PROGRAM INFORMATION

VICTOR/GUYOT - 9/14/2007 through 9/8/2008

DATA DETAILS

September 14, 2007 through September 8, 2008:

The anemometer tower was installed on September 14, 2007 on the property of the AngloGold Ashanti (Colorado) Corp.'s Cripple Creek & Victor gold mine. The tower is located at a height of about 45 feet at the top of a weather station on a hill overlooking the town of Cripple Creek. All data was collected by Anglogold Ashanti personnel using an NRG #40 Anemometer and NRG #200P Wind Vane. This equipment fed into an NRG Wind Explorer data logger. The data plug files were received by CSU for analysis. The data plug files and text versions of these files are given below.

It is important to note that these are the raw files without any compensation for offset. It is also important to note that the temperature was not recorded during this period.

From this data, an analysis of the wind resource was developed using Windographer 1.21 for the period from September 14, 2007 through September 8, 2008. For this data, an offset of +36 degrees was applied to the wind vane data. A data validation was also performed on the data. This data was filtered two ways:

1. Any wind speed data where the wind speed was less than 1 mph for 3 hours or more was deleted.
2. Any wind direction data where the wind direction varied by less than 5 degrees over 6 hours was deleted

Windographer was then used to add in synthetic data to these intervals with suspect data. The Windographer files (with and without data validation) and the combined data files (with and without data validation) are given below:

• Guyot_2007_0914_to_2008_0908_without_data_validation.windog
• Guyot_2007_0914_to_2008_0908_without_data_validation.txt
• Guyot_2007_0914_to_2008_0908_with_data_validation_offset_36.windog
• Guyot_2007_0914_to_2008_0908_with_data_validation_offset_36.txt

Current Wind Resource Summary

Highlights of the wind resource at this site through the most recent data ending on September 8, 2008 are shown below:

Windographer was used to match up the wind at this site with the performance curves of some common turbines of various sizes and various heights, allowing for losses of about 13%. The table below shows the results. For the larger turbines, the tower height was increased to account for the larger turbine blades - the wind resource was extrapolated to these higher heights. Keep in mind that the larger and the higher the turbine, the better the wind and the greater the output. But of course, as the tower heights and turbine sizes increase so does the cost.

For more information Contact Us!