Wind Farm Noise: Why Acoustic Compliance Matters More Than Setback Distance
Darling Downs Environment Council | 06/04/2026
Queensland needs renewable energy, and wind farms will play an important role in that transition. But supporting wind energy does not mean assuming every project is acceptable simply because it meets a minimum setback distance.
Recent concerns about wind farm noise in Queensland raise a broader planning question: do Queensland’s planning provisions provide adequate protection for neighbours that will potentially be exposed to noise impacts from operating wind farms?
Recent concerns about proposed and operating wind farms in Queensland show why this issue matters in practice. Concerns have been raised about whether operating turbines at some project sites will cause unreasonable disturbance to neighbours and other sensitive land uses. Concerns have been raised about post-construction noise, while a compliance report by an independent acoustic consultant found wind farms have met relevant criteria at monitored locations while operating under certain mitigation conditions. These examples point to the same broader issue: communities need to understand how acoustic criteria are assessed, monitored and enforced after approval.
Key point: This article does not argue that a minimum setback distance of 1.5 km is always appropriate or inappropriate. It argues that setback distance alone is not the protection. The relevant question is whether wind farm noise can meet the applicable acoustic criteria at nearby sensitive receptors, including night-time noise limits designed to protect sleep.
What Queensland’s wind farm framework actually requires
Queensland’s planning framework does not assume that wind turbines are automatically appropriate if they are located 1.5 km from a dwelling.
The current framework is contained in State code 23: Wind farm development of the State Development Assessment Provisions (SDAP), supported by the Queensland Government’s July 2025 planning guideline.
For non-host dwellings, the framework requires two separate things:
- Compliance with acoustic criteria – this is the primary legal test.
- Unless the affected landowner agrees to a shorter distance through a deed of release, a minimum of 1.5 km separation distance between turbines and sensitive land uses on non-host lots is required.
For non-host dwellings, the current Queensland framework requires that predicted wind farm noise – assessed as the outdoor A-weighted equivalent continuous acoustic level (LAeq) – must not exceed:
- At night (8 pm–6 am): 35 dB(A), or the existing background noise level measured as LA90 plus 5 dB(A), whichever is greater.
- During the day (6 am–8 pm): 37 dB(A), or the existing background noise level measured as LA90 plus 5 dB(A), whichever is greater.
In practice, this means a project can satisfy the 1.5 km setback requirement and still fail the acoustic requirement. A project located at exactly 1.5 km is not acceptable unless the proponent can demonstrate through acoustic modelling that the predicted noise level remains within those limits at the dwelling.
The 1.5 km figure is not intended to guarantee compliance. It is a figure included in the Code as a distance which must be clearly recognised in deeds of release, along with the accepted noise criteria, if the distance is under that amount.
Queensland’s September 2024 revisions to State code 23 strengthened the position of non-host landholders as utilising noise criteria means that the distance from turbines can not be used as a reason for not meeting noise requirements. Earlier versions of the framework included an “acceptable outcome” pathway under which all turbines more than 1,500 metres from sensitive land uses enabled a wind farm application to proceed under the ode assessment process. In addition, since 2025, windfarms are now required to undergo the full impact assessment process under the Planning Act 2016 which requires full submission and legal objection opportunities. Code assessment involved less opportunities for public scrutiny: there is no mandatory public notification, no right for community members to make submissions, and no third-party appeal rights. The Planning (Wind Farms) Amendment Regulation 2025, which came into effect in February 2025, then made all wind farm applications subject to mandatory impact assessment under the Planning Act 2016.
Proponents must now demonstrate compliance with all performance outcomes and the purpose statement through public assessment, and affected community members have the right to make submissions and bring merits appeals.
The 1,500-metre reference point remains relevant in relation to deed-of-release arrangements, but the practical legal question has always been, and remains, whether the project can satisfy the acoustic criteria at nearby dwellings.
The July 2025 Planning Guideline states that even where a landowner has agreed to a lesser setback through a deed of release, an outdoor nighttime acoustic level exceeding 45 dB(A) or 5 dB(A) above background is stated in the Guideline as unlikely to be acceptable due to the potential for sleep disturbance. The Guideline links that absolute guideline protection level to the World Health Organisation’s 1999 Guidelines for Community Noise.
What RTI documents show
Internal Queensland Government documents from 2015, released under Right to Information, do not show that the Queensland Government formally concluded that a 1,500-metre setback was acceptable.
What they do show is that there was disagreement within the government during the development of the draft wind farm code.
One RTI document records comments from a specialist in environmental noise, within the Queensland Government at the time, arguing that a 1,500-metre buffer “will not be sufficient for the current size of wind turbine.” The specialist also expressed concern that the proposed acoustic criteria might not adequately protect health and well-being.
The specialist further raised concerns about whether standard A-weighted measurements gave sufficient attention to low-frequency noise, infrasound, annoyance and sleep disturbance. He specifically argued that by design, the A-weighting process substantially attenuates low-frequency and infrasound content, making those components effectively impossible to assess using the standard dB(A) metric. Those methodological concerns remain debated in the scientific literature. The National Health and Medical Research Council’s published position is that there is no consistent evidence that wind farms cause adverse health effects in humans, and its information paper states that there is no direct evidence considering possible health effects of infrasound or low-frequency noise from wind farms specifically.
The technical specialist’s comments show that at least one government noise specialist believed larger turbines could require greater separation distances or stricter noise controls.
However, it is important not to overstate the significance of this. The specialist’s comments were internal technical advice during the development of the code. They were not adopted as the Queensland Government’s final position.
Approximately two weeks after that review was completed and circulated, a senior departmental executive stated in RTI-released internal correspondence that the department had “no concerns” with the draft code because it was based on independent technical advice.
The discussion about greater setback distances for larger turbines remains relevant today. Wind turbines proposed for recent projects are around 247 metres in total tip height – substantially larger than those being considered when the draft code was under development in 2015, including earlier projects at around 180 m tip height.
Why turbine scale makes performance-based assessment essential
The broader evidence shows that a simple setback distance requirement will not be either universally adequate or universally inadequate – factors such as turbine scale, terrain, weather conditions, background noise and operational controls all affect whether a project can meet acoustic criteria at nearby sensitive receptors.
Modern turbines are much larger than those commonly proposed when the original 1.5 km separation distance was introduced. In some recent Queensland projects, turbines of approximately 247 metres in tip height have been proposed, according to publicly available project documentation.
NSW’s current Wind Energy Guideline confirms that turbine scaling is sector-wide, stating that utility-scale wind turbines in NSW are now typically around 200 m to 250 m high, with some proposals up to 300 m.
Larger turbines generally have greater sound power output, and their greater hub height reduces the opportunity for terrain and vegetation to shield noise propagation – a point the NSW guideline also makes explicitly.
Noise outcomes also depend on topography, wind speed and direction, atmospheric conditions, the number and arrangement of turbines, the background noise environment, and whether several turbines interact acoustically at the same location.
What the health and noise evidence says in comparison with Queensland
The World Health Organisation’s Environmental Noise Guidelines for the European Region conditionally recommend reducing wind turbine noise exposure below 45 dB Lden. That is an exposure metric – a day-evening-night weighted average – not a setback rule, and it cannot be directly converted into a universal distance. It reflects the broader conclusion that higher levels of wind farm noise are associated with increased annoyance and reduced amenity.
The Australian NHMRC reached a more cautious conclusion. Its 2015 statement found no consistent evidence that wind farms cause adverse physical or mental health effects in humans. Its accompanying information paper found consistent though poor-quality evidence of annoyance, less consistent poor-quality evidence of an association with sleep disturbance, and noted, based on parallel evidence, that wind farm noise is unlikely to disturb sleep at distances greater than 1,500 metres. NHMRC also emphasised that the underlying evidence was limited and generally of poor quality.
That is important. It means the available evidence does not justify claiming that 1.5 km is generally of concern . But it also does not justify assuming that every project at 1.5 km will necessarily comply.
Why a simple setback rule is not enough
The strongest regulatory and technical guidance does not rely on a single setback distance.
South Australia’s EPA guidance explains that wind turbine noise and background noise both vary with wind speed, so a single distance or base noise level is not sufficient to predict impact. New Zealand Standard NZS 6808:2010 – used in Victoria and other Australian jurisdictions – relies on a performance-based noise criterion of 40 dB(A) LA90 or background noise plus 5 dB(A), whichever is greater, rather than a universal setback distance.
None of these frameworks endorse a single safe distance. They all use performance-based standards that require demonstration of compliance at the affected dwelling, under real site conditions.
The broader evidence supports a more careful conclusion: there is no universally “acceptable ” setback distance, and larger turbines make rigorous, project-specific assessment more important, not less.
What should change
The evidence does not support treating 1.5 km as either a guaranteed appropriate distance or a guaranteed inappropriate distance.
What it does show is that, for larger modern turbines, a fixed setback alone is not enough. The key question is not whether a project is 1.5 km away, but whether it can comply with the applicable acoustic criteria at nearby dwellings under real operating conditions.
As the RTI documents discussed above show, there was internal disagreement within government about whether 1.5 km would remain adequate as turbines became larger. The broader scientific and regulatory literature supports a related conclusion: there is no universally “appropriate” setback distance, and larger turbines make rigorous, performance-based assessment more important, not less.
The changes made to Queensland’s planning system to require impact assessment of all projects create stronger protection for communities questioning how living alongside wind farms will affect them. It’s important that communities are given reassurance that the planning framework requires:
- Robust project-specific acoustic modelling.
- Transparent public access to the assumptions, inputs and results used.
- Independent review where concerns are raised.
- Independent post-construction monitoring at nearby non-host dwellings.
- Strong enforcement where exceedances are confirmed.
Three practical improvements would strengthen the current framework:
- Guidance: Issue clear public guidance explaining that the September 2024 removal of the acceptable outcome pathway means setback distance alone can no longer be used as a compliance shortcut, and that the February 2025 regulatory changes require all wind farm applications to demonstrate acoustic compliance through full impact assessment regardless of distance from non-host dwellings.
2. Monitoring: Ensure post-construction noise monitoring is independent, clearly reported and easy for communities to access and understand. Queensland’s planning guidance already anticipates operational noise monitoring and associated reporting through approval conditions. The practical issue is whether communities can easily find the relevant monitoring plan, reports and compliance outcome, and understand whether the applicable acoustic criteria are being met. Monitoring at private dwellings would require landholder authorisation.
3. Enforcement: Require mitigation measures where post-construction monitoring or regulatory investigation confirms that the applicable acoustic criterion has been exceeded.
Queensland needs renewable energy, including wind energy. But public confidence depends on transparent evidence, rigorous acoustic assessment, independent monitoring and effective enforcement – not on assuming that any single setback distance is either automatically safe or automatically unsafe.
DDEC acknowledges the Giabal, Jarowair and Western Wakka Wakka peoples as the traditional custodians of the land on which we work.
Sources and references
- State code 23: Wind farm development, SDAP version 3.2 (Queensland, February 2025)
- Planning guideline: State code 23: Wind farm development (Queensland Government, July 2025)
- RTI-15-127, File A – Internal Queensland Government correspondence, August–September 2015, released under the Right to Information Act 2009 (EHP)
- NHMRC Statement: Evidence on Wind Farms and Human Health (February 2015)
- NHMRC Information Paper: Evidence on Wind Farms and Human Health (February 2015)
- World Health Organization: Environmental Noise Guidelines for the European Region (2018)
- NSW Wind Energy Guideline (NSW Department of Planning, 2023)
- South Australian EPA: Wind farms – environmental noise (SA EPA)
- New Zealand Standard NZS 6808:2010: Acoustics – Wind farm noise
- World Health Organization: Guidelines for Community Noise (1999)
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