Loy Yang Power Station

From Engineering Heritage Australia


The Loy Yang complex consists of two separate Power Stations, Loy Yang A and Loy Yang B, constructed in stages. It was originally planned that the Loy Yang would consist of eight generating units of 500 megawatts each. The privatisation process with SECV assets resulted in only six generating units being completed, four in Loy Yang A and two in Loy Yang B.

Since original commissioning, all units have been upgraded from their original 500 MW nameplate capacity. At Loy Yang A three units have a generating capacity of 560 MW and the other, 530 MW. At Loy Yang B, each unit has a capacity of 525 MW.

Over 7 years, up until 2014, the control systems for all 4 units at Loy Yang A have been converted from analogue systems to digital systems, offering increased reliability and greater flexibility.

The Loy Yang open cut brown coal mine is owned and operated by AGL. The mine has reserves totalling 168 billion tonnes and mines, on average, around 30 million tonnes each year. The overburden covering the coal seam is between five and 24 metres thick with the coal seam thickness averaging around 180 metres. The brown coal deposit, estimated to be about 15 to 30 million years old, has a low sulphur trace element count and a low ash content of only about two percent.

Loy Yang Power Station Complex
Turbo-alternator in Loy Yang A Power Station
Control Panels Loy Yang A Power Station
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Engineering Heritage Recognition Program

Marker Type Engineering Heritage Marker (EHM)
Award Date October 2018
Heritage Significance The Loy Yang Power Station complex is of:
  • local significance as it forms a part of the power generation industry, which has historically been the largest employer in the Latrobe Valley since the 1920s;
  • state significance as it provides approximately 50% of the state’s electric energy requirements; and
  • national significance as it is the largest power station complex in Australia and one of very few using brown coal as its fuel.
Nomination Document Available here.
Ceremony Booklet
Ceremony Report
Not Available.
Plaque/Interpretation Panel Not Installed.
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