Australian data center firm NextDC has broken ground on its latest facility in Sydney.

Construction firm Multiplex this week announced construction has officially started on NextDC’s S4 facility.

Located in Horsley Park, the data center will offer 350MW of IT capacity across 124,000 sqm (1.33 million sq ft). The company acquired the site in July 2021.

NextDC operates or is developing 20 data centers across Australia, including in Sydney, Melbourne, Brisbane, Perth, Port Hedland, Canberra, Adelaide, the Sunshine Coast, and Darwin.

The company has six data centers in Sydney in operation or development, totaling just under 500MW and 178,500 sqm (1.9 million sq ft). As well as S3 and S6 in Artarmon, NextDC operates three data centers (S1, S2, and S5) in Macquarie Park, and S7 in Eastern Creek.

Beyond Australia, NextDC currently has sites in planning or under evaluation in Tokyo, Japan; Bangkok, Thailand; Johor and Kuala Lumpur, Malaysia; and Singapore.

Sydney is Australia's largest data center hub. Other operators present in the New South Wales city include Digital Realty, Equinix, Stack, Macquarie Data Centres, Keppel, AirTrunk, CDC, Goodman, EdgeConneX, NTT, Amazon, Microsoft, DCI, and others.