2. Desert Sky Wind Power Project June 2002 Welcome Desert Sky Wind Project

3. Desert Sky Wind Power Project June 2002 Wind Power’s Place  Important part of mix  Free fuel  No emissions management  Maturing technology  Cost competitive  Predictable at proven sites  Low risk at proven sites  Germany #1, U.S. #2  Fastest growing source  Future looks bright

4. Desert Sky Wind Power Project June 2002 Wind Growth 2001  1,700 MW in U.S. 2001  16 states, Texas leads  900 MW in Texas 2001  More in Texas than entire country in previous years  U.S. installed capacity total 4,258 MW, 26 states

5. Desert Sky Wind Power Project June 2002 US Wind Projects

6. Desert Sky Wind Power Project June 2002 Wind Industry Drivers  Low cost  PTC, 1.7 cents per KWH  Texas SB 7  Becoming “mainstream”  Rural development  Skilled workforce  Good remote locations  Transmission network

7. Desert Sky Wind Power Project June 2002 Declining Cost of Wind $’s Per MWH

8. Desert Sky Wind Power Project June 2002 Wind Site Considerations  Willing landowners and public  Windy site  1-5 years of data  mesa  few trees  Lots of land -- rural  Environmental studies  Endangered species  Avoid bird flyways  Archaeology studies  Transmission network

9. Desert Sky Wind Power Project June 2002 U.S. Wind Resources

10. Desert Sky Wind Power Project June 2002 Wind Energy Potential In Billions of KWH

11. Desert Sky Wind Power Project June 2002 Desert Sky Wind Project GE Wind Energy built and O&M CPS buying power AEP owns

12. Desert Sky Wind Power Project June 2002 Desert Sky Details  AEP $175 Million investment  107 turbines, GE Wind 1.5 MW  GE Wind Energy O&M  CPS buys power long-term  Remote and rural  Indian Mesa  Pecos County  Iraan, Texas  Project Covers 15 Square Miles

13. Desert Sky Wind Power Project June 2002 GE Wind Energy 1.5 Operation GE Wind Energy 1.5 Operation  Operates in 8-56 MPH wind  Onboard weather station  Electronically controlled  Each turbine self-contained  Desert Sky a 107 unit plant  Yaw control facing wind  Variable speed via blade pitch  Operates at 11-20 RPM

14. Desert Sky Wind Power Project June 2002 Tower & Turbine Profile  328’ base to blade  Each blade 112’  Span greater than 747  163.3 tons total  Foundation 20’ deep  Rated at 1.5 megawatt  Supply at least 350 homes

15. Desert Sky Wind Power Project June 2002 Wide Sweep 231 ft. 211 ft.  GE Wind Energy  1.5 MW turbines  231 ft. blade tip to tip

16. Desert Sky Wind Power Project June 2002 Wind Turbine Units Nacelle 56 tons Tower 3 sections Workers Blade 112’ long

17. Desert Sky Wind Power Project June 2002 Nacelle  Nacelle (nuh-cell)  Houses generator and gearbox  Resembles large travel trailer  Weighs 56 tons

18. Desert Sky Wind Power Project June 2002 Inside Nacelle

19. Desert Sky Wind Power Project June 2002 Desert Sky Map  Dallas, 400 Miles  San Antonio, 266 Miles  Odessa, 90 Miles  Ft. Stockton, 50 miles  McCamey, 20 Miles  Iraan, 12 Miles Desert Sky

20. Desert Sky Wind Power Project June 2002 More Information  AWEA.ORG  American Wind Energy Association  AEP.COM  AEP’s web  CITYPUBLICSERVICE.COM  City Public Service  GEWIND.COM  Enron Wind  DESERTSKYWIND.COM  Desert Sky Wind

21. Desert Sky Wind Power Project June 2002 Thank You!