Australia’s data centre market is no longer just a land and capacity story.
As artificial intelligence, cloud demand and compute intensity grow, the defining questions are power, water and efficiency.
How developers deal with these issues will be central for viable projects, confident investment and assets that deliver long-term value for their owners, tenants and communities.
Power is the central commercial constraint
In many locations, power availability is changing how potential data centre sites are valued. The question is whether sufficient power can be secured, connected and energised within a timeframe that supports tenant commitments, financing assumptions and the intended path to revenue.
A site with large theoretical capacity but an uncertain connection pathway may be less valuable than a smaller site with a clearer and more bankable route to energisation, because connection timing directly affects development sequencing, leasing strategy, commissioning, capital deployment and income generation.
In a constrained market, developers may seek to secure available grid capacity ahead of a fully resolved project, which can create a gap between capacity requested and capacity that is genuinely committed, fundable, deliverable or ultimately required. If this becomes widespread, the market could see inflated demand signals, speculative or ‘phantom’ sites, and network capacity tied up by projects that may not proceed as proposed.
For any serious site assessment, headline megawatts need to be supported by a clear view of how the connection will actually be delivered. The commercial weight should sit on the maturity of the connection pathway, network or authority commitment, likely augmentation requirements and ability to stage energisation in line with tenant demand and revenue timing.
The rise of AI and high-performance computing means higher rack densities and more intensive workloads. While higher rack densities can increase a site’s revenue potential, they also demand more electrical capacity, more complex cooling, more robust redundancy and more demanding commissioning.
A 20kW per rack, 60kW/rack and 100+kW/rack scheme each carries different power strategies, revenue models, risk profiles and investment outcomes.
Liquid cooling considerations
Liquid cooling (including direct-to-chip systems, rear-door heat exchangers and other configurations) can reduce cooling energy intensity and support higher total IT loads within a similar building envelope. The result may be a more productive asset with a materially different power profile – but this still requires careful cost planning.
Higher-temperature liquid cooling can create further options. In some applications, warmer water loops can allow heat rejection through dry coolers, reducing reliance on traditional refrigeration plant, improving energy performance and reducing water consumption from evaporative systems.
The commercial assessment needs to consider the wider impact on the building. Additional fluid loads, distribution pipework, pumps, manifolds, controls and higher-density rack configurations increase the demands on slabs, piles and structural systems. The associated plant, access, maintenance and acoustic requirements can also expand the building envelope. An apparently efficient cooling solution may shift costs into structure, plant space, building services integration, commissioning and long-term maintainability.
One of the biggest misconceptions is that more efficient cooling automatically reduces electricity consumption. In practice, improved cooling often enables higher rack densities and greater compute capacity. The facility may therefore consume more total electricity, even though it operates more efficiently on a per-kilowatt basis.
Liquid cooling may not always be the preferred answer, but it does broaden the commercial and technical options. The strongest choice is the one that delivers the best whole-of-project outcome rather than just the lowest cost.
Water strategy is part of the investment case
Depending on the cooling architecture, data centres can place significant demand on water networks. As regulators, utilities and communities place greater scrutiny on water security, proponents need credible strategies to minimise, substitute, recycle or offset water demand.
Water recycling can reduce demand and strengthen sustainability, but it needs to be assessed through a whole-of-life commercial lens. Capital and operating costs can vary significantly depending on factors such as treatment, pumping, storage, approvals, maintenance, and performance guarantees.
There is also an impact on energy. Recycling water involves treatment and distribution – an additional energy load that needs to be costed and tested. A water-saving option that increases power demand may still be the right answer, but the trade-off needs to be clear.
Connecting sustainability and performance
Many sustainability decisions are made during concept and reference design and will influence the facility’s future operating profile. Metrics such as NABERS, power usage effectiveness (PUE) and water usage effectiveness (WUE) help shift the conversation from design intent to operational performance.
For owners and investors, sustainability measures need to be viewed through a broader lens than initial capital cost. A mature cost strategy should test the relationships between capital cost, IT load, rack density, redundancy, PUE, WUE, embodied carbon, operating cost, maintenance, tenant flexibility and asset saleability.
The next phase of growth
For owners, operators and investors, power and water will shape which data centre projects proceed, how quickly they can be delivered and how well they perform.
Power and water should not be seen as separate technical workstreams but as components of an integrated commercial strategy. Early investment in clear, costed and deliverable power and water strategies will help the sector thrive.
Many of the electrical upgrades, recycled water schemes and network augmentations delivered for data centre projects continue to benefit surrounding communities long after construction is complete. Better communicating these wider infrastructure benefits will become increasingly important as the industry seeks to strengthen its social licence.tructure benefits will become increasingly important as the industry seeks to strengthen its social licence.
