en.Wedoany.com Reported - SA Power Networks has commissioned a second dedicated substation for South Australia's $15.4 billion Torrens to Darlington project, which will power tunnel boring machines. The newly operational Richmond East substation provides 22,000 volts of dedicated power to the boring machines constructing the 2.2-kilometer northbound twin tunnels between Mile End and Thebarton.
The substation's power capacity is equivalent to the electricity consumption of approximately 5,000 households and is specifically designed for tunnel construction. Upon project completion, the infrastructure will be repurposed to power tunnel ventilation and lighting systems. The facility includes two transformers and two control rooms, ensuring power redundancy and continuous electricity supply during construction and future road tunnel operations.
SA Power Networks stated that the project was completed ahead of schedule, within budget, and with no safety incidents. Over 100 employees were involved in the project, including designers, engineers, civil contractors, technicians, and electricians, with training opportunities provided for apprentices.
The Torrens to Darlington project represents the final 10.5-kilometer section of Adelaide's North-South Corridor, forming a continuous 78-kilometer freeway connecting Gawler and Old Noarlunga. SA Power Networks Chief Operating Officer Mark Vincent said the company played a key role in providing power infrastructure for the project: "The Richmond East substation is an example of the collaborative relationship between SA Power Networks and the Department for Infrastructure and Transport. Early engagement in planning helped deliver the substation within a tight timeframe." He noted that delivering two substations within a compressed timeframe was significant, as the company typically builds one every three years. "We are proud of the team's excellent work, which has enabled South Australia's largest road infrastructure project to move into its next critical phase." The Richmond East facility is SA Power Networks' second major substation for the project, following the Tonsley East substation commissioned in January 2024, which will power the tunnel boring machines constructing the 4.4-kilometer southbound twin tunnels.
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