A video shot by a YouTube user using a drone shows portions of Tesla Motors Inc.’s $5 billion battery plant going up outside Reno, Nev.

The user, QLC Tech Videos, said the video was recorded when no workers were present and from more than a mile away to “ensure safety.”

A DJI Phantom 3 drone was used, and the drone “was in constant visual contact as well as maintaining an altitude of not more than 400 feet above ground level,” QLC Tech Videos said.