1) CLEARWAY ENERGY GROUP, LLC

1) ADVANCE ILLINOIS

2) ADVANCED ENERGY UNITED AEU

3) ASSURANT, INC.

4) AT T ILLINOIS AND ITS AFFILIATES

5) AUX SABLE LIQUID PRODUCTS, INC.

6) BELLEFAIRE JCB

7) CITGO RENEWABLE ENERGY GROUP

8) CITY OF CHICAGO

9) CLEARWAY ENERGY GROUP, LLC

10) CONSTELLATION ENERGY GENERATION, LLC

11) GENERAL MOTORS LLC

12) GULFSTREAM AEROSPACE CORPORATION

13) ILLINOIS ASSOCIATION OF PRESCRIBING PSYCHOLOGISTS IAPP

14) ILLINOIS ASSOCIATION OF REHABILITATION FACILITIES

15) ILLINOIS LAND TITLE ASSOCIATION

16) ILLINOIS PSYCHOLOGICAL ASSOCIATION

17) JUPITER POWER LLC

18) KEY CAPTURE ENERGY

19) MEIJER, INC.

20) METROPOLITAN PIER EXPOSITION AUTHORITY

21) NEW LEAF ENERGY INC.

22) NICOR GAS

23) NORTHERN TRUST CORPORATION

24) PROGRESSIVE TREATMENT SOLUTIONS LLC

25) REDSPEED ILLINOIS

26) STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANIES

27) TEACH FOR AMERICA

28) TEACH PLUS INC.

29) UNIVERSITY OF CHICAGO MEDICAL CENTER

1) ADVANCE ILLINOIS

2) ADVANCED ENERGY UNITED AEU

3) ASSURANT, INC.

4) AT T ILLINOIS AND ITS AFFILIATES

5) AUX SABLE LIQUID PRODUCTS, INC.

6) BELLEFAIRE JCB

7) CITGO RENEWABLE ENERGY GROUP

8) CITY OF CHICAGO

9) CLEARWAY ENERGY GROUP, LLC

10) CONSTELLATION ENERGY GENERATION, LLC

11) GENERAL MOTORS LLC

12) GULFSTREAM AEROSPACE CORPORATION

13) ILLINOIS ASSOCIATION OF PRESCRIBING PSYCHOLOGISTS IAPP

14) ILLINOIS ASSOCIATION OF REHABILITATION FACILITIES

15) ILLINOIS LAND TITLE ASSOCIATION

16) ILLINOIS PSYCHOLOGICAL ASSOCIATION

17) JUPITER POWER LLC

18) KEY CAPTURE ENERGY

19) MEIJER, INC.

20) METROPOLITAN PIER EXPOSITION AUTHORITY

21) NEW LEAF ENERGY INC.

22) NICOR GAS

23) NORTHERN TRUST CORPORATION

24) PROGRESSIVE TREATMENT SOLUTIONS LLC

25) REDSPEED ILLINOIS

26) STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANIES

27) TEACH FOR AMERICA

28) TEACH PLUS INC.

29) UNIVERSITY OF CHICAGO MEDICAL CENTER