Tesla had previously said, in late September, that it was sending to Puerto Rico hundreds of batteries that can rely on solar panels to store power which provides emergency aid in the wake of Hurricane Maria. Musk is in talks with Ricadro Rossello, the island's governor, about what could be done.
Alphabet will attempt to provide service in Puerto Rico after the FCC approved their experimental license for Project Loon, an initiative that launches giant balloons with network hardware in them to provide internet access to users on the ground.
"More than two weeks after Hurricane Maria struck, millions of Puerto Ricans are still without access to much-needed communications services", FCC chairman Ajit Pai said in a statement.
Eight-three percent of the island's cellular sites remain out of commission, making communication on and off the island hard, according to the agency.
Google's parent firm Alphabet on Friday received a permit from the US Federal Communications Commission to use balloons to provide hurricane-hit Puerto Rico with emergency cell service.
Musk agreed. Hours later, he announced he was delaying the unveiling of Tesla's new semi-truck and diverting resources, in part to "increase battery production for Puerto Rico and other affected areas". But in that case, Google had already partnered with a telecom provider on the ground, which it depended on to beam the signal to the balloons, for disaster relief.
U.S. Defense Secretary Jim Mattis testified in Congress on Tuesday that there are "over 10,000 troops" in Puerto Rico.
After setting up a network on the island of Vieques, off the main island of Puerto Rico, one team watched from a roof as local residents started getting text alerts from family members who had been trying to get in touch.