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Documents presented here are not the product of nor are they necessarily endorsed by National Wind Watch. These resource documents are provided to assist anyone wishing to research the issue of industrial wind power and the impacts of its development. The information should be evaluated by each reader to come to their own conclusions about the many areas of debate.

Date added:  January 11, 2017
North Dakota, TechnologyPrint storyE-mail story

Construction of Xcel Energy’s Courtenay Wind Farm, North Dakota

Author:  Xcel Energy | North Dakota, Technology

Download video (52-MB MP4) 100 Vestas V100 2-MW turbines Nearly 25,000 acres (101 km²) 22 miles of access roads Substation transformer: 262,000 pounds Substation increases voltage for transmission lines 17.1-mile 115-kV overhead transmission line from collection substation to interconnect substation More than 150 miles of underground cable in 50 miles of trench Tower base (platform) excavation depth: 9 feet 360 cubic yards of concrete, 28 tons of reinforcing steel Tower base (bottom third): 96,000 pounds, 128 anchor bolts Nacelle: 163,650 . . .

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Date added:  January 3, 2017
TechnologyPrint storyE-mail story

Grid-scale fluctuations and forecast error in wind power

Author:  Bel, G.; Connaughton, C.P.; Toots, M.; and Bandi, M.M. | Technology

Abstract: Wind power fluctuations at the turbine and farm scales are generally not expected to be correlated over large distances. When power from distributed farms feeds the electrical grid, fluctuations from various farms are expected to smooth out. Using data from the Irish grid as a representative example, we analyze wind power fluctuations entering an electrical grid. We find that not only are grid-scale fluctuations temporally correlated up to a day, but they possess a self-similar structure—a signature of long-range . . .

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Date added:  January 2, 2017
TechnologyPrint storyE-mail story

New insights into fluctuations of wind energy, with implications for engineering and policy

Author:  Okinawa Institute of Science and Technology Graduate University | Technology

Summary: The amount of energy generated by renewables fluctuates depending on the natural variability of resources at any given time. The sun isn’t always shining, nor is the wind always blowing, so traditional power plants must be kept running, ready to fill the energy gap at a moment’s notice. Because the grid has no storage, and unlike coal or nuclear, there is no control over the fluctuating production of renewable energy, the energy they produce has to be consumed straight . . .

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Date added:  December 21, 2016
Europe, WildlifePrint storyE-mail story

Patterns of migrating soaring migrants indicate attraction to marine wind farms

Author:  Skov, Henrik; et al. | Europe, Wildlife

Abstract: Monitoring of bird migration at marine wind farms has a short history, and unsurprisingly most studies have focused on the potential for collisions. Risk for population impacts may exist to soaring migrants such as raptors with K-strategic life-history characteristics. Soaring migrants display strong dependence on thermals and updrafts and an affinity to land areas and islands during their migration, a behaviour that creates corridors where raptors move across narrow straits and sounds and are attracted to islands. Several migration . . .

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