A recentcosting for a 132 kV line from Kempsey to Port Macquarie came in at $28-$48 million range for a 43 km distance.
http://www.nemmco.com.au/transmission_distribution/179-0485.pdf
Big variables are the capacity of the line and commodity costs for aluminium, steel and copper. DC should be substantially cheaper but you would want a very high capacity line. $1m/km sounds closer to the mark for me but interested in any other opinions or if the company has released cost estimates?
power lines, page-7
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