❓ A WA parliamentary question seeks details on initiatives undertaken by METRONET to mitigate cost escalations. The answer provides examples of efficiency improvements, material reuse, and alternative fuel usage.
AnsweredQoN 600Legislative Council
QuestionView source ↗
I refer to the Minister's answer to Estimates pre-hearing questions in relation to METRONET cost escalations in which it was stated "numerous initiatives have been undertaken over the life of the METRONET program to minimise the impact of external factors that have pushed project costs up", and I ask: (a) what initiatives were undertaken, for which projects, to what effect?
AnswerView source ↗
Answered
14 October 2025
Responded by
Parliamentary Secretary to the Minister for Transport
Response time
4 days
(a) METRONET undertook regular constructability, material quantities and schedule reviews
In addition, the METRONET program also undertook a number of innovative initiatives, including:
· using cutting-edge Reptail ballast box spreaders on the Morley-Ellenbrook Line project, improving efficiency and reducing the amount of equipment needed.
· sourcing and reusing on site over 3 million tonnes of spoil on the Yanchep Rail Extension;
· used solar-battery systems at a number of site offices to reduce diesel use; and
· using hydrogen as a diesel alternative on the Byford Rail Extension, which lead to a 19 per cent increase in fuel efficiency.
In addition, the METRONET program also undertook a number of innovative initiatives, including:
· using cutting-edge Reptail ballast box spreaders on the Morley-Ellenbrook Line project, improving efficiency and reducing the amount of equipment needed.
· sourcing and reusing on site over 3 million tonnes of spoil on the Yanchep Rail Extension;
· used solar-battery systems at a number of site offices to reduce diesel use; and
· using hydrogen as a diesel alternative on the Byford Rail Extension, which lead to a 19 per cent increase in fuel efficiency.
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