Wind Noise Modeling Consistently Below Actual Post Construction Measurements

Below is a chart presented by Mark Cool of the Firetower Wind Watch group in Massachusetts.  He has assembled a number of wind projects actual post construction dBA measurements and compares them with the noise modeling numbers presented in the wind developers' applications.  Shown on the chart is the range of dBA to which the measured readings exceed the developers' calculations based on modeling.  Remember, the section on modeling always touts the fact that the estimates are weighted to show the worst case scenario for the wind project.  Well, their "worst case" modeling is even worse in reality!

Projects in Maine include Mars Hill, Stetson II, Kibby, Beaver Ridge, and Vinalhaven.  It is helpful to note that the Vestas 3.0 MW turbines are now the favorite in place of the popular GE 1.5 MW, but the noise level still exceeds the modeling.  This is important to the upcoming application reviews and appeals here in Maine.  From Mark's post:  Below is a comparison of actual noise measurements vs the predicted noise using pre-contruction modeling at 10 separate wind projects in the northeast. Measured noise minus modeled sound levels.

 

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Comment by alice mckay barnett on September 4, 2013 at 9:21am
Steve Ambrose presented this graph at the last WNTAG (MassDEP Wind and Noise Technical Advisory Group) meeting (August 15th Boston).

 

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Maine Center For Public Interest Reporting – Three Part Series: A CRITICAL LOOK AT MAINE’S WIND ACT

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(excerpts) From Part 1 – On Maine’s Wind Law “Once the committee passed the wind energy bill on to the full House and Senate, lawmakers there didn’t even debate it. They passed it unanimously and with no discussion. House Majority Leader Hannah Pingree, a Democrat from North Haven, says legislators probably didn’t know how many turbines would be constructed in Maine if the law’s goals were met." . – Maine Center for Public Interest Reporting, August 2010 https://www.pinetreewatchdog.org/wind-power-bandwagon-hits-bumps-in-the-road-3/From Part 2 – On Wind and Oil Yet using wind energy doesn’t lower dependence on imported foreign oil. That’s because the majority of imported oil in Maine is used for heating and transportation. And switching our dependence from foreign oil to Maine-produced electricity isn’t likely to happen very soon, says Bartlett. “Right now, people can’t switch to electric cars and heating – if they did, we’d be in trouble.” So was one of the fundamental premises of the task force false, or at least misleading?" https://www.pinetreewatchdog.org/wind-swept-task-force-set-the-rules/From Part 3 – On Wind-Required New Transmission Lines Finally, the building of enormous, high-voltage transmission lines that the regional electricity system operator says are required to move substantial amounts of wind power to markets south of Maine was never even discussed by the task force – an omission that Mills said will come to haunt the state.“If you try to put 2,500 or 3,000 megawatts in northern or eastern Maine – oh, my god, try to build the transmission!” said Mills. “It’s not just the towers, it’s the lines – that’s when I begin to think that the goal is a little farfetched.” https://www.pinetreewatchdog.org/flaws-in-bill-like-skating-with-dull-skates/

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Hannah Pingree on the Maine expedited wind law

Hannah Pingree - Director of Maine's Office of Innovation and the Future

"Once the committee passed the wind energy bill on to the full House and Senate, lawmakers there didn’t even debate it. They passed it unanimously and with no discussion. House Majority Leader Hannah Pingree, a Democrat from North Haven, says legislators probably didn’t know how many turbines would be constructed in Maine."

https://pinetreewatch.org/wind-power-bandwagon-hits-bumps-in-the-road-3/

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