
such as stock grazing and broadacre crops.
Less than 1 per cent of farm land within the site has been
used for the Alinta Wind Farm.
How do the wind turbines work?
Turbines at the Alinta Wind Farm have internal computers
that monitor the wind's direction and speed.
Electricity production begins at winds above 14 km/h.
The amount of electricity produced continues to increase
until the turbines reach their maximum or 'rated' capacity
at winds around 36 km/h.
Stronger winds do not make the blades turn faster.
The blades rotate at a regular 14.4 revolutions per minute
and operate at their capacity until the wind speed reaches
The turbines automatically shut down and turn out of the
wind to avoid potential damage when the wind speed goes beyond
At 14.4 revolutions per minute, the blade tip is traveling
at more than 220 km/h.
The electricity generated at the wind farm is fed directly
into the State electricity grid via an on site substation,
and is sold by Alinta to its own customers.
Total capacity 90 megawatts
Tower height 78 meters
Tower material Welded steel
Tower weight 130 tonnes
Maximum power wind speed 36 km/h
Start-up wind speed 14 km/h
Cut-off wind speed 65 km/h
Rotor speed 14.4 rpm
Rotor diameter 82 metres
Blade length 41 metres
Blade weight 7.5 tonnes
Blade material Carbon /Wood /Glass/Epoxy
Number of turbines 54
Capital cost $210 million
Greenhouse gas savings 400,000 tonnes/a
Homes supplied (equivalent) 60'000
Builder/operator Renewable Power Ventures (RPV)
Power purchase agreement Alinta
Alinta is one of Australia's leading energy infrastructure companies.
Alinta operates, manages and part-owns more than
72,000 km of electricity lines Australia wide.
To find out more about Alinta visit their website at