Twin Hills Engineering and Drilling and Water2Wire – a joint venture partnership between international engineering heavyweight GHD, London-headquartered civil engineers Mott MacDonald and Canadian engineering and design firm Stantec – have been awarded the first contracts for the Queensland state government’s AUD 12 billion ($8.06 billion) Pioneer-Burdekin pumped hydro energy storage (PHES) project.
The project is being touted as possibly the largest PHES project in the world. Proposed to be delivered in two stages by 2035, when complete the project is expected to provide 5 GW of generation capacity for 24 hours – equivalent to about half of the Australian state’s peak usage.
Queensland Energy Minister Mick de Brenni said the project, forecast to unlock high-quality wind and solar generation sources in the nearby Central and Northern Queensland Renewable Energy Zones, will provide the long-term storage and reliability needed to power Queensland’s clean energy future.
“The project is the cornerstone of the Queensland Energy and Jobs Plan,” he said. “This mega pumped hydro project will act like a giant battery, and when connected to our Queensland SuperGrid, will underpin the reliability of our publicly owned grid by storing the energy generated by our renewable energy zones.”
With initial studies indicating there is the potential for stage one of the project to be completed by 2032, Twin Hills Engineering and Drilling has this week been awarded the geotechnical contract, which will form a key part of the exploratory stage for the project.
The six-month shallow drilling program will be used to inform project design, a fundamental part of the project’s Detailed Analytical Report. The report is due to be presented to the Queensland government in 2024.
The awarding of the geotechnical contract comes after the Water2Wire joint venture partnership was appointed to deliver the front-end engineering and design (FEED) for the Pioneer-Burdekin project.
Queensland Hydro, the new publicly owned entity established to oversee the delivery of the state government’s planned pumped hydro projects, said the Water2Wire joint venture will bring significant engineering, hydropower expertise and capability to determine the technical specifications, schedule and cost parameters for the project.
The Water2Wire team has delivered FEED design multiple projects including for Queensland Hydro’s proposed 2 GW Borumba pumped hydro project, Genex’s 250 MW Kidston PHES in north Queensland, the 15 GW Lake Onslow PHES in New Zealand, and the 3 GW Bath County PHES in the United Kingdom.
Queensland Hydro Chief Executive Officer Kieran Cusack said the appointments were an asset to the project.
“Both Twin Hills and Water2Wire had outstanding tender responses that showcased both their impressive capability and strong local links,” he said. “With Water2Wire’s recent work on high-profile projects like Borumba and Kidston and their collective expertise in delivering pumped hydro projects around the world they will be a great asset to this project. We’re also delighted to be working with a local family business employing local workers.”
It is anticipate the project will support more than 3,000 jobs during construction and de Brenni said it will also offer “hundreds of supply chain opportunities. It’s regions like Mackay that are at the centre of this Queensland’s renewable energy transformation – which will unleash new industrial jobs in hydrogen, renewables, manufacturing, and critical minerals.”
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