Allegheny Power.
Arizona Public Services.
Duke Solutions.
Eastern Municipal Water District.
Georgia Power Company.
Magma Power Corporation.
Mississippi Power Company.
Northwestern Public Service.
Pinnacle West.
PRECorp.
Public Service Electric & Gas, Newark, NJ.
San Diego County Air Pollution Control District.
San Diego Data Processing Corporation.
San Diego Gas & Electric.
SoCal Gas.
Southern California Edison.
Southern Company.
Southwest Gas Corporation.
Touchstone/NRECA.