$200 million in supplies heading to Puerto Rico to fix the power grid

The restoration of power has been hampered by lack of materials to repair Puerto Rico's grid.

San Juan, Puerto Rico (CNN)More than $200 million dollars' worth of materials are expected to arrive in Puerto Rico this month to help the U.S. Army Corps of Engineers hit its 95% power restoration goal at the end of the month.

More than 7,000 poles and nearly 400 miles of conductor wire are slated to arrive in the next two weeks, said Col. Jason Kirk, commander of the Corps' district that includes the island.
The additional supplies, according to Kirk, are part of the reason he believes the people of Puerto Rico can count on 90 to 95% power restoration by March 31.
    A donated solar lamp in a driveway illuminates storm debris still waiting to be collected last December.
    Contractors restoring power in Puerto Rico under the USACE are expected to leave the island by mid-April, according to the Corps' current plan as obtained by CNN.
    According to Puerto Rico's power authority, on average 87% of the island has power. But Kirk admits that number falls to about 50% in the interior part of the island, and 150,000 US citizens on the island still don't have power.
    "We know that there are a couple of regions that will take into April, potentially May," Kirk told CNN.
    USACE is downsizing, as the Puerto Rico Electric Power Authority is increasing its workforce across the island. The Army Corps of Engineers projects its contractors will have completed work by April 7.
    Task Force Power Restoration Commander, Col Jason Kirk (right), and Puerto Rico Governor Ricardo Rosselló on Wednesday.
    Puerto Rico Governor Ricardo Rosselló has repeatedly expressed frustration at the slow pace of recovery and help. He has questioned the USACE's response on the island compared to other states dealing with disasters. At a press conference Wednesday, he claimed people on the US territory are being treated like second class citizens, saying, "I don't see the urgency."
    Getting the work done has also become a frustration for mayors on the island like Jorge Gonzalez Otero of Jayuya, in the interior part of the island.
    He tells people in his municipality, "Prepare yourselves. We're in it for the long haul."
    Only 45% of Jayuya, according to the mayor's office, has power. Hurricane Maria wiped out the power grid when it hit Puerto Rico on September 20 last year. And even where the electricity has been restored, like in the capital San Juan, mass outages are still happening.
    USACE admits materials have been a challenge in restoration efforts.
    Puerto Rico Electric and Power Authority workers guide an utility pole raised with a crane to repair a downed power transmission line in Ponce, last November.
    "The initial assessment told us that we would need about 60,000 power poles and over 3 million individual items to work the repair of 30,000 miles of