Utilities

Allegheny Power System, Inc.

American Electric Power Company, Inc.

Arkla, Inc.

Baltimore Gas and Electric Company

Bayernwerk AG

British Gas plc

Carolina Power & Light Company

Centerior Energy Corporation

Central and South West Corporation

Chubu Electric Power Company, Incorporated

Chugoku Electric Power Company Inc.

CMS Energy Corporation

The Columbia Gas System, Inc.

Commonwealth Edison Company

Consolidated Edison Company of New York, Inc.

Consolidated Natural Gas Company

The Detroit Edison Company

Dominion Resources, Inc.

Duke Power Company

Electricité de France

ENDESA Group

Enron Corp.

Enserch Corporation

Ente Nazionale per L’energia Elettrica

Entergy Corporation

Florida Progress Corporation

FPL Group, Inc.

Gaz de France

General Public Utilities Corporation

Générale des Eaux Group

Hokkaido Electric Power Company Inc.

Hokuriku Electric Power Company

Houston Industries Incorporated

The Kansai Electric Power Co., Inc.

Kyushu Electric Power Company Inc.

Long Island Lighting Company

Lyonnaise des Eaux-Dumez

N.V. Nederlandse Gasunie

New England Electric System

Niagara Mohawk Power Corporation

Northeast Utilities

Northern States Power Company

Nova Corporation of Alberta

Ohio Edison Company

Osaka Gas Co., Ltd.

Pacific Enterprises

Pacific Gas and Electric Company

PacifiCorp

Panhandle Eastern Corporation

Pennsylvania Power & Light Company

Philadelphia Electric Company

PreussenElektra Aktiengesellschaft

Public Service Enterprise Group Incorporated

Ruhrgas AG

RWE Group

San Diego Gas & Electric Company

SCEcorp

Shikoku Electric Power Company, Inc.

The Southern Company

Texas Utilities Company

Tohoku Electric Power Company, Inc.

The Tokyo Electric Power Company, Incorporated

Tokyo Gas Co., Ltd.

TransCanada PipeLines Limited

Transco Energy Company

Union Electric Company

Vereinigte Elektrizitätswerke Westfalen AG