New threats to power stability could cost Australians thousands in lost revenue, security breaches and data loss

Australia is bracing for one of its most unpredictable summers yet as power instability meets a rising threat: cyber blackouts. Data from insights agency Gartner shows unplanned power outages can cost businesses up to $5,600 per minute, while digital attacks targeting the grid could further amplify the risks. Experts warn that without preparation, Australian businesses and homeowners could face severe financial losses, corrupted data and compromised security

What is a cyber blackout?

Unlike traditional outages caused by weather or ageing infrastructure, cyber blackouts occur when malicious attacks disrupt power systems, exploiting weaknesses in increasingly digitised energy networks. The result? Prolonged blackouts that can cripple homes, businesses or entire regions. Australia’s ageing grid, already severely under pressure, creates an open door for such threats.

“Cyber blackouts are no longer a remote possibility – they’re a growing global reality and Australia’s energy infrastructure is far from immune,” says Terrence Daniel, General Manager at PSS Distributors, a leader in battery-backup solutions. “For businesses and homeowners, the consequences can be devastating: lost revenue, data corruption and even physical security breaches as CCTV cameras and smart locks fail.

“The Australian Energy Market Operator (AEMO) has flagged major risks this summer, citing record heatwaves, surging demand and ageing coal-fired plants struggling to meet capacity. Such vulnerabilities not only increase the risk of blackouts but make grid networks prime targets for cyber attacks,” he says.

5 key steps to minimise your risk:

1. Enhance cybersecurity: Update software, strengthen passwords and secure networks to prevent attacks.
2. Backup data offline: Store critical files on offline or cloud systems to prevent data loss during blackouts.
3. Invest in a backup battery: Businesses can keep critical systems running, from servers to security, while homeowners can protect essentials like food, devices and safety systems.
4. Add surge protection: Power surges during outages can damage systems. Protect equipment with surge protection tools.
5. Create an emergency plan: Businesses need a continuity strategy; homeowners should prepare family emergency plans.