North American Electric Reliability Corporation released this assessment of the reliability and adequacy of the bulk power system in North America for the next ten years.

This unanimous decision by the Nevada Supreme Court could have impacts across the U.S. The Court lays out a clear and convincing explanation for why a personal wind turbine in a residential subdivision should be prohibited. In the order, Justice Jim Hardesty covers noise, property value impacts and the effect on aesthetics including shadow flicker. Excerpts of the order are provided below. The full order can be accessed at the below links.

DZ 6808 is a revision of NZS 6808:1998 Acoustics - The assessment and measurement of sound from wind turbine generators. The 1998 version was written prior to significant wind farm development in New Zealand. The basic methodology proved robust, but experience and research over the following decade brought to light numerous refinements and enhancements, which are now addressed in the revised draft.

The residents of Libertyville, IL struggled since April 2009 with noise and flicker from a 120-foot, 50 kilowatt Entegrity wind turbine erected within 250-feet of residential properties. Following a civil proceeding seeking relief from the noise and other nuisances, the Court issued a compromise ruling ordering turbine operation be restricted to weekdays only during the hours of 9am to 3pm. Below is an excerpt of the court transcript explaining the law supporting the Court's ruling. The full transcript can be accessed by clicking on the link below.

The below letter, submitted to Jerry Lien a staff analyst for the North Dakota Public Service Commission, details how NextEra (formerly FPL Energy) opted to address the problems of noise and shadow flicker caused by the Ashtabula Wind Energy facility.

The WHO Regional Office for Europe launched these updated Night noise guidelines for Europe. The guidelines provide ground-breaking evidence on how exposure to night noise can damage people's health, and recommends guideline levels to protect health. The new limit is an annual average night exposure not exceeding 40 decibels (dB), corresponding to the sound from a quiet street in a residential area. Sleepers that are exposed to higher levels over the year can suffer mild health effects, such as sleep disturbance and insomnia. Long-term average exposure to levels above 55 dB, similar to the noise from a busy street, can trigger elevated blood pressure and heart attacks. One in five Europeans is regularly exposed to such noise levels. A summary of the findings is provided below. Click on the link to access the full document.

The following links are to three audio interviews conducted by the Canadian Broadcasting Company to investigate Mr. d'Entremont's claim that noise from the Pubnico Point wind plant has driven his family from its home. Editor's Note: Real Player is required to listen to these interviews.

Wind power is a relatively new generator of electricity in Sweden. Legislation and regulation regarding noise from wind turbines in Sweden have been discussed. Eja Pedersen at Halmstad University has at the request of the Swedish Environmental Protection Agency prepared this report as a base for further discussions on regulation and guidelines on noise from wind turbines in Sweden. The report reviews the present knowledge on perception and annoyance of noise from wind turbines in residential areas as well as in recreational areas. It also summarizes regulations in some European countries. The author Eja Pedersen is responsible for the content of the report.

Stockholm, August 2003

SWEDISH ENVIRONMENTAL PROTECTION AGENCY Report 5308

Julian and Jane Davis reside on a farm in the Fens in Lincolnshire England. Shortly following the construction of a wind farm within 1000 meters of their home they had started to hear the noise of the turbines. This important paper, presented at the Wind Turbine Noise conference Sep 20-21, 2007, in Lyon, France, documents the “devastating effects of wind turbine noise pollution when wind farms are sited too close to homes or otherwise inappropriately sited.”

Wind turbines are large industrial structures that create obtrusive environmental noise pollution when built too close to dwellings. This annotated review of evidence and research by experts considers the impact of industrial-scale wind turbines suffered by those living nearby. First, the paper includes the comments by some of the families affected by wind turbines, as well as coverage in news media internationally. The experiences described put a human face to the science of acoustics.

Second, the paper reviews research articles within the field of acoustics concerning the acoustic properties of wind turbines and noise. The acoustic characteristics of wind turbines are complex and in combination produce acoustic radiation. Next, the paper reviews the health effects that may result from the acoustic radiation caused by wind turbines, as well as the health effects from noise, because the symptoms parallel one another. Primarily, the consequent health response includes sleep deprivation and the problems that ensue as a result. In addition, this paper reviews articles that report research about the body's response not only to the audible noise, but also to the inaudible components of noise that adversely affect the body's physiology. Research points to a causal link between unwanted sound and sleep deprivation and stress, i.e., whole body physiologic responses.

These injuries are considered in the context of Human Rights, where it is contended that the environmental noise pollution destroys a person's effective enjoyment of right to respect for home and private life, a violation of Article 8 of the European Court of Human Rights Act. Furthermore, the paper considers the consequent devaluation of a dwelling as a measure of part of the damage that arises when wind turbines are sited too close to a dwelling, causing acoustic radiation and consequent adverse health responses.

The review concludes that a safe buffer zone of at least 2km should exist between family dwellings and industrial wind turbines of up to 2MW installed capacity, with greater separation for a wind turbine greater than 2MW installed capacity.