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Hawaii Electric Light reports that about 21,000 customers in various areas of the island experienced a brief power interruption this afternoon because of a sudden loss of generation when a combustion turbine unit at its Keahole Power Plant tripped offline.
Protective devices automatically disconnected some customers temporarily to stabilize the grid. Those affected experienced a temporary power interruption lasting about 10 minutes while backup generators were started.
The unit has since been returned to service. Customers who remain without service may call 969-6666. Hawaii Electric Light also posts outage information on its Twitter account @HIElectricLight with the hashtag #BigIslandOutage.