In 2012 the ERA received a new facilities investment test application from Western Power to determine if the forecast new facilities investment of $27.21 million proposed by Western Power, to construct a new 132-66/11 kV Medical Centre zone substation at the Queen Elizabeth II (QEII) Medical Centre in Nedlands, meets the new facilities investment test.
In 2013 the ERA pre-approved investment of $24.43 million for Western Power to construct a new 132-66/11 kV Medical Centre zone substation.