Australian data center developer NextDC has raised another AU$500 million (US$347 million) in senior debt facilities, building on AU$1.8 billion (US$1.25bn) of commitments announced in May.The upsize brings the total of the new senior debt facilities to AU$2.3bn (US$1.6bn). Upon financial close of these facilities, NextDC’s total available senior debt facilities will increase from AU$6.4bn (US$4.4bn) to AU$8.7bn (US$6bn).A senior debt facility, typically secured by collateral, is a business loan or line of credit that has repayment priority over other debts if the borrower defaults or declares bankruptcy.Proceeds from the new facilities will support NextDC’s capex in relation to recent customer wins, ongoing data center developments, and general corporate purposes, following the record increase in contracted utilization that the company announced in April.According to NextDC, contracted utilization rose by 250MW to 667MW, growing by 60 percent in the three months between 31 December, 2025 and 31 March, 2026.In response to this, NextDC said it was seeking to raise approximately AU$1.5bn ($1bn) in capital by way of new fully paid ordinary shares in NextDC.The company said the upsize reflects “continued strong support” from a broad syndicate of domestic and international banks.The new facilities are expected to close in mid-July.NextDC has 20 data centers in operation or development across Australia. It also has sites in planning or under evaluation in Japan, Thailand, Malaysia, and Singapore.