ABC News December 29, 2017

100 days after Maria, nearly half of Puerto Rico customers still without power

WATCH: Puerto Rico's Maria death toll climbs to 64, as FEMA assistance tops $1 billion

Approximately 55% of the customers who are able to receive electric power have their service restored three months since Hurricane Maria hit the Puerto Rico, authorities announced Friday.

The announcement comes 100 days after Hurricane Maria made landfall on the island as a Category 4 hurricane, plunging the island into complete darkness.

Carlos Giusti/AP
Resident Karina Santiago Gonzalez works on a small power plant in Morovis, Puerto Rico, Dec. 21, 2017.

The figure was released Friday in a statement from Governor Ricardo Rossello and interim director of Puerto Rico Electric Power Authority Justo Gonzalez.

“We understand how difficult it has been for the people of Puerto Rico who have been without power for so long. We are confident that with the arrival of more workers from the United States utility companies, along with an updated restoration plan, we will see progress in reconnecting the energy service to everyone,” Rossello said.

The number people still without power has been a mystery on the island as PREPA has only been reporting the percentage of the electric grid’s power generation. As of today, nearly 70% of the electric grid is operating.

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Cindy Vazquez Cruz, with her daughter Ruby Alamo, sit in the shelter for Hurricane Maria victims where they currently reside, Dec. 25, 2017, in Toa Baja, Puerto Rico.

The U.S. Army Corps of Engineers told ABC News in an statement, “We estimate 100 percent of customers will have power restored by the end of May.”

There are an estimated 3,500 workers trying to restore electricity in Puerto Rico, according to the governor’s office.