PROGRAM INFORMATION

MEEKER - 6/25/2003 through 9/28/2004

and

MEEKER (Hallandras Ranch)

5/6/2003 through 9/28/2004

DATA DETAILS

June 25, 2003 through September 28, 2004:

The anemometer tower was installed on June 25, 2003. The site was located approximately 3.3 miles north of the town of Rio Blanco and 18 miles southwest of Meeker. The tower was located near the highest point of a ridge that runs north and south. The vegetation was predominately natural grasses and sage brush. Overall, the site had good exposure to the wind in all directions.

All data was collected using an NRG #40 Anemometer and NRG #200 Wind Vane mounted on a tilt-up tower located on the landowner's property at a height of 20m. This equipment fed into an NRG Wind Explorer data logger. All data plugs were sent into the Governor's Energy Office and then to the University of North Dakota for analysis. None of the data plug files were available from UND for this site.

However, the corrected data and UND wind resource summary report are available here:

• UND_Meeker_2003_0625_to_2004_0928.txt
• Meeker_Wind_Resource_Summary_Report_2003_0625_to_2004_0928.pdf

CSU was chosen as the contractor for the program on September 14, 2007. From the UND data, an analysis of the wind resource was developed using Windographer 1.13. For this data, an offset of +98° was already applied by UND to the wind vane data. No data quality analysis was performed for this data other than what was available from the flag data fields included in the data. The suspect data was first removed from the collected data. Windographer was then used to add in synthetic data to these intervals with suspect data. The Windographer files (with blanks for the suspect data and with the blanks filled with synthetic data) are given below:

• UND_Meeker_2003_0625_to_2004_0928_with_blanks.windog
• UND_Meeker_2003_0625_to_2004_0928_with_blanks.txt
• UND_Meeker_2003_0625_to_2004_0928_with_filled_blanks.windog
• UND_Meeker_2003_0625_to_2004_0928_with_filled_blanks.txt

Complete Wind Resource Summary

The anemometer tower was removed from the site on September 28, 2004. Highlights of the wind resource at this site for the entire data collection period using the Windographer 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.

In additional, a smaller 10m anemometer tower was installed nearby at the Halandras Ranch from 5/6/2003 though 9/28/2004. The location details for this site are given below:

Neither the data plug files nor the txt file were available from UND for this site.

However, UND wind resource summary report are available here:

• Meeker_2_Wind_Resource_Summary_Report_2003_0506_to_2004_0928.pdf

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