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Resource Documents: Montana (2 items)

RSSMontana

Unless indicated otherwise, documents presented here are not the product of nor are they necessarily endorsed by National Wind Watch. These resource documents are shared here 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. • The copyrights reside with the sources indicated. As part of its noncommercial effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations.


Date added:  March 30, 2011
Colorado, Impacts, Iowa, Montana, North Dakota, Photos, South Dakota, Texas, WyomingPrint storyE-mail story

Wanzek heavy/industrial constructors: photos

Author:  Wanzek Construction

Top of the World Wind Farm, Glenrock, WY, Duke Energy

Top of Iowa Wind, Kensett, IA, Madison Gas & Electric

Three Buttes Wind, Glenrock, WY-

Oliver County Wind, Center, ND, FPL/Next Era Energy Resources

NoTrees Wind, Odessa, TX, Duke-Energy


Langdon Wind, Langdon, ND, FPL/Next Era Energy Resources

Kit Carson Wind Farm, Burlington, CO, Duke Energy

Goat Mountain Wind, Robert Lee, TX, Edison Mission Energy

Endeavor Wind, Harris, IA, FPL/Next Era Energy Resources

Charles City Wind, Charles City, IA, MidAmerican Energy

Cedro Hill Wind Farm, Bruni, TX, Edison Mission Energy


Cedar Hills and Diamond Willow Wind Farms, Rhame, ND and Baker, MT, MDU Resources

Burleigh County Wind, Wilton, ND, FPL/Next Era Energy-Resources

Buffalo Ridge Wind Farm, White, SD, Iberdrola Renewables

Barton Wind, Barton, IA, Iberdrola Renewables

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Date added:  March 7, 2009
Grid, Idaho, Montana, Oregon, WashingtonPrint storyE-mail story

Very Low Wind Generation Period of Jan-09, and a 1-Year Lookback at Frequency of Very Low Wind Gen Periods

Author:  Bonneville Power Authority

The very low wind generation period of Jan-09 has ended, after:

• more than 11-1/2 continuous days with total wind gen <50 MW: 14-Jan-09 02:43:00 thru 25-Jan-09 17:13:00 (11 days, 14.5 hours);
and
• more than 8-1/2 continuous days <10 MW: 14-Jan-09 16:59:00 thru 23-Jan-09 07:37:00 (8 days, 14.6 hours)

How often in the past year have we seen others periods of “very low” wind generation?

The next plot shows the Percent of Time by Week Where Total Wind Gen Was <50 MW over the last 56 weeks. The installed wind capacity during this time was ~1,500 MW, so the 50 MW threshold represents ~3% of capacity. The full 56-week average was ~23%, that is, nearly a quarter of the time the total wind gen was less than 3% of total wind capacity.

Other than the very low wind gen period this month, the weeks of 1/21/08 (55.0%) and 10/27/08 (53%) had the next greatest frequency of low wind gen periods. There was a slight seasonality, with the fall months having somewhat more “very low wind gen” periods.

These very low wind gen periods highlight the high correlation (i.e., low diversity) among wind gen plants within the balancing authority area. [Twelve facilities totaling 1,301 MW were on line at the beginning of 2008; during the data period, five more facilities came on line, adding 470 MW; BPA’s grid covers Washington, Oregon, Idaho, and western Montana.]

Frequency of very low wind generation, 2008

[The accompanying data file includes average wind generation for every hour in these 56 weeks. The average hourly average was 361.1 MW (24% of 1,500 MW). The aggregate of the BPA wind plant generated at or above that rate 3,623 out of 8,779 hours, or 41.3% of the time. This accords with Rosenbloom’s law of wind turbine output: Whatever the capacity factor, any turbine or aggregate of turbines generates at or above its average rate only 40% of the time.]

Download original document: “Very Low Wind Generation Period of Jan-09, and 1-Year Lookback at Frequency of Very Low Wind Gen Periods

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