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National Grid plc
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National Grid (US) Holdings Limited
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National Grid (US) Investments 4
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National Grid (US) Partner 1 Limited
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National Grid (US) Partner 2 Limited
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1-3 Strand
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London, WC2N 5EH
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England
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National Grid General Partnership
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One Rodney Square
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Wilmington, DE 19801
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National Grid Holdings Inc.
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National Grid USA
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25 Research Drive
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Westborough, MA 01582
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NATIONAL GRID PLC
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NATIONAL GRID (US) HOLDINGS LIMITED
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NATIONAL GRID (US) INVESTMENTS 4
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NATIONAL GRID (US) PARTNER 1 LIMITED
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NATIONAL GRID (US) PARTNER 2 LIMITED
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NATIONAL GRID HOLDINGS INC.
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NATIONAL GRID USA
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Date: September 14, 2005
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By:
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/s/ John G.
Cochrane
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John G. Cochrane
Senior Vice President, National Grid USA |
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NATIONAL GRID GENERAL PARTNERSHIP
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By its general partner, National Grid US Partner (1) Limited
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Date: September 14, 2005
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By:
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/s/ John G.
Cochrane
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John G. Cochrane
Senior Vice President, National Grid USA |
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By its general partner, National Grid US Partner (2) Limited
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Date: September 14, 2005
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By:
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/s/ John G.
Cochrane
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John G. Cochrane
Senior Vice President, National Grid USA |