NEXTDC Plans to Spend A$5.75 Billion Building the Rooms Where AI Lives

Ask an AI a question and the answer seems to appear from nowhere.

It does not.

Behind every chatbot response, generated video and cloud application is a physical chain of graphics processors, memory, fibre-optic cables, cooling systems, backup generators and high-voltage electricity. The “cloud” is really a collection of extremely sophisticated industrial buildings.

One Australian company is racing to build a remarkable number of them.

NEXTDC, the ASX-listed data-centre operator, says it expects to spend between A$5.25 billion and A$5.75 billion in the 2027 financial year. That would follow A$3.4 billion of capital expenditure in FY2026. The money is intended to turn an enormous backlog of contracted computing capacity into operational facilities across Sydney, Melbourne and other markets. NEXTDC’s FY2026 results announcement

The captivating part of the story is not simply how much NEXTDC plans to spend. It is the gap between what customers have already contracted and what the company has built.

NEXTDC’s contracted capacity versus built capacity

At 30 June 2026, NEXTDC reported:

• 740.1 megawatts of contracted utilisation
• 287.9 megawatts of built capacity
• 175 megawatts of billing utilisation
• A 565.1-megawatt forward order book waiting to convert into revenue

Contracted utilisation increased by 202% in a year. In plain English, customers signed up for more than two and a half times the capacity NEXTDC had physically fitted out at year-end.

That does not mean the company has sold the same room twice. Many large data-centre agreements are signed years before all the halls, electrical equipment and cooling systems are ready. Customers reserve future capacity, then begin paying as agreed stages are delivered and switched on.

NEXTDC says every megawatt in its forward order book is covered by a binding customer commitment. The figure excludes options, reservations, letters of intent and memoranda of understanding. This distinction matters: the order book is stronger evidence than a sales pipeline, but the revenue has not arrived merely because a contract was signed. Construction, grid connections and customer deployment still have to occur. FY2026 results presentation

What does NEXTDC actually sell?

NEXTDC does not make AI chips and it does not train its own ChatGPT competitor.

It supplies the controlled environment in which other organisations place computing equipment. Think of it as a combination of a high-security warehouse, a private power network, a refrigeration plant and a telecommunications exchange.

A serious data centre needs:

• Large, reliable grid connections
• Transformers, switchgear and backup electricity
• Cooling capable of removing heat from dense racks of chips
• Multiple high-speed fibre routes
• Physical and cyber security
• Fire protection and constant monitoring
• Technicians available around the clock

Customers can install their own servers or use infrastructure connected to cloud and network providers inside the facility. For AI, power density is especially important because racks packed with accelerators can consume far more electricity and generate far more heat than traditional business servers.

When NEXTDC reports megawatts, it is describing contracted IT power capacity, not a count of servers. The total electricity drawn by a facility can be higher because cooling, pumps and other supporting systems also need power.

Why the spending is suddenly so large

NEXTDC says 537 megawatts of capacity was under development at the end of FY2026, compared with 288 megawatts already built. Major projects include S4 Sydney and expansions at M2 and M3 Melbourne, as well as KL1 Kuala Lumpur.

The company expects 197 megawatts from its forward order book to begin billing during FY2027 and another 221 megawatts in FY2028. If that timetable holds, 74% of the backlog would convert within two years.

That expected switch-on is why management forecasts such a sharp financial jump. It guides to FY2027 net revenue of A$615 million to A$640 million, up from A$405 million, and underlying EBITDA of A$385 million to A$410 million, up from A$248.8 million.

Those are company forecasts, not completed results. Delivering them depends on construction, customer schedules and the availability of power.

The OpenAI connection

NEXTDC has also become part of Australia’s attempt to build “sovereign AI”—computing infrastructure located within the country and available for workloads that organisations may not want sent offshore.

In December 2025, OpenAI and NEXTDC announced a memorandum of understanding to plan a hyperscale AI campus and GPU supercluster at NEXTDC’s proposed S7 site in Eastern Creek, Sydney. NEXTDC describes S7 as a future site with more than 550 megawatts of planned capacity. OpenAI’s announcement NEXTDC’s S7 project page

The words “memorandum of understanding” are important. This is a collaboration framework, not proof that the full campus is financed, constructed or operating. NEXTDC’s binding 565.1-megawatt forward order book explicitly excludes memoranda of understanding, so the OpenAI plan should not automatically be treated as booked revenue.

Even so, it shows the scale of the ambition. AI developers increasingly want clusters containing enormous numbers of GPUs linked by very fast networks. Building one is closer to creating a new industrial precinct than renting a conventional server room.

The electricity system may be the real bottleneck

There is a reason data-centre companies increasingly talk about electricity before they talk about floor space.

The Australian Energy Market Operator estimates that data centres used about 5 terawatt-hours of electricity in FY2026, roughly 3% of electricity supplied through the National Electricity Market. Its central forecast rises to about 34 terawatt-hours by FY2036, or approximately 13% of grid-supplied electricity. AEMO’s 2026 data-centre forecast

AEMO also reported that 17 proposed data-centre projects representing up to 9 gigawatts of connection capacity were progressing through the transmission-connection process by the end of June 2026. Not all that requested capacity will be built or used at once, but the queue illustrates the competition for substations, transmission lines and firm electricity supply.

NEXTDC says power arrangements are in place across its contracted capacity. Nevertheless, turning an arrangement into an energised campus on schedule is a substantial engineering and regulatory task.

Growth has a water and efficiency question attached

The physical footprint cannot be separated from the growth story.

Reuters reported that NEXTDC’s fleet-wide power usage effectiveness rose from 1.44 to 1.49 in FY2026, while water usage effectiveness increased from 2.25 to 2.40 litres per kilowatt-hour. For both measures, lower is generally better. The company attributed changes to factors including new facilities being commissioned, operating conditions, leaks and metering reconciliation. Reuters’ report on NEXTDC’s energy and water use

Efficiency ratios can fluctuate while new capacity starts operating, so a single year does not settle the question. But data-centre growth will be judged not only by how quickly halls are built, but also by their effect on electricity prices, grid reliability, water supplies and local communities. FutureTechDose has separately explained what AI data-centre water figures actually measure.

A profitable year—with an accounting footnote

NEXTDC reported A$82.1 million in statutory profit after tax for FY2026, reversing the previous year’s loss. That number deserves context.

The company changed how several hyperscale properties were classified and measured after entering long-term agreements. A A$128.8 million property fair-value gain, together with associated tax effects, contributed to the reported profit. NEXTDC says that on its previous accounting basis, presented unaudited for comparison, FY2026 would instead have shown a A$103.9 million loss after tax.

Neither number alone describes the operating trajectory. Net revenue rose 16% and underlying EBITDA rose 15%, while the company simultaneously spent billions building assets that are expected to produce revenue later.

Cash generation also deserves attention. Net operating cash flow fell to A$99.9 million from A$222.6 million the previous year. NEXTDC reported A$876 million in cash and A$8.7 billion of pro-forma liquidity, but most of that larger figure consists of undrawn debt facilities and hybrid funding commitments—not cash already sitting in the bank. NEXTDC’s balance-sheet and accounting detail

What could go wrong?

The investment case is not simply “AI is growing, therefore every data centre wins.” Several things still have to go right:

1. Construction must stay on schedule. Delays in electrical equipment, cooling systems or building work could postpone billing.
2. Power must arrive when promised. Grid connections can take years and may face new technical or regulatory conditions.
3. The customers must ramp as expected. Binding contracts reduce demand risk, but timing, performance conditions and concentration still matter.
4. The capital must earn an adequate return. Spending up to A$5.75 billion in one year is extraordinary beside FY2026 net revenue of A$405 million.
5. Public acceptance cannot be assumed. Large campuses compete for land, electricity and water, bringing closer scrutiny from governments and communities.
6. AI infrastructure demand may change. More efficient chips and models could reduce power required for a given task, even as total AI use continues to expand.

NEXTDC has substantial liquidity and says its capital programme is principally directed toward capacity customers have already contracted. That makes this more than a speculative plan—but it does not remove execution or financing risk.

The bigger story

NEXTDC is interesting because it makes the invisible side of AI visible.

The company’s future will not be decided by a new chatbot benchmark. It will be decided by concrete pours, substations, cooling pipes, fibre links and the speed at which 565 megawatts of signed orders become operating capacity.

If NEXTDC delivers, its revenue base could change dramatically over the next several years, and Australia could host a much larger share of the infrastructure behind cloud services and artificial intelligence.

If construction or power availability falls behind, the enormous distance between “contracted” and “billing” capacity becomes the problem rather than the opportunity.

That is why NEXTDC’s latest numbers are so striking. The AI boom is no longer only about better software and faster chips. In Australia, it has become a multibillion-dollar race to build the rooms where the machines can actually run.

Reporting note

This article reflects information available on 4 September 2026. NEXTDC’s FY2027 revenue, EBITDA, capital-expenditure and delivery figures are forward-looking company guidance. The OpenAI–NEXTDC S7 arrangement is a memorandum of understanding, and the proposed campus is not yet an operating facility.

For a US example of the same demand for powered computing space, explore Core Scientific’s move from Bitcoin mining to AI data centres.

Sources and further reading

• NEXTDC FY2026 results announcement
• NEXTDC FY2026 results presentation
• OpenAI for Australia announcement
• NEXTDC S7 Sydney project page
• AEMO 2026 data-centre electricity forecast
• Reuters on NEXTDC’s FY2026 energy and water use

FutureTechDose covers biotechnology, AI infrastructure, energy and emerging technology for a general audience. This article is for general information and does not provide investment advice.