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Performance of TVA's Buffalo Mountain Wind Power Plant

The Bottom Line

July 10, 2003

For data recently released by TVA, through April 30, 2003

Capacity Factor versus Time
The figure above and table below summarize the plant's historical electricity production, based on the recently released update from TVA.

As of a few minutes ago, the Generation data on the TVA web page referenced above had not actually been updated, but the associated PDF newsletter had been; I can only assume that data in the PDF file is correct, but the web page clearly is not (yet). I did send TVA a couple notes informing them of their error.

As always, TVA still refuses to provide timely or detailed information regarding the performance of their wind power plant, even when requested under the Freedom of Information Act.

TVA's latest newsletter also celebrates Staples and BP Oil company participating in "Green" power purchase programs. In other news, prices of their products will increase slightly.

For the first time in over 2 years, TVA has finally released data for the same ending date as a previous year, so an accurate statement of annual production is finally possible. On the other hand, the previous year's comparable seasonal time period was for two months, and this year's time period is for 3 months, so seasonal comparison remains difficult.

Annual energy production from April 30, 2002 to April 30, 2003 was 3.74 million kilowatt hours. Compare this production with TVA's original announced, annual goal (pre-operations) of 6 million kilowatt hours, and TVA's announced revised annual goal (2002) of 4.6 million kilowatt hours. They need to achieve 27% capacity factor to meet the revised goal. The last two quarters met or slightly exceeded that goal; however, the previous six months were far below the goal. The resulting annual average capacity factor was 22%.


Date
Actual
Total
Production
Million
Kilowatt
hours
Theoretical
Capacity
Million
Kilowatt
hours

Lifetime
Capacity
Factor
%
Capacity
Factor
For
Period
%
Days
Since
Start
November 1, 2000 - "Operational Date"
(Actual Start of Operations - Oct. 12)
0
0
n/a
n/a
0
March 31, 2001
1.2
7.2
16
16
151
June 30, 2001
2.1
11.5
19
22
242
September 30, 2001
2.6
15.9
16
9
334
December 31, 2001
3.9
20.2
19
30
426
February 28, 2002
4.8
23.0
21
33
485
April 30, 2002  
5.8
25.9
22
33
546
July 31, 2002  
6.4
30.3
21
16
638
October 31, 2002  
7.0
34.7
20
13
730
January 31, 2003
8.3
39.1
21
30
822
April 30, 2003
9.5
43.3
22
27
911

Previous Bottom Line Reports:
April 2003
December 2002
October 2002
June 2002
April 2002
March 2002
January 2002
November 2001

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Disclaimer Fine Print: This site is personal, and is independent of TVA or any other organization. Use of the abbreviation "TVA" is purely for descriptive purposes (for example, to distinguish from wind power plants on Buffalo Ridge in Minnesota). No endorsement, no approval, and no involvement by TVA is implied.

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