Genex celebrates milestone at Kidston Pumped Hydro

Aerial photo of Genex's Kidston pumped hydro project site (Genex)
The Kidston Pumped Hydro project site (Image: Genex)

Genex Power is celebrating a significant milestone for the 250MW/2,000MWh Kidston Pumped Storage Hydro Project, with the completion of the main access tunnel for the underground works.

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The main access tunnel serves as the permanent access point to the power station cavern. The completion of the tunnel ensures access for the power station cavern lower bench excavation works and ultimate fit-out activities, which has been established within the timeframe required by the current overall construction program.

Following the water ingress event in September 2022, Genex took the decision to realign the main access tunnel away from the zone of fractured material encountered in the original tunnel heading. While this resulted in an additional length of 436m for the realigned main access tunnel, it reduced the overall risk of the underground works.

Tunnelling works commenced on the realigned access tunnel in December 2022. The completion of the main access tunnel marks a major milestone for the underground works and the overall de-risking of the project, which remains on track for energisation in the second half of 2024.

Genex CEO Craig Francis said said, “The completion of the realigned main access tunnel represents a major milestone for Genex and the Kidston Pumped Storage Hydro Project. We are extremely pleased with the way in which the Genex and EPC contractor teams responded to the water ingress event last year, completing the redesign and recommencing production with minimal delay. This has limited the time and cost impacts of the water ingress event on the overall project.

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“[This] milestone is extremely significant, as it enables Genex and its stakeholders to draw a line under one of the material outstanding risk items for the underground works. Importantly it moves us one step closer toward commencing the power station fit-out works ahead of energisation later in 2024.”

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