Sabey Data Centers has broken ground on a third building at its Ashburn, Virginia, campus.

Construction has started on Building A, the third and final data center at the campus, which will deliver an initial 18MW of IT capacity, with the potential to grow to 54MW in the future.

The data center is expected to be in service by 2026.

"Starting construction on Building A marks a significant milestone for Sabey Data Centers as we continue to expand our presence in Northern Virginia," said Tim Mirick, president of Sabey Data Centers. "This development will create significant additional capacity and room for our customers to efficiently and sustainably scale. "

The new data center will feature a range of cooling set-ups, catering for air-cooled, liquid-cooled, and hybrid environments, and accommodate densities of up to 100kW per rack.

Sabey's Ashburn campus spans 38 acres and, upon full build-out, will offer a total campus capacity of 85 MW. Located in Loudoun County, at the heart of Northern Virginia, the world's busiest data center market, the first data center at the site came online in 2017, and it has been growing ever since. The current buildings average an annualized Power Usage Effectiveness (PUE) of 1.35, the company said.

A joint venture between Sabey Corporation and National Real Estate Advisors, Sabey Data Centers operates more than 4 million sq ft of data centers across the US, with six data center sites across the US in Quincy, Seattle, and East Wenatchee, Washington; New York City; Austin, Texas; and Ashburn, Virginia.