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EXHIBIT NO. 21B
LIST OF SUBSIDIARIES OF
THE UNITED ILLUMINATING COMPANY
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STATE OR JURISDICTION
OF INCORPORATION OR NAME UNDER WHICH
NAME OF SUBSIDIARY ORGANIZATION SUBSIDIARY DOES BUSINESS
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<S> <C> <C>
United Resources, Inc. Connecticut United Resources, Inc.
Xcelecom, Inc.* Connecticut Xcelecom, Inc.
American Payment Systems, Inc.* Connecticut American Payment Systems, Inc.
United Bridgeport Energy, Inc.* Connecticut United Bridgeport Energy, Inc.
United Capital Investments, Inc.* Connecticut United Capital Investments, Inc.
Precision Power, Inc.** Connecticut Precision Power, Inc.
McPhee Electric Ltd., LLC** Connecticut McPhee Electric Ltd., LLC
McPhee Utility Power and Signal, Ltd.** Connecticut McPhee Utility Power and Signal, Ltd.
Thermal Energies, Inc.** Connecticut Thermal Energies, Inc.
Precision Constructors, Inc.** Connecticut Precision Constructors, Inc.
Allan Electric Co., Inc.** New Jersey Allan Electric Co., Inc.
The DataStore, Incorporated** New Jersey The DataStore Incorporated
Orlando Diefenderfer Electrical Pennsylvania Orlando Diefenderfer Electrical Contractors,
Contractors, Inc.** Inc.
Souwestcon Properties, Inc.*** Connecticut Souwestcon Properties, Inc.
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* Subsidiary of United Resources, Inc.
** Subsidiary of Xcelecom, Inc.
*** Subsidiary of United Capital Investments, Inc.
