New York (CNN Business) Ahead of today's visit from President Trump, Apple announced it has begun construction on its new $1 billion campus in Austin, Texas.

The 133-acre campus, which is expected to open in 2022, will initially house 5,000 employees, with the capacity to grow to 15,000. It will run on 100% renewable energy, including from solar power generated on site, according to the company. The project was first announced last December and is expected to make Apple the largest private employer in the city.

"With the construction of our new campus in Austin now underway, Apple is deepening our close bond with the city and the talented and diverse workforce that calls it home," the company's CEO Tim Cook said in a statement.

A rendering of the upcoming 133-acre Apple campus in Austin, Texas.

The company is no stranger to pricey campuses. Its spaceship-shaped Cupertino, California headquarters, which was unveiled in 2017 after five years of construction, reportedly cost nearly $5 billion to build.

Apple AAPL also announced it's gearing up to ship its new Mac Pro to customers starting in December from its manufacturing facility in Austin. The company said in September that it would keep production of the computer in Austin after receiving a federal tariff exclusion for several key parts of the device.

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