1. Analysis of Wind Speed Data for Determining Wind Energy Potential in Billings, MT
and Huron, SD
By Keaton Belli
EAS 4803

2. Questions How suited is the US for wind energy?
How constant are the winds in the US?
Are there any long term cycles in wind speed?
How do these cycles affect wind energy output?
Let’s find out…

3. Data

4. Autospectral Analysis

5. Butterworth Filter of Billings, MT

6. Butterworth Filter of Huron, SD

7. Powercurve for GE900

8. Closer Look at 1yr Periodicity of Billings, MT

9. What does this mean?

10. Results For Yearly Wind Cycle
Average power output during a “trough” is about 426kW
Average power output with average wind speed over the same time is about 496kW
Average power output during a “peak” is about 572kW
Δlow = -70kW
Δhigh = 76kW
Not a large difference in power output for a yearly wind cycle
Inconclusive for a 5 year periodicity due to amount of data and filtering