Major Adelaide CBD expansion underway

ElectraNet, owner and manager of South Australia’s high-voltage (HV) electricity transmission network, is undertaking a major expansion of the electricity supply to the Adelaide CBD.

The Adelaide central reinforcement (ACR) program is the most significant injection of network electricity capacity into the Adelaide CBD since the 1980s and will ensure continued security and reliability of supply and facilitate the long-term growth and development of Adelaide and the South Australian economy.

The program will represent an investment of nearly $200 million and is part of ElectraNet’s $1 billion, five-year expansion plan for South Australia.

This major infrastructure development includes the establishment of a new substation at Keswick terminal, which will be supplied from Torrens Island via a new underground electricity transmission line spanning a route of approximately 18 km.

The substation will convert 275 kV HV power from ElectraNet’s transmission network at Torrens Island via the underground cable into a lower 66 kV voltage. This lower voltage will then be distributed by ETSA Utilities to Adelaide households and businesses.

ElectraNet’s contractors have been working along the route since April 2010, in particular Port Road and Port Road median, using a variety of construction methods to install the underground transmission line.

Construction is expected to be completed in late 2011.