Delays securing electricity at NEXTDC’s Melbourne facility have cut its earnings outlook, highlighting the grid constraints threatening to slow Australia’s AI infrastructure surge.
Australia’s AI data centre boom is running into a problem that no software update can solve: power. The latest warning came from NEXTDC, whose shares slumped after delays in upgrading electricity at its Melbourne M3 facility forced the company to cut its earnings outlook. Reuters reported that the issue has pushed back a substantial volume of contracted customer revenue, underlining how quickly a shortage of grid capacity can turn into a financial problem for operators.
The market reaction has been severe, but the broader message is more nuanced. MoneyMag noted that Firmus has shelved its planned initial public offering, while South Korean operator Elice fell sharply on debut before recovering some of the losses. Taken together, the moves suggest investors are growing more cautious about the pace and cost of building AI infrastructure, particularly when the availability of electricity and network connections remains uncertain.
That caution is understandable. According to industry reporting, NEXTDC’s delay stems from power upgrade setbacks at Melbourne, with community opposition and local council consent also affecting the timetable. The company’s revised outlook reflects not only postponed demand, but also the risk that promised revenue may arrive later than expected. In that sense, the challenge is less about whether clients want capacity and more about whether operators can physically deliver it on schedule.
The scale of the opportunity still looks large. Australian research cited by MoneyMag suggests data-centre electricity consumption could almost triple from 5.2 terawatt-hours in FY26 to 15.8 terawatt-hours by FY30. The International Energy Agency has separately said global data-centre power use could nearly double by 2030, to 950 terawatt-hours from 485 terawatt-hours in 2025. Those forecasts do not remove execution risk, but they do help explain why investors are reluctant to dismiss the sector outright on the basis of a single bottleneck.
History offers a useful comparison. Australia has seen this pattern before, notably during the resources boom, when demand for exports remained strong even as infrastructure struggled to keep up. Ships once waited offshore because ports could not move goods fast enough; today, data-centre operators are waiting on grid capacity. The key question for investors is whether customer commitments remain intact while the power catches up. If they do, the boom may be delayed rather than broken. If they do not, the problem is more serious than a temporary outage in supply.
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