Bali Hit by Sudden Blackout, Entire Island Plunged into Darkness
On May 2, 2025, at 4 PM, a sudden power outage in Bali left almost the entire island without electricity. This massive blackout significantly impacted local livelihoods, transportation, and the tourism industry. PT PLN (Indonesia’s State Electricity Company) quickly initiated repair efforts and continued to update the power supply status.
Power Company Responds: Submarine Cable Failure is the Main Cause
According to Gregorius Adi Trianto, Vice President of Corporate Communications at PLN, the outage occurred around 4 PM local time due to a failure in the submarine cable between Java and Bali, causing all connected power generators to Bali to cease operations.
As of 10 PM that day, approximately 80% of the areas were still without power.
In the southern areas of Jimbaran and Uluwatu, not only was there no electricity, but even the internet was down～～
Where Does Bali’s Electricity Come From?
Bali’s own power generation capacity is limited, with most electricity coming from Java Island via a high-voltage direct current (HVDC) submarine cable. This critical cable serves as a vital lifeline for the island’s stable power supply, and any technical failure can lead to large-scale blackouts like the current incident.
Additionally, while Bali has several small-scale oil and gas power stations locally, they are only suitable for emergency use or as backups and cannot meet the island’s full energy demands.
Restoration Efforts Continue, Full Power Restoration Will Take Time
PT PLN stated that hundreds of technicians with equipment have been dispatched to affected areas to carry out phased repairs and load management. Their goal is to stabilize the system as quickly as possible and prevent similar incidents from recurring.
Officials emphasized that full power restoration will take time and urged the public to be patient and conserve electricity.
Looking Ahead: Bali’s Power System Needs Diversification
This blackout highlights the risks of Bali’s reliance on a single power source. In the future, the Indonesian government and PLN should consider the following strategies to enhance energy resilience:
- Invest in renewable energy: Diversify energy sources such as solar, wind, and geothermal.
- Strengthen local power generation: Increase microgrids and distributed energy systems.
- Submarine cable redundancy: Improve backup and maintenance mechanisms for main cables.
FAQ Section
1. Why did Bali experience this major power outage?
The main cause was a malfunction in the submarine cable connecting Java and Bali, which prevented the power generators from functioning.
2. Where does Bali get most of its electricity from?
Most of Bali’s electricity comes from Java, transmitted via submarine cables.
3. Does Bali have its own power plants?
Yes, but they are relatively small and primarily serve as backup, unable to supply the entire island for extended periods.
4. How can similar situations be avoided in the future?
It requires diversifying power sources, enhancing local power generation facilities, and improving the backup design and emergency response capabilities of the power grid.
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