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EverPower: Scioto Ridge Wind Farm will be asset to community

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Posted by on January 17, 2014. Filed under Featured,Local News,Protected,Recent Headlines,Recent Pictures. You can follow any responses to this entry through the RSS 2.0. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to EverPower: Scioto Ridge Wind Farm will be asset to community

  1. jhughes

    January 18, 2014 at 3:01 pm

    Dagger is not being completely forthcoming about the turbine size matter. The truth is that most developers today prefer under-rated devices with over-sized blades to maximize revenues while getting away with submitting a lower nameplate interconnection request to the grid operator. It is far more likely they will choose a greater number of turbines with lower rating, longer blades and shorter towers, like the two units recently erected at Honda Transmission.

    The lower rated turbines reach their maximum potential in lower wind speeds, leading to steeper changes in output as wind speeds vary. The grid operator should consider not only the maximum output of the devices, but also the maximum rate of change in output as wind speeds vary over a period of several minutes to several hours.

    Also the under-rated turbines with larger blades are often paired with masts that are less than twice the blade length. This leads to a swept area coming down within 100 ft. of the surrounding land, increasing noise concerns for near neighbors and threatening larger number of more species of flying animals. The rhythmic low frequency noise from these machines is caused when each blade swings down and passes the mast. This compresses a tall column of air all at once and creates a micro line source of noise – one which carries horizontally to the ground. The nearer the blade circle comes to the ground, the worse the low frequency and sub-sonic noise issue may become for near neighbors.

    Tom Stacy

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