SA Power Networks to Spend $10 Million on Regional Power Reliability
Quick Look
- SA Power Networks will invest up to $10 million to replace 10,000 insulators and install 15 automation switches across regional South Australia to combat pollution-related power outages.
- Works begin in July, aiming for completion before summer.
AI-generated summary
Why It Matters
Pollution from dust, salt, and other contaminants settling on insulators, exacerbated by dry conditions and light moisture, has caused flashover events leading to power outages in regional South Australia since late 2024. These events have worsened over the past summer and can cause insulator deterioration.
SA Power Networks will spend about $10 million to improve network reliability in regional areas and combat insular pollution.
About 10,000 insulators will be replaced over 33 powerlines and 15 high-voltage automation switches will be installed.
What's next?
Works will begin in July, with SA Power Networks aiming to complete a majority of the work before this summer.
SA Power Networks will spend up to $10 million to address insulator pollution following repeated power outages across regional South Australia.
According to the authority, pollution issues emerged as a reliability challenge in late 2024, before worsening last summer.
Cecilia Schutz from SA Power Networks said it was the department's highest priority project.
More than 25,000 hours of work will need to be completed by the roughly 50 workers rotating on and off over the next six months.
"This represents one of our biggest workforce mobilisations ever," she said.
Prolonged dry conditions allow dust, salt and other contaminants to settle on insulators.
When combined with light moisture, a flashover event can occur and create a power outage.
These repeated events can cause the insulators to deteriorate, compounding the problem.
Works will begin in July and will see 10,000 insulators replaced across 33 powerlines.
As part of the works, 15 high-voltage automation switches will also be installed.
It means during outages, SA Power Networks will be able to isolate the outage to a "more specific area" during restoration works.
Ms Schutz said the authority was focused on completing a significant portion of the works before summer and the climatic conditions that exacerbated the pollution issues over the past two summers.
"We're going to be replacing around sort of 7,500 insulators with a silicon insulator," she said.
"In really high-risk coastal areas, we're going to be replacing them with a much higher … more robust porcelain insulator."
The majority of the works will centre around the Yorke Peninsula with other replacements occurring on Eyre Peninsula and on the Limestone Coast.
Open Questions
- What is the specific timeline for the completion of the majority of the work before summer?
- What is the exact cost breakdown for insulator replacement versus switch installation?
- What are the long-term maintenance plans for the new insulators and switches?
- What is the expected lifespan of the new silicon and porcelain insulators?