| Business | Phone |
| Calpine Corp 1401 H St Nw # 510, Washington 20005 | (202) 589-0909 |
| Chubu Electric Power Co 900 17th St Nw # 1220, Washington 20006 | (202) 775-1960 |
| Constellation Energy Group 101 Constitution Ave Nw # 908e, Washington 20001 | (202) 942-9840 |
| Electricite De France Intl 1730 Rhode Island Ave Nw # 509, Washington 20036 | (202) 429-2527 |
| Energy East 801 Pennsylvania Ave Nw # 250, Washington 20004 | (202) 783-5521 |
| Exelon Energy 101 Constitution Ave Nw, Washington 20001 | (202) 347-7500 |
| Florida Power & Light Co 801 Pennsylvania Ave Nw # 220, Washington 20004 | (202) 347-7082 |
| National Grid Usa 633 Pennsylvania Ave Nw # 6, Washington 20004 | (202) 783-7959 |
| Pinnacle West Capital Corp 801 Pennsylvania Ave Nw # 214, Washington 20004 | (202) 293-2655 |
| Progress Energy 801 Pennsylvania Ave Nw # 250, Washington 20004 | (202) 783-5560 |
| Public Service Electric & Gas 1 Massachusetts Ave Nw, Washington 20001 | (202) 408-0173 |
| Quiet Power Inc 1201 Pennsylvania Ave Nw, Washington 20004 | (202) 661-4646 |
| Radkowsky Thorium Power Corp 3201 New Mexico Ave Nw, Washington 20016 | (202) 895-1323 |
| Singleton Electric 333 Constitution Ave Nw, Washington 20001 | (202) 289-0389 |
| Southern California Edison Co 555 12th St Nw # 640, Washington 20004 | (202) 393-3075 |
| Southern Co Svc Inc 601 Pennsylvania Ave Nw # 800, Washington 20004 | (202) 261-5000 |
| Tokyo Electric Power Co 1901 L St Nw # 720, Washington 20036 | (202) 457-0790 |
| Wisconsin Electric Power Co 122 C St Nw # 840, Washington 20001 | (202) 662-4340 |