The Starfish Hill wind farm was the first wind farm to be established in South Australia.
Constructed in 2003 at a cost of $65m it consists of 23 turbines
across two clusters between Delamere and Cape Jervis.
They have a combined generating capacity of 34.5 megawatts of electricity
to meet the needs of approximately 18,000 households.
Each turbine consists of a 68 metre tower. At the top of this sits the nacelle
which houses a gearbox that transfers the wind
from the 32 metre blades to electricity via a generator.
Some fast facts:
minimum wind speed required: 4-5 metres per second (16kph)
optimal wind speed: 15 metres per second (56 kph)
the turbines are shut down when winds reach gale force speeds (90 kph)
the blades rotate at between 11 and 17 revolutions per minute