SA Power networks has issued a plea for information, following the theft of copper at Swan Reach, as well as 13 other sites across the state.
The organisation is offering a reward of $20,000 for information that leads to the conviction of those responsible.
In total 14 substations have been targeted with an power outage on Tuesday in Swan Reach attributed to a substation break-in.
Under the Electricity Act, thieves face up to two year’s jail or a $10,000 fine for breaking into a substation and interfering with electricity infrastructure.
A Power Networks spokesman Paul Roberts said they are working closely with SAPOL and encourage anyone with information on copper theft to contact CrimeStoppers on 1800 333 000,”