1) AMERICAN CEMENT ASSOCIATION (FORMERLY PORTLAND CEMENT ASSOCIATION)

2) ASSOCIATION OF PLASTIC RECYCLERS

3) CAPITAL POWER OPERATIONS (USA) INC.(FORMERLY KNOWN AS CAPITAL POWER CORPORATION)

4) DT MIDSTREAM, INC.

5) DUKE ENERGY CORPORATION

6) ELECTRICITY CANADA

7) GEVO, INC.

8) HEIDELBERG MATERIALS

9) MARITIME INNOVATION COALITION

10) NATIONAL AUTOMOBILE DEALERS ASSOCIATION

11) REPSOL SERVICES COMPANY

12) SUNGAS RENEWABLES INC

13) THAI UNION GROUP PCL

14) THE COALITION FOR RENEWABLE NATURAL GAS

15) THE TREVOR PROJECT

16) VISTRA ENERGY (FKA ENERGY FUTURE HOLDINGS)