1) BECHTEL NATIONAL, INC.

2) BIA-ENERGY OPERATING COMPANY LLC

3) EDISON CHOUEST OFFSHORE

4) ENBRIDGE (U.S.) INC. (FORMERLY SPECTRA ENERGY)

5) ENERGY TRANSFER PARTNERS

6) ENTERGY SERVICES LLC

7) FEDERATION OF ELECTRIC POWER COMPANIES OF JAPAN

8) NUCLEAR ENERGY INSTITUTE

9) PINNACLE WEST CAPITAL CORPORATION

10) S&B FAMILY OF COMPANIES

11) T-MOBILE

12) TALEN ENERGY

13) VALERO ENERGY

14) X-ENERGY, LLC