Exhibit E-13
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KeySpan Corporation and its Subsidiaries
KeySpan Corporation
KeySpan Gas East Corporation d/b/a KeySpan Energy Delivery Long Island
Boundary Gas Inc.
KeySpan Corporate Services, LLC
KeySpan Energy Corporation
The Brooklyn Union Gas Company d/b/a KeySpan Energy Delivery New York
North East Transmission Co., Inc.
Iroquois Gas Transmission System, L.P.
Boundary Gas, Inc.
Alberta Northeast Gas, Ltd.
KeySpan Natural Fuels, LLC
KeySpan NorthEast Ventures, Inc.
Northeast Gas Markets LLC
THEC Holdings Corp.
The Houston Exploration Company
Seneca-Upshur Petroleum, Inc.
GEI Development Corp.
KeySpan Energy Development Corporation
GTM Energy LLC
Honeoye Storage Corporation1
Adrian Associates
KeySpan International Corporation
KeySpan C.I., LTD
KeySpan UK Limited
Premier Transco Limited2
Premier Transco Limited3
Phoenix Natural Gas Limited
KeySpan C.I. II, LTD
Grupo KeySpan, S. de R.L. de C.V.
FINSA Energeticos S. de R.L. de C.V.
KeySpan Cross Bay, LLC
Cross Bay Pipeline Company, LLC
KeySpan Midstream LLC
KS CI Midstream Limited
KeySpan Luxembourg S.A.R.L.
Nicodama Beheer V B.V.
KS Midstream Finance Co.
KeySpan Energy Development Co.
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1 KeySpan Energy Development Corporation holds a 28.8% interest.
2 KeySpan UK Limited holds a 25.5% interest.
3 KeySpan C.I., Ltd. holds a 24.5% interest.
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KeySpan Energy Canada Ltd.
The Taylor Gas Liquids Partnership
Gulf Midstream Services Partnership
Gulf Midstream Services Limited
GMS Facilities Limited
Solex Production Ltd.
KeySpan Utility Services LLC
KeySpan Generation LLC
KeySpan Electric Services LLC
KeySpan Energy Trading Services LLC
Marquez Development Corp.
Island Energy Services Company, Inc.
LILCO Energy Systems, Inc.
Iroquois Gas Transmission System L.P.
KeySpan Ravenswood, Inc.
KeySpan Ravenswood Services Corp.
KeySpan Services Inc.
Binsky & Snyder, Inc.
Binsky & Snyder Service, Inc.
WDF, Inc.
Roy Kay, Inc.
Roy Kay Electrical Company
Roy Kay Mechanical, Inc.
Active Conditioning Corp.
KeySpan Communications Corp.
KeySpan Energy Solutions, LLC
KeySpan Plumbing Solutions, Inc.
Fritze KeySpan, LLC
KeySpan Energy Management, Inc.
KeySpan Engineering Associates, Inc.
R.D. Mortman, LLC
KeySpan Energy Services, Inc.
Delta KeySpan, Inc.
Paulus Sokolowski and Sartor, Inc.
Fourth Avenue Enterprise Piping Corp.
KeySpan Energy Supply LLC
KeySpan Technologies Inc.
Honeoye Storage Corporation4
KeySpan MHK, Inc.
MyHomeKey.com, Inc.
ACJ Acquisition LLC
2
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4 KeySpan Corporation holds a 23.33% interest.
