What is the real impact of wind turbines on birds?


What is the real impact of wind turbines on birds?

what is the level of impact of wind turbines on birds like the eagle

 
Over the years many different organizations have been trying to determine the real impact of wind turbines on birds. Unfortunately, no one association is tasked with the job of keeping track of these numbers, and most of the information that has been passed along is old and misused.
 
One of the ‘case studies’ for determining the number of bird deaths from wind farms is the Altamont Pass Wind Farm, which is one of the least accurate sources of measurement. Why? Firstly, because it was one of the original and largest wind farms put into operation, back in 1981, not a lot was known about creating an environmental assessment before any installation of wind energy. Nobody thought to determine whether or not it was a proper site for a wind farm. Unfortunately, we now know that this area is a predominant migratory zone and idyllic habitat for many birds, including the federally protected Golden Eagle.
 
Secondly, the original data dates back to the start of operations, which at that time included many small wind turbines with fast moving blades. Since then, many wind turbines manufacturers have increased blade length and slowed the blades down to make operation safer and more efficient; which has resulted in less bird deaths over time. Unfortunately, this has not been accounted for in the cumulative data.
 
So what is the real level of impact now? Well we know one thing for sure, site evaluations for new wind farms include rigorous environmental assessments to minimize and eliminate the impact of wind turbines on birds. Additionally, with wind turbine blades that are much larger, they spin much slower as well, which further protects birds from possible hits.
 
It is safe to say that the impact of wind turbines on birds is being reduced significantly every year, as improvements are being made to the design of wind turbines, and as we more carefully select sites for wind energy.
 

Posted By Sally on July 10, 2014 | 0 Comment

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