1) AMEREN

2) AMERICAN CEMENT ASSOCIATION (FORMERLY PORTLAND CEMENT ASSOCIATION)

3) AQUESTIVE THERAPEUTICS

4) AVERY DENNISON CORPORATION

5) CAMECO CORPORATION

6) CEMENT KILN RECYCLING COALITION

7) DUKE ENERGY CORPORATION

8) ELECTRICITY CANADA

9) ENERGY FORWARD

10) GEOTHERMAL EXCHANGE ORGANIZATION (GEO)

11) GEVO, INC.

12) GLOBAL LASER ENRICHMENT LLC

13) HEIDELBERG MATERIALS

14) MARITIME INNOVATION COALITION

15) METHANEX (DBA METHANEX USA LLC, METHANEX LOUISIANA LLC, METHANEX GEISMAR III LLC

16) REPSOL SERVICES COMPANY

17) SALT RIVER PROJECT

18) SOUTHERN COMPANY

19) SUNGAS RENEWABLES INC

20) THE METHANOL INSTITUE

21) VALERO ENERGY CORP

22) VISTRA ENERGY (FKA ENERGY FUTURE HOLDINGS)