Wind farm noise is carefully managed through strict regulation, with requirements varying by state (including ongoing monitoring in Victoria). Across Australia, noise limits are generally based on a combination of absolute noise levels and the existing background noise at nearby homes.
In most states the noise limit is determined by adopting either a prescriptive base noise limit, or 5 dB above the background noise (whichever is higher). The base noise limit applicable in Victoria and South Australia is 35 or 40 dB(A) (depending on zoning). New South Wales applies 35 dB(A), while Queensland sets base limits of 35–37 dB(A) depending on the time of day.
Before construction, developers must carry out detailed noise modelling to predict potential impacts on nearby properties. Once operational, wind farms are typically required to monitor noise levels and report results to regulators. Compliance is enforced through permit conditions (except for any recent Victorian projects) with mitigation measures implemented if needed to ensure compliance is achieved. It is typically a permit requirement for community complaints to be investigated.
