Two drone operators in Cupertino, California stalk Apple’s ‘spaceship’ campus every month and they happened to catch some progress surrounding the secret Apple headquarters.

Mathew Roberts, a documentary filmmaker, takes people on tours surrounding Apple’s campus and they happened to come across the solar panels that are being installed in the building. The solar panels are going to be one of the key sources of energy for Apple and according to him around 40% of installation is complete.  75 percent of the renewable energy will come from solar power which means almost every roof on that building will be covered with solar panels. 

According to Roberts, construction on the new Apple HQ is on its way to being completed. This spaceship shaped building was Steve Job’s last gift to Apple and he made sure it embodied Apple’s culture of openness and collaboration.  Apple employees are expected to move into the mega-office by early next year. 

Watch the following drone videos to get a better idea of how cool it actually looks: