Hon Peter Collier asks about the cost and output of Perth and Southern Seawater Desalination Plants. The answer provides cost estimates and explains production is reviewed annually based on dam inflows and demand.

AnsweredQoN 1303Legislative Council
Asked
10 May 2018
Portfolio
Water

QuestionView source ↗

(1) What is the average cost, per kilolitre, for the Perth Seawater Desalination Plant for the following years: (a) 2017-2018; (b) 2018-2019; (c) 2019-2020; and (d) 2020-2021? (2) What is the average cost, per kilolitre, for the Southern Seawater Desalination Plant for the following years: (a) 2017-2018; (b) 2018-2019; (c) 2019-2020; and (d) 2020-2021? (3) What is the forecasted output of the Southern Seawater Desalination Plant for the following years: (a) 2017-2018; (b) 2018-2019; (c) 2019-2020; and (d) 2020-2021?

AnswerView source ↗

Answered
28 June 2018
Responded by
Minister for Regional Development representing the Minister for Water
Response time
9 days
(1)(a)-(d) The operating cost is estimated to be $0.62/kL. The total unit cost, taking into consideration construction costs and conveyance infrastructure, makes the total cost of desalinated water to be approximately $2 - $3/kL.
(2)(a)-(d) The operating cost is estimated to be $1.01/kL The total unit cost, taking into consideration construction costs and conveyance infrastructure, makes the total cost of desalinated water to be approximately $2 - $3/kL.
(3)(a) 103 GL. (b)-(d) Production is reviewed annually based on inflows to dams and expected customer demand.

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