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Elk River Wind Power Project Delivers Renewable Energy

May 22, 2006   |   10 Comments

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"The benefits of projects like Elk River are immense -- contributions to rural economies, jobs, and above all, clean, cost-competitive wind power."

-- Raimund Grube, PPM WindPower VP
10 Reader Comments
Comment
1 of 10
May 22, 2006
500,000 Mwh from 150 Mw works out to a load-factor of 0.41, seems too good to be true??
Comment
2 of 10
May 23, 2006
The Elk River Wind Power Project is proof that wind farming is profitable. Its sale to the Empire District Electric Company in Kansas is good business because the savings to Empire have shown the value of its investment.

This is big business which provides jobs and a resulting good ripple effect to the economy of the area.

When you water and take care of plants, you see them grow and produce bountifully. When you harvest the wind, especially at a cost less than conventional energy production the benefits include energy self sufficiency and hope for an energy sustainable future. Wind as a resource will not run out.

adrianakau@aol.com
Comment
3 of 10
May 24, 2006
I goofed. 77 days of operation equals 1848 hours of operation to produce 75K MWHours.
The system's output capacity is 150 MW , therefore the load factor is .27, or about 27% of capacity. The system, on average, was producing 40 MW at any given time.
Comment
4 of 10
May 24, 2006
Unless my calculations are wrong (I'm assuming a million bucks per tower) it seems that the cost of errecting the towers per customer (42,000)
comes out around $2400 . That makes wind power awfully cheap.
Comment
5 of 10
May 24, 2006
Wind turbines shut down or possible turnaway from the wind and probably feather their blades the same way a plane's props are feathered
when the wind gets beyond a certain speed.
"500,000 Mwh from 150 Mw works out to a load-factor of 0.41, seems too good to be true?? "
Probably is - I calculate a load factor of .38. You have to remember that Kansas is in the top 5 states in terms of wind capacity. You also have to rememebr that the weather is variable - it may have been avery good year for wind.
Comment
6 of 10
May 24, 2006
I have seen these windmills working outside of Atlantic City New Jersey and I'm impressed! I also saw the wind damage to trees along State highway 68 driving to Morgantown West Va. If wind can knock down trees on these montain ridges I can't imagine how fast these windmills would turn during a wind storm when a cold front moves through. Maybe the energy produced would reduce the need for coal mining in West Va. (Ha ha only kidding W Va.) :-) Seriously, remember the thoughts about airplanes ninety years ago? Same type of people are knocking wind farms today. Personally, I love it!
Comment
7 of 10
the Wind Sail web site has a excel spread sheet http://www.wind-sail.com/docs/AEPallclasses.xls

That allows you to enter wind class, turbine height, efficiencies, etc. and get annual energy production. The spread sheet is preloaded with the wind-sail turbine numbers, but put in the area of the GE turbine (probably 4500 sq m or so, efficiency (40-45 percent?) and wind class and hub height and it will give you an idea as to AEP
Comment
8 of 10
You guys have gone immediately to the bogus way that wind turbines are rated and talked about--the nameplate megawattage. In this case, these are 1.5MW nameplate units--and they really deliver that in "rated" wind, which happens only a fraction of the time. Usuall rated at about 12m/s--26-27 mph. Wind is rated by "class"--these are probably installed in class 5 or better wind--which Kansas has a lot of. Perhaps class 4.

As i figure it, class 5 30M tower-wind blows 12 m/s or more only about 15 percent of the time.

The correct way to rate a turbine is kw-h/yr in specified class of wind.
Comment
9 of 10
May 28, 2006
"That allows you to enter wind class, turbine height, efficiencies, etc. and get annual energy production. "
Wind class is an imprecise characterization,,
resulting in a rather imprecise estimate of output. The figures reported on Elk River are
not estimates, but actual figures and do not depend in any way on nameplate capacities of the turbines. Whether the achieved 3 month results can be extrapolated to provide yearly results that are more precise than estimates based on wind class depends upon how typical the winds during that three month
period actually are. I look upon the usefullnes of wind classes as being rough indicators of how productive a given area will be, not as a metric to provide precise estimates of actual output.
Comment
10 of 10
June 3, 2006
Congratulations!
Such successful projects, grounded with the creative initiatives of inventive peoples are a good illustration for all other countries,much talking, but doing nothing in this sphere.

Sigitas C.
Vilnius.
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