RES Americas Kansas Wind and Renewable Energy Conference 2008

1. RES Americas Kansas Wind and Renewable Energy Conference 2008

2. RES Americas Inc • Organization • RES Americas is primarily a leading Wind Energy Company but is moving into other renewable fields • Established Broomfield, CO office as Corporate Headquarters • Development • Technical, Resource Assessment • Construction

3. History of RES Americas • The RES Group has a long history in wind technology development • RES Americas takes projects from conception - leasing land, acquiring transmission rights and setting up Power Contracts with Utilities • RES Americas is currently constructing approximately 1,400 MW, representing more than 30% of the wind capacity currently under construction in the U.S. and will have constructed approximately 3,500MW by the end of 2008. 1981 1992 1999 2001 2006 2008 • Renewable Energy Systems Limited founded by Sir Robert McAlpine • RES constructs its first project • RES Americas constructs its first U.S. project • RES Americas co-developed and constructed the 278 MW King Mountain Wind Ranch, the largest wind project in the world at the time it was constructed • RES Americas’ U.S. construction surpasses 1,000 MW • RES Americas began developing projects for ownership • RES Americas’ U.S. construction surpasses 3,000 MW • Commercial operations of RES Americas’ first owned project, Whirlwind, in the U.S.

4. Wind Power Industry Overview Renewable energy is expected to capture a significant portion of the electricity sector • Between 2007 and 2030, electricity demand in the U.S. and Canada is expected to increase approximately 30% • Significant portion will be met with renewables • Wind expected to represent 7% of U.S. capacity by 2015 • Cumulative capacity of 57,000 MW by 2015 • RES currently has over 600 MW in various stages of development in Kansas Wind energy is the future of renewable power generation Wind energy incentives • PTCs • Accelerated tax depreciation • State / provincial policies and wind energy incentives • Renewable Portfolio Standards (“RPS”) Greenhouse gas considerations • Focus on greenhouse gas emissions in both the U.S. and Canada has further prompted the growth in renewable generation • Through 2012, natural gas prices are forecast to remain in the $8-$12/mmbtu range, keeping wind cost-competitive with gas-fired electricity generation in many state electricity markets Increasing cost of traditional fuels

5. North American Wind Opportunity North American Installed Wind Capacity Growth (in MW) Source: EER, Nov 2007.

6. Emerging Renewables • RES is using wind power expertise to develop and construct projects that generate power using solar thermal, solar PV, and biomass • Also interested in energy storage, though this is still a developing field. • Focused on utility-scale, grid-connected projects. • RES is leveraging existing land positions, interconnection agreements, and relationships with utilities Solar PV can generate power almost anywhere – but it’s still expensive Ausra CLFR Solar thermal is less expensive – but requires the direct sunlight found in the Southwest US

7. RES Americas Inc • Construction • U.S. Business • Constructed - 20 Projects in US = 2,060 MW; 1999 – 2007 • Under Construction - 12 Projects = 1,480 MW • Construction Activities • Wind Farm Design • Civil and Electrical Design • Procurement • Civil, Electrical, Mechanical Construction • Construction Management • Turbine Procurement

8. Central Plains Wind Farm

9. Central Plains Wind Farm – The Beginning • The project was originally scheduled to be constructed in 2003 and then 2004 • Resurrected as Central Plains Wind Farm. • Construction began in April, 2008 • Wichita Economic Development, Inc. • Wheatland Electric Coop • Sunflower Electric Power Corp. • Local source for road base material • Kansas civil contractor for roads construction • Kansas contractor to construct O&M Building

10. Central Plains Wind Farm - Roads • Oakley, KS roads contractor • 6.7 miles of roads, 20 foot wide with 8 foot shoulders • Roads built from crushed base material over a Geotextile fabric • Roads completed in July • Extensive testing on sub-grade and road base. • Shoulders are tested for bearing capacity • Crane pads designed and tested for the specific loads encountered during lifts.

11. Central Plains Wind Farm - Foundations • 55 foot octagonal spread foot • 11 foot total height • Approximately 410 cubic yards of concrete per foundation • Approximately 80,000 pounds of rebar per foundation • Total foundation weight is over 1,600,000 pounds • Foundations are designed internally • Design is specific to turbine and site conditions

12. Central Plains Wind Farm - Electrical • Power is transmitted from the turbines to the substation at 34,500 volts • Over 19 miles of underground cable • All turbines, substation and O&M building connected by fiber optics • Collection system nearing completion • Substation transformer steps up the 34,500 volts to 115,000 volts for connection to the transmission line • Metering and system protection take place in the project substation • Substation scheduled for to be energized on October 20th

13. Central Plains Wind Farm - Turbines • Vestas V90, 3 Megawatt turbines • Tower is 80 meters, 262 feet, tall and weighs over 370, 000 pounds • Each blade is 44 meters, 144 feet, long and weighs over 14,000 pounds • The nacelle and hub weigh over 175,000 pounds • Total weight of turbine is approximately 600,000 pounds • Wind farm will produce enough power for approximately 35,000 homes

14. Central Plains Wind Farm - Turbines • The crane used will have a track length of 38 feet, width of 34 feet and a boom height of 320 feet • The assembled crane will weigh about 1.2 million pounds • The crane will be transported to the site on over 20 tractor trailers. • The major components will be shipped from the port to Kansas by rail • First tower section will be erected by the second week in October. • The blades will be installed one at a time, single blade erection • First turbine will be completely erected by the end of October • Project will reach Substantial Completion before the end of December

15. RES Americas