❓ WA Parliament QoN regarding the deployment and costs of Stand-Alone Power Systems (SPS) in Western Australia. The answer provides some data on deployment numbers and total costs, but withholds detailed cost breakdowns due to commercial confidentiality.
AnsweredQoN 500Legislative Assembly
QuestionView source ↗
I refer to the deployment and costs associated with Stand-Alone Power Systems (SPS) in Western Australia, and I ask: (a) how many SPS are currently operational in Western Australia; (b) what is the total cost to date of all SPS deployments in Western Australia; (c) what is the average cost per SPS installed; (d) please provide a detailed cost breakdown for a typical SPS installation including: (i) solar PV system; (ii) battery storage; (iii) backup generator; (iv) installation and commission; (v) ongoing maintenance; and (vi) project maintenance and administration costs; (e) how many SPS have been installed under each rollout stage or funding round since the program's inception; and (f) what is the next planned total number of SPS to be installed across the state over the next 10 years?
AnswerView source ↗
Answered
14 October 2025
Responded by
Minister for Energy and Decarbonisation
Response time
8 days
(a) 434 as at 30 September 2025.
(b) $190 million as at the end of the 2024-25 financial year. This includes costs for the deployment of further units.
(c) - (d)
Western Power and Horizon Power are unable to provide these figures as they are commercial in confidence.
(e)
For Western Power, SPS units installed to 30 September 2025 under each round is as follows:
Round
Volume
Round 1
52
Round 2
91
Round 3
135
Round 4
12
Other
51
For Horizon Power, SPS units installed to 30 September 2025 under each round is as follows:
Round
Volume
Round 1
7
Round 2
17
Round 3
46
Round 4
14
Other
11
(f) Western Power and Horizon Power are on track to deliver 1000 SPS units by December 2030.
(b) $190 million as at the end of the 2024-25 financial year. This includes costs for the deployment of further units.
(c) - (d)
Western Power and Horizon Power are unable to provide these figures as they are commercial in confidence.
(e)
For Western Power, SPS units installed to 30 September 2025 under each round is as follows:
Round
Volume
Round 1
52
Round 2
91
Round 3
135
Round 4
12
Other
51
For Horizon Power, SPS units installed to 30 September 2025 under each round is as follows:
Round
Volume
Round 1
7
Round 2
17
Round 3
46
Round 4
14
Other
11
(f) Western Power and Horizon Power are on track to deliver 1000 SPS units by December 2030.
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