Residents of the APY Lands in the far north of South Australia have experienced several power outages during the latest heatwave stifling the state, where temperatures have topped 40 degrees in many areas.

Federal Opposition spokesperson for Indigenous Australians, Kerrynne Liddle, said the SA and Federal governments needed to explain the cause of the outages and delays restoring power to homes and businesses.

The South Australian senator said she had received several reports of repeated blackouts from locals across several communities in the APY Lands and sought explanation from the state's power supplier, without success.

"The issues I raised last summer appear largely unresolved," Senator Liddle said on Friday.

"I asked why consumers are not being given sufficient notice of supply interruptions, or timely updates when blackouts occur.

"Yet year after year there appears to be little improvement."

Senator Liddle said Indigenous Australians Minister Malarndirri McCarthy must act immediately to lessen the already high risk those living in the APY Lands are facing during current periods of severe heat.

"The Minister should be prioritising these issues ... and support vulnerable people during the summer months," she said, adding not only was support lacking during power outages, but vital information such as outage data too.

"Consumers are entitled to better information, given the impact on families, the financial cost of replacing soiled food and greater vulnerabilities they face with their health," Senator Liddle said.

"Particularly during predictable seasonal pressures that disproportionately affect vulnerable communities."

She said access to reliable energy during was not optional during such heatwaves, some of the most severe on record for South Australia.

"The SA and Federal governments must explain what steps they are taking to improve retailer reporting, and implement more accurate performance monitoring for vulnerable customers," Senator Liddle said.

"I was unable to get any outage data for the heatwave, and it is not publicly available on a website, like is commonplace elsewhere. Why?"

More than 100,000 square kilometres make up the APY Lands, which is run by Native Title body Anangu Pitjantjatjara Yankunytjatjara and faced periods of turbulence in recent times.

A formal period of administration ended in December, with new general manager Trent Wilkinson pledging to "rebuild confidence" in the long-troubled organisation.