As part of our commitment to renewable energy initiatives, Melbourne Water constructed five new mini hydro-electricity plants during the 2016/17 financial year.

What happened and when

Five new mini hydro-electricity plants were constructed at our existing reservoirs in:

  • Wantirna
  • Boronia
  • Dandenong
  • Mount Waverley
  • Cardinia Creek

They were all operational by 30 June 2017.

The five new plants are in addition to the nine mini hydro-electricity plants already in opeartion in Melbourne Water's supply network. The plants generate energy from moving water and feed it back into the electricity grid. 

Each mini hydro-electricity plant was constructed in three stages.

  1. The power generating component was constructed off-site, within a transportable building
  2. A purpose-built concrete base and pipeline connections to the existing water supply pipes was constructed at each reservoir site
  3. The transportable building was taken to site, placed on the concrete base and connected to the existing water and power supply infrastructure

Then, each new mini hydro-electricity plant was tested and commissioned.

Why this project was important

Mini hydro-electricity plants are an important component of Melbourne Water’s renewable energy program.

Now that all five of our new mini hydros are operating, in addition to our existing 14 plants, Melbourne Water will generate is generating more than 69,500 megawatt hours of power per year via hydroelectric generation or enough power for more than 14,100 homes. We will be preventing over 75,800 tonnes of carbon dioxide emissions, equivalent to taking more than 29,200 cars off the road.

Melbourne Water is now investigating the construction of a further 11 mini hydro-electricity plants.


Last updated:
14 February 2018