This is from today's Adelaide Now - it looks like the same site. I can't work out how to put the picture in, which shows the site location, so if someone else can do that, it would help.
$250 million electricity substation for Keswick
May 20, 2009 12:01am
A $250 million electricity substation will be built at Keswick to avoid Sydney-style blackouts that plunged that city into chaos over summer.
It is the centrepiece of $1 billion of infrastructure spending being undertaken by the state's monopoly operator of high-voltage powerlines, ElectraNet, to improve the reliability of its ageing network. The program is adding an extra $9 a year to the average $1100 power bill.
The substation, which will take a direct feed from the Torrens Island Power Station, is also designed to support growth in the southern suburbs, in particular the desalination plant.
The 275,000 volt powerline will be put underground and will involve digging up the route – which includes Port Rd – from next March.
ElectraNet said the $250 million project would be the biggest electricity infrastructure spending in the city for more than two decades.
"The reason we're doing this is to prevent a recurrence of the sorts of things that happened in Sydney and Auckland," executive manager development Greg Rice said.
"Where there's been failure of one item of the transmission network and that's resulted in a cascade failure and lights out."
The state's energy regulator, ESCOSA, ordered ElectraNet to build the substation to protect Adelaide from blackouts in 2006.
It set an operational date of December 31, 2011 "regardless of the cost".
The Keswick substation would provide the city's second high-voltage underground power supply to feed into the ETSA network.
It will also help – but not end – power failures.
ElectraNet says about 200MW of power is needed in the city in peak times and with 5 per cent annual growth, the new line, which carries about 700MW, would more than support expected load growth.
"This is a $250 million project – it is a big project – it has a big impact in terms of the economic viability of the SA economy and its infrastructure which will create jobs, so it's all good news," Mr Rice said.
"It will reduce the probability of power failures, but it won't prevent them."
In its 2007 submission to the Australian Energy Regulator, ElectraNet said 35 per cent of its infrastructure was between 40 and 60 years old, making it one of the oldest networks in Australia.
As part of the $1 billion spending over five years, ElectraNet is also building new power substations in Mt Barker, Port Augusta, the Mid North and Templars to support the Barossa region.
Business SA chief executive officer Peter Vaughan said the investment represented a huge boost for SA when combined with the Federal Government's investment in infrastructure spending. "The net effect will be we'll probably get more capital investment in SA in the space of five years than we had in the last 100," he said.
Acting Energy Minister Jay Weatherill said the expansion of the transmission network would "help ensure that future CBD demand growth can be met reliably while also providing support for demand growth in the western and southern suburbs".
"This expansion is an indication of South Australia's strong economic growth and increased business activity," he said.