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Monday 6 April 2015

Special Edition 130

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How an outback town proposes to switch off fossil fuels

http://reneweconomy.com.au
By Giles Parkinson on 26 March 2015


The outback town Coober Pedy in remote South Australia will be able to
turn off its fossil fuel generators for at least half of the year under a
proposed solar-wind-battery hybrid model to be built by the town’s main electricity supplier.

Coober Pedy – known as the Opal Capital of Australia – was last year named as the site for
the solar-wind hybrid installation that Energy Developments says could be the template for off-site
generation elsewhere in Australia, and indeed elsewhere around the world.
Energy Developments, the largest operator of off-grid installations in Australia, currently uses little or
no wind or solar. But at Coober Pedy, under a program sponsored by the Australian Renewable Energy Agency, it
will install 3MW of wind power, 2MW of solar, and 1MW/250kWh of battery storage.
Energy Developments says this will likely reduce diesel consumption by 70 per cent, and could mean that the 3.9MW
diesel generators currently powering the town can be switched off more than 50 per cent of the time. The town has a
peak demand of around 3MW peak and an average load of around 1.5MW.
A typical day’s generation – with wind and solar – may look something like this ….


Energy Developments says that wind and solar are complimentary, with wind blowing most at night, and
solar – of course - producing during the day. It says it envisages whole days when the diesel generators are not used at all.
This will echo the experience of Hydro Tasmania, which has introduced a solar-wind-storage hybrid on King Island, and is also
proposing to do the same on Flinders Island. Hydro Tasmania is helping design the project
Energy Developments will call for tenders for suppliers this month, and expects construction to begin in October.
It says that it expects the modularised design is scaleable both up and down for different applications.










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