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All Sites Reviewed 10 MW+, 1998-2001

Project Location Capacity (MW) Riverside County, California 190 Kern County, California 224 Logan County, Colorado 30 Weld County, CO & Laramie County, WI 16 Buena Vista County, Iowa 193 Cerro Gordo County, Iowa 42 Worth County, Iowa 80 Gray County, Kansas 112

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All Sites Reviewed 10 MW+, 1998-2001

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  1. Project Location Capacity (MW) Riverside County, California 190 Kern County, California 224 Logan County, Colorado 30 Weld County, CO & Laramie County, WI 16 Buena Vista County, Iowa 193 Cerro Gordo County, Iowa 42 Worth County, Iowa 80 Gray County, Kansas 112 Lincoln County, Minnesota 262 Pipestone County, Minnesota 10 Madison County, New York 42 Gilliam County, Oregon 25 Umatilla County, Oregon 109 Wasco County, Oregon 24 All Sites Reviewed 10 MW+, 1998-2001

  2. Project Location Capacity (MW) Fayette County, Pennsylvania 15 Somerset County, Pennsylvania 10 Culberson County, Texas 30 Howard County, Texas 28 Upton County, Texas 350 Pecos County, Texas 402 Taylor County, Texas 150 Carson County, Texas 80 Walla Walla County, Washington 180 Iowa County, Wisconsin 30 Kewaunee County, Wisconsin 11 Carbon County, Wyoming 133 Bennington County, Vermont 6 All Sites ReviewedContinued

  3. View Shed and Comparable • View Shed defined as properties within a 5 mile radius of wind farm • Comparable community selected through • Assessor Interviews • Demographic Data from U.S. Census

  4. Sales Data Used for Analysis

  5. Property Sale Price by Sale DateSample:Buena Vista, Iowa 1996-2002

  6. Property Sale Price by Sale MonthSample:Buena Vista, Iowa 1996-2002

  7. Property Sale Price: 6-Month Trailing Average Sample:Buena Vista, Iowa 1996-2002

  8. Simple Linear Regression on Sale PriceSample:Buena Vista, Iowa 1996-2002

  9. 3 Case Studies • Case I View Shed vs. Comparable—All Years • Case II View Shed Only—Before vs. After On-Line Date • Case III View Shed vs. Comparable—After On-Line Date

  10. Regression ResultsCase I Summary

  11. Regression ResultsCase I Summary (continued)

  12. Three Cases Summarized • Case I—In 8 out of 10 cases, view shed property values grew faster than the comparable. • Case II—In 9 out of 10 cases, view shed property values grew faster after the on-line date. • Case III—In 9 out of 10 cases, view shed property values grew faster after the online date than the comparable.

  13. Sample Site ReportBuena Vista County, Iowa 750 kW Zond wind turbines 1.5 miles east of Alta, Iowa Source: NREL--PIX number 11513. Credit: Waverly Light and Power

  14. Buena Vista, Iowa Project Location

  15. Comparable SelectionBuena Vista County, Iowa • Demographics from U.S. Census 1990, 2000 • Buena Vista County Assessor Interviews • Spencer City and adjacent townships in Clay County (to the north) as used comparable to Storm Lake area. • Comparable has higher property values due to proximity to recreational lakes. However, the two areas’ property values have risen at similar rates. • Similar predominate business mix, productive value of Clay County land may be slightly higher.

  16. Comparable Selection: DemographicsBuena Vista County, Iowa

  17. Regression ResultsBuena Vista County, Iowa, 1996-2002

  18. Additional DetailsBuena Vista County, Iowa According to the Buena Vista County Assessor • 100 percent of Alta City properties have views of turbines • 75 percent of Nokomis Township properties have views of turbines • 5-10 percent of Storm Lake City properties have views of turbines • All waterfront properties on the southeast side of Storm Lake can see turbines when looking northwest Two cases analyzed a) Viewshed without Storm Lake City b) Viewshed with Storm Lake City • Storm Lake City has a population of approximately 10,000, while Nokomis Township and Alta City have a combined population of approximately 2,000

  19. Summary • Statistics do not support claim of negative property value impacts from wind farms. • Property database is complete through 2002. • But, to maintain credibility database should a) be continually updated, and b) additional analysis performed.

  20. Contact Information • Hardcopies of “The Effect of Wind Development on Local Property Values” are available from REPP for a nominal fee. • A pdf version can be downloaded for free from the REPP website • For more information see www.repp.org/wind

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