After breaking ground two years ago, Amazon’s $1.5 billion air cargo hub in Northern Kentucky is now open for business. The Amazon Air Hub, which is located at the Cincinnati/Northern Kentucky International Airport, is a key cog for connecting a network of more than 40 Amazon Air sites as Amazon (Nasdaq: AMZ) looks to speed up its deliveries.

“Last week, our team officially began operations at the site and welcomed the first of over 2,000 dedicated Amazonians who will bring this $1.5 billion investment in the Northern Kentucky region to life,” according to a blog by Sarah Rhoads, Vice President of Amazon Global Air. “As operations started, we celebrated the arrival of the first of many of our Amazon branded aircraft onto our brand-new ramp. By the end of the year, this facility, which spans over 600 acres, will operate a dozen flights per day and process millions of packages every week.”

The hub is comprised of an 800,000-square-foot sortation building that’s located on a 600-acre campus. The campus includes seven buildings, a multistory vehicle parking structure and a new ramp for aircraft parking. By the end of the year the facility will enable a dozen flights per day while processing millions of packages every week.

On the technology front, the hub features mobile drive units that move packages across the floor, ergonomic workstations that support a comfortable work environment for employees, and Amazon’s Robin robotic arms that inject packages onto robotic drives.

“We also designed this facility from the ground up with sustainability in mind, with a solar rooftop panel installation scheduled to take place over the next year,” Rhoads said. “This will be the only installation of its type in our network that will feed all power generated directly into the electrical grid of the local community.”