1. RES Americas Kansas Wind and Renewable Energy Conference 2008

2. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 1 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 2 History of RES Americas 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. RES constructs its first project Renewable Energy Systems Limited founded by Sir Robert McAlpine RES Americas constructs its first U.S. project 19811992199920062008 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. 2001 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

4. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 3 Wind Power Industry Overview 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 PTCs Accelerated tax depreciation State / provincial policies and wind energy incentives −Renewable Portfolio Standards (“RPS”) Renewable energy is expected to capture a significant portion of the electricity sector Wind energy incentives 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 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 Focus on greenhouse gas emissions in both the U.S. and Canada has further prompted the growth in renewable generation Greenhouse gas considerations

5. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 4 North American Wind Opportunity North American Installed Wind Capacity Growth Source:EER, Nov 2007. (in MW)

6. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 5 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 Solar thermal is less expensive – but requires the direct sunlight found in the Southwest US Ausra CLFR

7. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 6 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 7 Central Plains Wind Farm Size:99 MW Location:Wichita County, Kansas Developer:RES Americas Ownership:Westar Contract Type:EPC Construction Start:April 2008 Substantial Completion:December 2008 Turbine Technology:33 Vestas V90 3.0 MW Interconnection Voltage:115 kV Total Length of New Road:7 miles Total Length of Collector System: 19 miles

9. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 8 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 9 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 10 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 11 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 12 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 13 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. DO NOT DELETE!! – FOR PRESTECH USE ONLY – \RD PRES TECH\Jobs\IBD Client\ECCC\XCHRME\Chang, Fei\RES Custom PPT\ 14 RES Americas