Pumped hydro energy storage
Pumped hydro moves water between 2 or more reservoirs to store and generate energy.
As part of our future energy system, pumped hydro is a technology used to store renewable energy made by wind and solar farms. It operates in a similar way to a rechargeable battery. Stored energy can be released to our electricity grid when needed.
How pumped hydro works
A power station houses turbines that are linked to 2 or more reservoirs at different heights.
When electricity demand is high, water is released from the upper reservoir and the force of the falling water spins the turbines. When the turbines spin, electricity is generated and fed into the grid.
Water that passes through the turbines is kept in the lower reservoir until it can be pumped back. When there is excess electricity supply in the grid, the turbines use this excess energy to pump water from the lower reservoir back to the upper reservoir.
This process is usually repeated every 24 hours to help maintain the security and reliability of the electricity grid.
Why pumped hydro is so important
Queensland needs large-scale energy storage to make sure there is always a supply of electricity. When the sun isn’t shining and the wind isn’t blowing, or when there is high electricity demand, pumped hydro is switched on to provide the needed power. The energy storage provided by pumped hydro is an important part of our future energy system.
Planned pumped hydro projects
There are 2 long duration pumped hydro projects planned for Queensland:
The Borumba Dam Pumped Hydro Project will be the first long duration pumped hydro to be built in Queensland. We are also assessing the Pioneer-Burdekin project’s feasibility for pumped hydro development through detailed analytical studies.
Together, these projects have the potential to store up to 7 gigawatts (GW) of electricity. This is enough energy to power the whole of Queensland for a day before needing to be recharged. These projects will create local jobs and support the transformation of our energy system.
In September 2022, the Queensland Government established Queensland Hydro to design, deliver, operate and maintain the long duration pumped hydro energy storage assets that will be the cornerstone for Queensland’s energy transformation.
Pumped hydro’s efficiency
Pumped hydro has been used to create and store energy around the world for generations. It is used for 97% of energy storage worldwide because it is flexible and low-cost to operate. Pumped hydro schemes are considered a very efficient way to generate and store energy.
Lifespan of a pumped hydro facility
The major assets in a pumped hydro facility have a lifespan of more than 50 years. Our long duration pumped hydro facilities will be carefully maintained to ensure they remain safe and effective over the long-term.
Engagement
We are committed to genuine engagement with the community and key stakeholders. Every potential pumped hydro site has unique characteristics, and the community can provide valuable insights to give us a detailed understanding of the project area.
We will work with Aboriginal and Torres Strait Islander peoples, residents, environmental and business stakeholders, and the broader community, throughout the pumped hydro investigation process to consider input and feedback.
More information
- Learn about other renewable energy technologies that make up Queensland’s SuperGrid.
- Visit Queensland Hydro
- Read the Hydro Studies Summary report (PDF, 3561.68 KB)
- Review the Hydro Studies Summary fact sheet (PDF, 643.68 KB)
- Read about pumped hydro in our energy system (PDF, 2702.62 KB).
For enquiries about pumped hydro in Queensland, contact Queensland Hydro on 1800 875 099.
For enquiries about the Queensland Hydro Study Summary report, email pumpedhydro@epw.qld.gov.au.
- Last updated:
- 5 September 2024