1. American Public Power Association The Challenge of Building a Coal Plant in Today’s Environment Raj Rao President, Indiana Municipal Power Agency Chairman, Prairie State Generating Company

2. Page 1 Campus Overview Site Area: 700+ Acres Coal Fuel: Adjacent New Mine Water Supply & Discharge: From the Kaskaskia River – 14 miles from the Site Waste Disposal: Rail Transport to Offsite Disposal Area and Limestone Delivery Transmission: Interconnect with Local Utility – Ameren  2 – 345 kV “Short” Lines at the Site  1 – 345 kV “Long Line” across the Mississippi River  Other Transmission Upgrade Projects Base Target Completion Dates:  Unit 1 – August 2011  Unit 2 – May 2012

3. 2 Prairie State Owners Serve More Than 2.5 Million People In Nine States AMP-Ohio 368 MW Indiana Municipal Power 200 MW Missouri Joint Municipal Electric Utility Commission 195 MW Prairie Power, Inc. 130 MW Illinois Municipal Electric 240 MW Southern Illinois Power Cooperative 125 MW Northern Illinois Municipal Power Agency 120 MW Kentucky Municipal Power 124 MW Page 2

4. Page 3 American Public Power Association Prairie State Energy Campus Challenge of Building a Coal Plant in Today’s Environment Site Selection Environmental Permits Partners & Financing EPC Contractor Page 3

5. Page 4 American Public Power Association Prairie State Energy Campus Challenge of Building a Coal Plant in Today’s Environment Procurement Construction Safety, Cost and Schedule Staffing Page 4

6. Page 5 American Public Power Association Prairie State Energy Campus Challenge of Building a Coal Plant in Today’s Environment Construction – Bechtel EPC-M – Peabody-Mine – PSGC Staff Operations – Experienced Operator vs. Experienced Staff (Hire) Page 5

7. Page 6 Coal Mine Overview  Project participants own 200 Million tons of coal (recoverable) for a dedicated source of fuel for the project – Mineral rights to coal are owned – Reserves located adjacent to the plant to the East, West and North of the project – Adequate to supply project for 30 years at approximately 6.5 Million tons per year – Using continuous mining technology American Public Power Association Prairie State Energy Campus Challenge of Building a Coal Plant in Today’s Environment

8. Page 7 Slope Basin Stockpile Future Office In the Beginning: Page 7

9. Page 8 Aerial of the Mine Slope 8 Page 8

10. Page 9 Mine Slope – at Brow Page 9

11. 10 Power Plant Overview October 2007 Page 10

12. 11 19 Months Later First Unit 2 Structural Steel Page 11

13. Major Safety Milestone Page 12

14. Power Plant Overview  2 x 800 MW Net Supercritical Units  Babcock & Wilcox Pulverized Coal Boilers  Toshiba Steam Turbine Generators  Siemens/Wheelabrator Air Quality Control System  Balance of Plant with:  Cooling Towers  Water Treatment Plant  Single Shell, Dual Flue Chimney  14 mile Raw Water Pipeline  4 mile Railroad  General Contractor – Bechtel Power Corporation First Concrete Feb. 2008 Completed Unit 1 Boiler Steel March 2009 Page 13

15. Page 14 Construction - Project Quantities Concrete – approx. 165,000 cubic yards, enough concrete to fill more than 50 Olympic-sized swimming pools Structural and Miscellaneous Steel – approx. 42,000 tons, about half of the steel tonnage of Sears Tower Pipe (A/G and U/G) – approx. 120 miles, enough pipe to stretch from Lively Grove, IL to Springfield, IL Scheduled Cable – approx. 1,200 miles, enough cable to stretch from St. Louis, MO to El Paso, TX Unit 1 Turbine Pedestal & Boiler

16. 15 Biggest Construction Project in the Country! Page 15

17. PSGC Community Outreach Prairie State Project Poker Run Sunday, October 5, 2008 137 individuals participated in this PSGC sponsored event Raising $6,000 for the youth of Tilden Page 16