Welcome Desert Sky Wind Farm Pecos County Texas

Welcome Desert Sky Wind Farm Pecos County, Texas January 2004 Desert Sky Wind Farm

Wind Power’s Place q Important part of mix § Free fuel § No emissions management q Maturing technology q Cost competitive § Predictable at proven sites § Low risk at proven sites q Fastest growing source q Future looks bright January 2004 Desert Sky Wind Farm

Wind Growth in U. S. , Texas q 1, 687 Megawatts (MW) added in 2003 § 204 MW in Texas q 410 MW added in 2002 q 1, 696 MW added in 2001 § 915 MW in Texas q 28% average annual expansion in U. S. capacity over the last five years q Total installed capacity: § U. S. - 6, 374 MW in 32 states § Texas – 1, 293 MW § Texas ranks 2 nd in U. S. January 2004 Source: American Wind Energy Association Desert Sky Wind Farm

Wind Industry Drivers q Competitive cost q Long-term price stability q Environmental attributes q Federal wind tax credit equaling 1. 7 cents per KWH q Texas Senate Bill 7 (electric industry restructuring) q Rural development q Ease of permitting January 2004 Desert Sky Wind Farm

Senate Bill 7 Details q Senate Bill 7 (1999 electric restructuring legislation) included renewable portfolio standard (RPS) q Requires additional 2, 000 megawatts (MW) of capacity in state of Texas by Jan. 1, 2009 (beyond 880 MW installed at the time) q Under SB 7, cumulative installed renewable capacity in Texas must grow to: § § 1, 280 MW (an additional 400 MW) by Jan. 1, 2003 1, 730 MW (an additional 450 MW) by Jan. 1, 2005 2, 280 MW (an additional 550 MW) by Jan. 1, 2007 2, 880 MW (an additional 600 MW) by Jan. 1, 2009 q 2, 880 MW equates to about 3% of TX electricity in 2009 q Installed wind capacity in TX as of Jan. 1, 2004 was 1, 293 MW January 2004 Desert Sky Wind Farm

Texas Wind Projects vs. Load Centers Dallas. Ft. Worth Austin San Antonio Houston Corpus Christi Rio Grande Valley January 2004 Desert Sky Wind Farm

Wind Energy Potential In Billions of KWH January 2004 Desert Sky Wind Farm

Declining Cost of Wind $’s Per MWH January 2004 Does not include Federal wind tax credit; reduces cost 1 cent / k. Wh or $10 / m. Wh Desert Sky Wind Farm

Utility Interest in Wind Energy q Rapidly declining cost q Rapidly growing industry q Adds to fuel source diversity q Environmental benefits q High levels of public support q Legislative or regulatory mandates q Abundant resources in U. S. January 2004 Desert Sky Wind Farm

Wind Site Considerations q Willing landowners and public q Windy site § 1 -5 years of data § Mesa § Few trees q Lots of land -- rural q Environmental studies § Endangered species § Avoid bird flyways q Archaeology studies q Transmission network January 2004 Desert Sky Wind Farm

Desert Sky Wind Farm AEP owns facility CPS buying power GE Wind Energy built project; performs O&M January 2004 Desert Sky Wind Farm

Desert Sky Details q 160 megawatts – 107 turbines at 1. 5 MW each q Located on Indian Mesa near Iraan and Bakersfield, TX q Project covers 15 sq. miles q Enron Wind (now GE Wind Energy) developed and constructed the project; now performing O&M q AEP purchased project after completion in 2001 -- $175 million investment q Power is sold to City Public Service of San Antonio under long-term power supply agreements January 2004 Desert Sky Wind Farm

GE Wind Energy 1. 5 -- Operation q Operates in 8 -56 MPH wind q Onboard weather station q Electronically controlled q Yaw control facing wind q Variable speed via blade pitch q Operates at 11 -20 RPM q Desert Sky a 107 -unit power plant (each turbine is self-contained unit) January 2004 Desert Sky Wind Farm

Tower and Turbine Profile q GE Wind Energy 1. 5 turbines q Each rated at 1. 5 megawatts (1, 500 kilowatts) q 328 ft. base to blade tip q Foundation 18 to 26 ft. deep q Tower in three sections q 163. 3 tons total January 2004 Desert Sky Wind Farm

Wide Sweep of Turbine Blades 231 ft. q Each blade 112 ft. long q 231 ft. blade tip to tip q Span greater than 747 airliner 211 ft. January 2004 Desert Sky Wind Farm

Wind Turbine Units Workers Blade 112’ long Nacelle 56 tons Tower 3 sections January 2004 Desert Sky Wind Farm

Nacelle q Nacelle (nuh-cell) shown before assembly q Houses generator and gearbox q Resembles large travel trailer q Weighs 56 tons January 2004 Desert Sky Wind Farm

Inside Nacelle January 2004 Desert Sky Wind Farm

Desert Sky Map q Dallas, 400 Miles q San Antonio, 266 Miles q Odessa, 90 Miles q Ft. Stockton, 50 miles q Mc. Camey, 20 Miles q Iraan, 12 Miles January 2004 Desert Sky Wind Farm

More Information q AWEA. ORG § American Wind Energy Association q AEP. COM § American Electric Power q CITYPUBLICSERVICE. COM § City Public Service, San Antonio q GEWIND. COM § GE Wind Energy q DESERTSKYWIND. COM § Desert Sky Wind Farm January 2004 Desert Sky Wind Farm

Thank You! January 2004 Desert Sky Wind Farm