| A&N Electric Cooperative | Allegheny Power
System |
| Aqualon Corporation | Baltimore
Gas & Electric |
| Carolina Power & Light | Central VA Electric Cooperative,
Inc. |
| Choptank EMC | Delaware Electric Cooperative, Inc. |
| Conectiv | Duke Energy |
| E. I. DuPont De Nemours | Mecklenburg Electric Cooperative |
| Dominion N.C. Power | Northern VA Electric Cooperative |
| Potomac Electric Power Company | Rappahannock Electric
Cooperative |
| Shenandoah Electric Cooperative | So. Maryland Electric
Cooperative |
| Verizon | Dominion Virginia Power |
| Northern Neck Electric Coop. | Harrison Rural EMC |
| Roanoke Electric Coop. | and many other various
municipalities |
