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) ISO NEW ENGLAND

9) NUCLEAR ENERGY INSTITUTE

10) PINNACLE WEST CAPITAL CORPORATION

11) S&B FAMILY OF COMPANIES

12) TALEN ENERGY

13) VALERO ENERGY

14) X-ENERGY, LLC