I wonder if they are noisy

bignosemousie,

sidegik googled it and got lucky, here is the answer:


"The state is funding two projects that could result in electricity being generated from small wind turbines on suburban roofs, Premier Alan Carpenter says.
Local inventor Graeme Attey has been given $34,000 to commercialise a modular wind turbine system that sits on a roof and can generate household power from the daily sea breeze, known as the Fremantle Doctor, that sweeps across the city.
Mr Carpenter said the system was small, quiet, had no visible rotating blades, and was expected to be relatively cheap.
It can also operate in variable urban winds.
"And the...

I wonder if they are noisy

bignosemousie,

sidegik googled it and got lucky, here is the answer:


"The state is funding two projects that could result in electricity being generated from small wind turbines on suburban roofs, Premier Alan Carpenter says.
Local inventor Graeme Attey has been given $34,000 to commercialise a modular wind turbine system that sits on a roof and can generate household power from the daily sea breeze, known as the Fremantle Doctor, that sweeps across the city.
Mr Carpenter said the system was small, quiet, had no visible rotating blades, and was expected to be relatively cheap.
It can also operate in variable urban winds.
"And the system is modular, so you can produce as much energy as you want by simply connecting units together,'' the premier said.
"I am told that five units could produce enough electricity to run an average household.''
- source:http://www.windaction.org/news/10424