Victoria released its data centre rulebook on 22 September. Read alongside the NSW guidelines and the National Cabinet agreement, it settles who pays for the power and water infrastructure that large new loads need. Housing has no equivalent rule.

For years, when the construction industry talked about capacity, the conversation came back to people. Enough builders. Enough electricians. Enough apprentices.

Those questions still matter. But over the past five weeks three governments have started writing rules about a different constraint, and very little of the coverage has connected it to housing.

The rules are about data centres. What they do is set a precedent for who funds the electricity and water infrastructure a large project needs before it can operate.

That precedent is now written down for one class of development. For housing, it is not.

Three governments have now set rules for who funds large load infrastructure

On 26 August 2026, National Cabinet agreed that large data centres bring material energy, water and land use impacts that need to be managed, and that the Commonwealth would work with states and territories to develop consistent mandatory standards for data centre energy, water and land use.

NSW published its Data Centre Guidelines in August 2026. Victoria released its Sustainable Data Centre Action Plan on 22 September 2026, and it is the most detailed of the three. Victoria’s plan states that Commonwealth legislation on those standards is intended for early 2027 and is designed to complement rather than duplicate state planning and approval processes.

None of this is housing policy. All of it concerns the same networks that serviced residential land depends on.

What the Victorian plan requires data centres to pay for

The plan sets several energy requirements. Two of them matter well beyond data centres.

The first is that operators offset their actual operational electricity use by investing in new renewable generation and storage. Victoria calls this bringing your own supply.

The second is that operators cover all connection costs and network augmentations required as a direct result of their investment, including necessary upstream augmentations.

The water requirements run the same way. Facilities are expected to meet the full cost of the water infrastructure needed to service the connection, and to contribute where their demand brings forward an augmentation that other customers would otherwise have funded later.

That last clause is worth reading twice. It puts a price on queue position.

Connection cost and upstream augmentation

A connection cost is what a proponent pays to join a site to the existing network. An upstream augmentation is the work needed further back in the network to carry the new load, such as a substation, a transmission upgrade or a larger trunk main. Connection costs have long sat with the proponent. Upstream augmentation has more often been funded by the utility and recovered across the wider customer base over time.

Most of the demand in the connection pipeline will never be built

The headline forecasts are large. AEMO’s 2026 Electricity Statement of Opportunities, published 25 August, has data centre consumption in the National Electricity Market rising from about 5 terawatt hours in the 2026 financial year to around 34 terawatt hours by the 2036 financial year, lifting their share of grid supplied electricity from roughly 3 per cent to about 13 per cent.

Sitting underneath that forecast is a set of numbers that reads very differently.

AEMO built it from 225 projects in development carrying 67 gigawatts of combined capacity. Of the projects in development at the 2025 report, 36 per cent were cancelled. Operating facilities used about 27 per cent of their grid connection capacity last financial year. New facilities take five to 10 years to reach capacity.

In NSW, Oxford Economics, which prepared AEMO’s data centre forecast, estimates six in every seven megawatts of connection requests are phantom demand. Utilities consulted by the NSW government put the share of applications likely to proceed at around 20 per cent.

Builders know this pattern. It is the gap between an approval and a slab, measured in megawatts instead of lots.

Water applications are not water approvals

The Victorian water figures make the same point more starkly.

Across the Melbourne and Geelong networks, data centres currently draw less than 1 per cent of potable drinking water. In Greater Western Water’s service area, 13 of 15 operating facilities used 33 megalitres between them over the past year.

Greater Western Water is now assessing 19 data centre applications seeking a combined 19,714 megalitres a year, roughly 4 per cent of Melbourne’s supply. The plan is explicit that applications are not approvals and that not all proposed projects will proceed.

It is the gap between an approval and a slab, measured in megawatts instead of lots.

Housing’s trunk infrastructure has no equivalent funding rule

Serviced land is zoned, planned and connected to the trunk infrastructure needed before lots can be registered. Approved land carries a development approval. The two get counted as though they were the same thing, and they are not.

Where trunk capacity is missing, the mechanisms for funding it look nothing like what Victoria has just written for data centres.

In South Australia, a utility’s capacity to build growth infrastructure is set inside a pricing determination made once every several years, which is why SA Water could not confirm capacity for 340 homes at Kadina and the decision moved into a 2028 cycle. In Queensland, the Residential Activation Fund’s $2 billion is now close to fully allocated across two rounds, and Round 1 funding agreements require completion within three years of execution, which puts most of the resulting lots into the market from around 2028. In Western Australia, developers pay headworks charges to connect, which land at the front of the cash cycle rather than the back, and that timing sits directly on the cash flow position of the business.

So residential development funds its own connection, waits on a determination or a grant round for the augmentation behind it, and has no written claim on queue position.

One class of large load is now being told to fund upstream augmentation as a condition of approval. The other is still waiting for a pricing cycle.

Where the servicing rules push development next

The plan also decides where data centres can go, and that answer is not neutral for housing.

Data centres will be prohibited on residential zoned land, with a 150 metre buffer between a residential building and a proposed data centre building enforced through the planning system. In rural zones they will be prohibited unless located near, and able to be serviced by, infrastructure critical to their operation: major transmission, substations, renewable energy facilities, battery storage or recycled water infrastructure.

Read plainly, that directs the sector onto industrial land where servicing already exists.

The land use conflict we documented when NEXTDC bought into Geelong’s planned housing precinct gets a partial planning answer from these rules. The network capacity question does not. Both classes of development still draw on the same augmentation queue, and the rules now steer one of them toward exactly the locations where existing capacity is already counted as future housing supply.

Victoria has also extended referral status to VicGrid and the relevant water corporation for all data centre applications, including those decided by councils. Grid and water capacity become a formal input to the planning decision rather than a problem found afterward.

That is a workable model. It has not been applied to residential subdivision.

What is still unsettled

The Victorian requirements are not retrospective, so applications already under assessment are not caught. Detailed siting, design and built form guidance is to be developed through 2027, and the Local Investment Guarantee covering local jobs, training and community infrastructure is still to be designed with councils and industry.

The compliance detail behind the energy rule is also unfinished. Victoria states that verification and firming requirements will be settled in step with the Commonwealth standards, and that the Energy and Climate Change Ministerial Council is yet to consider rule changes recognising data centres as market participants able to demonstrate offsetting demand.

For builders reading this as a market signal rather than a policy debate, the firm part is narrower than the forecasts. Governments have accepted that network capacity is a condition of approval for large loads, and that the proponent funds the upstream work. The mechanism exists and it is written down. It applies to one sector.

Whether it reaches residential land is the question worth watching across 2027, because it is the same constraint on the same networks, with a decade of announced housing targets sitting on top of it. These are the conditions shaping the construction pipeline that will decide which projects move first.

The Good Builder Take

The number to hold onto is 33 megalitres against 19,714 megalitres. Actual use against applications, in one utility’s service area. Data centre demand is real and it is growing fast, but the pipeline figures being quoted at builders rest on projects that historically cancel at a rate above a third. What is not speculative is the regulatory shift underneath them. Three governments have now decided that a large new load pays for its own upstream network capacity. Residential subdivision has been arguing the opposite side of that question for years, and losing it in pricing determinations and grant rounds. The rule builders should want is the one data centres just got.

Frequently asked questions

Related articles

• SA Water cannot confirm capacity for 340 homes at Kadina, and the decision now sits in a 2028 pricing cycle
• Queensland has now allocated the whole $2 billion Residential Activation Fund. The lots it buys arrive from 2028
• When AI needs a building permit: how the data centre boom is draining the trades that build homes

Last updated 29 September 2026. This article reports policy settings current at that date. Commonwealth legislation on data centre energy, water and land use standards is expected in early 2027.

General information only. This article reports on published government policy and market forecasts and does not take account of the circumstances of any particular business or project.

Author: TGB Editorial