1) AMERICAN FAMILY LIFE ASSURANCE COMPANY (AFLAC)

2) CATF ACTION, INC.

3) CHOOSE CHICAGO

4) DACRA TECH, LLC

5) ENERGY TRANSFER

6) ERNST & YOUNG LLP

7) FORD MOTOR COMPANY

8) GREAT AMERICA LLC

9) ILLINOIS AMERICAN WATER COMPANY

10) ILLINOIS BIOTECHNOLOGY INNOVATION ORGANIZATION

11) ILLINOIS BROADBAND & CABLE ASSOCIATION

12) ILLINOIS MECHANICAL & SPECIALTY CONTRACTORS ASSOCIATION (IMSCA)

13) PRAIRIE POWER, INC.

14) SOUTHERN ILLINOIS HEALTH CARE FOUNDATION, INC.

15) SOUTHERN ILLINOIS POWER COOPERATIVE

16) TOUCHETTE REGIONAL HOSPITAL

17) WABASH VALLEY POWER ALLIANCE

18) WASTE MANAGEMENT OF ILLINOIS INC.