Kansas Renewable Energy & Efficiency Conference ‘07

Smoky Hills Phase I Wind Project Update

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TradeWind An Experienced Power Team

Founded 2001

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Lenexa, Kansas Based

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Senior managers have 60+ years Utility and IPP experience

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Directly managed - 5,300 MWs valued at over $5 Billion

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2,300 MWs of wind development in central USA

Owned by local investors and Enel S.p.A.

TWE/Enel Leaders in Renewable Power Development

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TWE Form’s Strategic Alliance with Enel - 2006 Enel S.p.A. is Italy’s Largest Electric Utility

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$65 billion market capitalization

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$51+ billion revenue

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Over 53,000+ MW’s of electric generation worldwide

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19,000 + MW’s of renewable electric generation Enel will invest $ 6 billion in renewable energy worldwide

Smoky Hills – Centrally Located

Smoky Hills Development Highlights

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1 st Met tower – June 2003 Land leasing - 24+ months Public meetings - multiple meetings ‘03 through ‘06 Environmental evaluation Power contracting – 2006 Turbine selection – 3Q ‘06 BOP selection – 3Q ‘06 Start of construction 2Q ‘07

Environmental Due Diligence

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TWE conducted the environmental work on this project with the assistance of the following groups and contractors:

– – – TRC Mariah, Inc.

Burns & McDonnell, Inc.

Chatman & Associates, Inc.

United States Fish and Wildlife Service Kansas Department of Wildlife and Parks Kansas Department of Health and Environment United States Corps of Engineers Lincoln County, Kansas – Ellsworth County, Kansas

Environmental & Archeological

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Environmental Studies conducted for the project:

– Threatened and Endangered Species review and Critical Habitat Delineation (2005) – – – Raptor nest inventories (2005 and 2007) Prairie Chicken Lek and population counts (2005, 2006, and 2007) Wetland inventory mapping – – – Migratory corridor review Cultural resources review Paleontological Resources review

Smoky Hills Site

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250 MW site

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Phased construction

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230 kV system

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22,000+ acres

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40 leases

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I-70 good access for construction

Smoky Hills Project Construction Phase I-100.8 MW Smoky Hills Phase I Schedule I. Start – April 2007 II. Turbine erection – August 2007 III. Substation Complete – November 2007 IV. Commissioning & COD-December 2007

Vestas – V80 1.8 MW Turbines 56 Vestas V 80 1.8 MW Turbines Tower – 78 m / 13.5 ft diam Blade – 80 m diam.

Tower – 197 tons Nacelle & rotor – 104 tons

Turbine erection by Vestas

M.A. Mortenson – Balance of Plant MAM a leader in USA wind power construction Access Roads – 22 miles Underground cable – 22.5 miles Overhead line - 7 miles

Foundation Excavation ~ 15 feet deep

Rebar & Tower Bolt – 60+ Tons

Foundation Pour – 490 cubic yards

Foundation w/o Pedestal Pour

Kannapolis Rail Yard

Site Lay Down & Staging Yard

Tower Delivery – Area 2

Setting Tower Base Section

Setting Second Tower Section

Setting 1st Nacelle – September 21 st

Blade Delivery ~ 131 feet

Avoided Emissions & Energy Production Smoky Hills Phase I Eliminates ~ 203,000 tons CO2/ year ~ 665 tons S02/year ~ 455 tons NOx/ year Energy supply equivalent to ~35,000 homes

Smoky Hills Energy Supply Customers Over 235,000 customers will benefit from Smoky Hills renewable energy Phase I Power Purchasers Include : Sunflower Electric – Hays, KS Board of Public Utilities – Kansas City, KS Midwest Energy – Hays, KS

All Phase I energy will be consumed in Kansas

Economic Development Benefits Smoky Hills will bring significant economic benefit to central Kansas Over 150 construction jobs – at peak $14 million in local spending during construction Over $ 16 million to county government & local land owners Over $ 8 million in salary & benefits for operations staff