1) 3 Elements Group, SA

2) Air Products and Chemicals, Inc.

3) Alcoa USA Corp.

4) American Association of Professional Landmen

5) Arkansas Electric Cooperatives, Inc.

6) Bayer U.S. LLC

7) BLUEBONNET ELECTRIC COOPERATIVE, INC.

8) Brazos River Authority

9) CDM Smith Inc.

10) Celanese International Corporation

11) Chisholm Trail Disposal, LLC

12) Cielo Wind Power LLC

13) City of Abilene

14) Covestro LLC

15) Cowboy Aggregates, LLC

16) Daikin Comfort Technologies North America

17) Eastman Chemical - Texas Operations

18) EdgeCloudLink, Inc.

19) El Paso and Hudspeth Counties Regional Water Supply Corporation

20) El Paso Water

21) Flint Hills Resources, LLC

22) Foster, Paul

23) Frontier Waste Solutions

24) Georgia-Pacific LLC

25) GEXA Energy

26) Green Group Holdings, LLC

27) Guadalupe-Blanco River Authority

28) Guardian Industries Holdings, LLC

29) Infor(US), LLC

30) INV Nylon Chemicals Americas, LLC

31) Koch Ag & Energy Solutions, LLC

32) Koch Engineered Solutions, LLC

33) Koch Supply & Trading, LP

34) Lone Star Transmission LLC

35) Lubbock Power and Light

36) New Braunfels Utilities

37) NextEra Energy Inc.

38) NextEra Energy Resources LLC

39) North Texas Municipal Water District

40) PCII, LLC

41) Phillips Infrastructure Corporation

42) Sky Global Partners, LLC

43) SL ENERGY POWER PLANT I, LLC

44) SLR Property I, LP

45) Southern Spirit Transmission, LLC C/O Pattern Energy Group, LP

46) Summit Next Gen, LLC

47) Syngenta Corporation

48) Trellis Company and Subsidiaries

49) Waste Control Specialist, LLC