Introduction

With approximately 60 data centres currently in operation and 19 State Significant Development projects in the pipeline valued at $50.3bn (as of July 2026), New South Wales has established itself as Australia’s primary hub for digital infrastructure investment.

This rapid expansion brings with it a complex regulatory landscape. The New South Wales Government has responded with comprehensive policy frameworks, including dedicated Data Centre Guidelines released in August 2026, a streamlined approvals concierge function and ambitious performance standards. However, the intersection of federal energy mandates, state planning controls and community expectations creates a challenging environment for developers seeking timely and certain approvals.

This article examines the planning approval framework for data centres in New South Wales, identifies key legal risks and provides practical guidance for navigating the regulatory environment. The broader national policy context and comparison with Queensland and Victoria are addressed in our introductory article, Planning approvals for data centres: A national perspective. 

Federal context: Net generators, not net users

The federal policy framework fundamentally reshapes the commercial assumptions underpinning data centre development across all Australian jurisdictions, including New South Wales. For a state already grappling with grid capacity constraints and ambitious electrification targets, the federal overlay introduces both complexity and opportunity.

Legislative and planning framework

The primary approval pathway for data centres in New South Wales is State Significant Development (SSD) under Part 4 of the Environmental Planning and Assessment Act 1979 (NSW) (EP&A Act).

State significant development pathway

Data centres are classified as SSD pursuant to section 4.36 of the EP&A Act where they satisfy the criteria in clause 25 of Schedule 1 of the Planning Systems SEPP, specifically where the facility has an electrical capacity exceeding 15 megawatts (MW). Given modern hyperscale facilities routinely exceed this threshold, almost all significant data centre proposals will be assessed through the SSD pathway.

The SSD pathway involves:

• Secretary's Environmental Assessment Requirements (SEARs) scoping the assessment
• preparation of an Environmental Impact Statement (EIS)
• public exhibition and agency referrals
• assessment by the Department of Planning, Housing and Infrastructure (DPHI)
• determination by the Independent Planning Commission (IPC) or Minister's delegate.

New South Wales data centre guidelines

New South Wales released comprehensive Data Centre guidelines (Guidelines) in August 2026 structured around six principles:

• world-class environmental and efficiency standards
• no net cost to consumers
• fund additional supply of water and energy
• enhance local community infrastructure
• invest in future industries
• training and skills development.

The Guidelines form part of a three-pillar Policy Framework comprising the Guidelines themselves, regulatory reform for energy cost recovery and an Independent Pricing and Regulatory Tribunal (IPART) water pricing review.

The Guidelines articulate the Government’s support and expectations for expediting productive data centre investments in New South Wales, while managing the resource needs and environmental impacts of growth in data centre activity. They are consistent with the Australian Government’s Expectations of Data Centre and AI Infrastructure Developers published in March 2026.

A common theme in the Guidelines is the importance of appropriate site selection. Consultation feedback identifies there are fewer complexities when data centres locate on brownfield sites with energy and water infrastructure capacity that are away from sensitive areas like homes and schools, rather than around dense urban populations.

The Guidelines emphasise that early engagement with DPHI during site selection and initial design development and meeting the performance measures outlined in the Guidelines, will support faster and easier planning assessments.

SSD data centre proponents should engage with the community as early as possible and throughout the process, ensuring engagement is meaningful and proportionate to the scale and impact of the project. DPHI sets a high bar and clear expectations for engagement with local communities on SSD projects.

The New South Wales Government will review the Guidelines annually or as required to respond to any material changes in the data centre operating environment, including to capture improvements in efficiency, to ensure they remain fit for purpose.

The New South Wales Government is establishing an Industry Advisory Forum for ongoing engagement with the data centre industry. The Forum will help to ensure policy settings are proportionate and account for evolving technologies and market conditions and will advise the New South Wales Government on the delivery of further enhancements to drive a sustainable and successful data centre industry.

Data centre proponents are encouraged to engage in benefit-sharing with local communities hosting new developments. Benefit-sharing should be collaborative, transparent, proportionate and community-focused. However, benefit-sharing arrangements are matters outside the development assessment process and should not be included in any development application associated with data centres.

Performance standards 

The Guidelines establish mandatory performance measures including:

Whilst there is currently no statutory weight on the Guideline, the SEARs will still inform the relevant parameters that SSDAs will need to contemplate as part of the approval process.

Appeal and legal challenge risks

The legal challenge landscape for data centres in New South Wales is shaped by the regulatory framework applicable to SSD projects.

Judicial review

The absence of a precinct-level planning framework for data centres means that cumulative impacts, including heat, noise and emissions, are assessed project-by-project. At scale, this creates vulnerability to legal challenge on the basis of inadequate assessment of cumulative effects.

Under section 9.45 of the EP&A Act, judicial review proceedings may be commenced by any person within 3 months of the determination. Grounds for challenge include jurisdictional error, failure to consider mandatory relevant considerations, denial of procedural fairness and unreasonableness.

Merit appeals

Merit appeals are available to the applicant within 6 months of determination. Objector merit appeals are only available for 'designated development', which data centres typically are not under current classifications.

IDA endorsement

The Investment Delivery Authority (IDA) endorsed 15 data centre projects worth $51.9bn in March 2026. IDA endorsement provides administrative coordination and facilitation, including prioritisation within government processes, but it does not confer planning approval or alter legal rights. Developers should understand that IDA endorsement is administrative in character and does not extinguish or modify appeal rights under the EP&A Act.

Diesel generator risks

Backup diesel generators attract Clean Air Regulation Group six pollutant limits regardless of operating hours. For facilities in Sydney, the cumulative generator capacity is comparable to larger gas power plants, creating potential objector leverage on air quality grounds.

Streamlined approval pathways

New South Wales has implemented several measures to expedite data centre approvals:

• concierge function: A dedicated concierge function within DPHI provides pre-assessment support and guides proponents through the approval process
• accelerated SEARs: SEARs to be issued within two months of application
• 75-day assessment: Target of 75 days for the DA assessment process once the EIS is lodged.

While these measures represent genuine expedients, developers should note that community opposition and inadequate environmental assessment can still derail timelines regardless of administrative targets. The IDA endorsement of 15 data centre projects worth $51.9bn in March 2026 demonstrates the scale of government commitment to facilitation, but endorsement is administrative in character, it does not confer planning approval or extinguish legal rights.

Additionally, in March 2026, federal lawmakers published their expectations of data centres and AI infrastructure developers, signalling a coordinated federal-state approach to approvals facilitation. The New South Wales Government's response through its concierge function and expedited assessment targets represents one of the most developed state-level facilitation frameworks in Australia.

Energy and water requirements

New South Wales’ requirements in this domain are among the most prescriptive in Australia:

• AEMO forecasts energy consumption from data centres will double from 5% of New South Wales' grid-supplied energy in 2026 to 11% by 2030
• PPA requirements mandate a minimum 40% wind generation component with storage capacity of at least 25% of generation for four hours
• 100% recycled water mandated for cooling purposes
• IPART water pricing review underway to establish cost recovery frameworks
• grid reliability contributions require facilities to curtail demand by 25% for up to two hours during network stress events.

These requirements, combined with the federal 'net generator' obligation, create a dual compliance burden that must be addressed in project feasibility assessments from the outset.

Key takeaways for developers

Read the full series

• Planning approvals for data centres: A national perspective
• Data centre planning approvals in Queensland
• Data centre planning approvals in Victoria