His good deed came to light after Jenniffer Gonzalez, Puerto Rico's representative in Washington, thanked him on Twitter.
The Miami-born star - real name Armando Perez - told the New York Daily News he was "just doing [his] part."
"Thank God we're blessed to help," he was quoted as saying.
Much of the US island territory has lost its power after being ravaged by Hurricanes Irma and Maria.
Almost half of its 3.5 million residents are without clean drinking water, while hospitals are running short of the diesel needed to power their life support systems.
