The WA Government has proposed construction of a new desalination plant to be delivered by WA Water Corporation. The desalination plant will be located in Alkimos, north of Perth and adjacent to an existing wastewater treatment plant. The full scope of the project would be delivered in two stages, with only the 50 billion litre stage one currently confirmed.
Included in the scope of Stage One is:
- desalination plant with a 50 million litre annual capacity
- ocean intake pipeline below the seabed
- an ocean discharge pipeline below the seabed to transport brine from the plant
- a 34-kilometre pipeline to transport drinking water to Wanneroo Reservoir
WA Water Corporation is expected to secure a Power Purchase Agreement for up to 400 megawatts of renewable wind energy to power the Alkimos Seatwater Desalination Plant, as well as its existing desalination plant at Kwinana and Binningup.
Key Dates
| Jun 2022 | Project Announcement |
| Dec 2023 | Preferred Bidder Selection |
Funding contributions
| User charges |
Procurement
| Procuring Agency: | WA Water Corporation |
| Successful Tenderer: | Consortium of Acciona Agua Australia Pty Ltd and Jacobs Group Australia Pty Ltd. The companies will form an alliance to be known as the Northern Water Partnership (NWP) |
PROJECT HISTORY
| May 2022 | The 2022-23 WA Budget announced WA Water Corporation would retain its forecast FY2021-22 dividend payment of $1.4 billion in the 2021-22 Budget to instead contribute to funding a new desalination plant. |
| Jun 2022 | The WA Government announced the project and confirmed the new desalination plant would be located in Alkimos, with a proposed scope of 100-billion-litres per year. |
| May 2023 | The WA Government allocated $65 million towards early enabling works in the 2023-24 Budget. |
| Nov 2023 | The project received environmental and planning approvals from the Federal Department of Climate Change, Energy, the Environment and Water, and the WA Environmental Protection Agency. |
| Dec 2023 | The WA Government confirmed $2.8 billion in funding to the project. |
| Dec 2023 | A consortium of ACCIONA Agua and Jacobs was selected as the preferred proponent to design, build and operate the Desalination Plant. Subject to further negotiations, the consortium will form an alliance to be known as the Northern Water Partnership (NWP). |
Estimated Total Cost
(2023)
Sector
Water & Sewerage
Procurement approach
Traditional Procurement |
Location
Western Australia |
Resources
