Chile's Huatacondo plant stays offline after cyberattack

Huatacondo’s 103 MW solar plant and its 98 MW/312 MWh battery system remained disconnected and at 0% availability through October 28, 62 days after the August 27 incident, according to EnergySage Chile. The National Electric Coordinator’s daily report still kept both assets offline and continued to cite a cyberattack on the Huatacondo facilities as the cause.

What did the National Electric Coordinator record?

The National Electric Coordinator’s daily log kept the Huatacondo plant and its battery system disconnected, with 0% availability, and continued to attribute the outage to the cyberattack. That operating status indicates that, at least through October 28, there had been no return to service for the solar and storage complex.

The agency’s reference matters because this was not a brief interruption or an immediate recovery. Specialized coverage cited by Energy Storage News reported on October 27 that the system was still offline, with the same cause listed in the daily report. One day later, EnergySage Chile was still seeing the same status for the plant and its BESS.

How broad was the outage?

The outage affected both the solar plant and the battery system, which were logged at 0% availability for more than two months. EnergySage Chile said the site includes a 103 MW plant and a 98 MW/312 MWh storage system, with no return to service as of October 28.

The timeline was also defined by the incident date, August 27. Since then, the extended offline status has turned the case into an OT resilience and operational continuity issue for Chile’s power system, beyond the initial event reported as a cyberattack.

What is known and what remains unconfirmed?

Independent coverage warned that it had not yet been established whether the disconnections at Huatacondo, Santa Rita, Olivos and Espinos were connected, nor what the origin of the attack was or which systems were compromised. That observation, attributed by PV Solar Fast, leaves the technical scope of the incident open.

For now, the confirmed fact is Huatacondo’s ongoing unavailability and its BESS, along with the event’s attribution to a cyberattack in the National Electric Coordinator’s records. The rest, including any link between the disconnections, remained unconfirmed in the cited coverage.