The fire broke out in a transformer at the Monacillos substation of LUMA, the company announced. Puerto Rican police, fire and emergency medical personnel were at the scene and there were no reports of injuries.
Calling it an explosion, Governor Pedro Pierluisi said both state and federal law enforcement were investigating the cause.
“All the government̵
“The priority must be to restore the electrical service as soon as possible and our people can rest assured that we are making sure that this is the case. At the same time, once we have the results of the investigations into the cause of this incident, which is responsible for him, he will have to meet the people of Puerto Rico, “he said.
“The FBI is assessing the situation in terms of the huge eclipse,” FBI public relations officer Limari Cruz-Rubio told CNN on Thursday night, but declined to comment further.
Website affected by the cyberattack earlier in the day
LUMA Energy said it was the victim of an earlier distributed denial-of-service attack in which a site was intentionally affected by huge amounts of web traffic in an attempt to beat it.
“The DDoS attack was identified and sent 2 million visits per second,” a statement from LUMA Energy said. “As a result, many customers may have had difficulty accessing information related to their accounts.”
There was no immediate indication of any connection between the website attack and the substation explosion.
“The attack has been reported to the relevant authorities and LUMA is awaiting the results of an ongoing investigation,” the press release said.
LUMA is a joint venture between Quanta Services and Canadian energy company ATCO, which was selected by the Puerto Rican government to take over the grid from its previous public grid, PREPA. LUMA has been in charge of the electricity network since June 1.
CNN’s Christina Carega contributed to this report.