This September, Puerto Rico suffered an island-wide blackout that left 1.5 million utility customers without power for more than 50 hours and reportedly resulted in multimillion-dollar losses for its already troubled economy.

The blackout in the U.S. territory with a population of about 3.5 million occurred on September 21, when a blaze erupted in a substation at the 900-MW Aguirre power plant (Figure 3) located in the southeastern part of the island. Two transmission lines of 230 kV each also failed, said the Puerto Rico Electric Power Authority (PREPA).

CEO Dante Disparte quoted in Power Magazine article: Puerto Rico Substation Fire Causes Three Night Blackout

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