National Grid USA (NGUSA) is a utility in the United States. NGUSA is a wholly owned subsidiary of National Grid plc, an international, London-based company. The utility operates electricity transmission across 29,000 miles and delivers electricity and natural gas to areas of the Northeast states of New York, Massachusetts, Rhode Island, and New Hampshire, serving about 4 million customers with electrical power, including 550,000 customers with natural gas in upstate New York. Before renaming all of its US subsidiaries to "National Grid," NGUSA operated under the names Granite State Electric in New Hampshire, Massachusetts Electric and Nantucket Electric in Massachusetts, Narragansett Electric in Rhode Island, and Niagara Mohawk Power Company in New York. NGUSA is headquartered in Syracuse, New York.  National Grid plc recently announced the acquisition of KeySpan Corporation and the Southern Union Company subsidiary, New England Gas Company in Rhode Island. Both companies are natural gas delivery companies. The acquisitions will materially double the size of NGUSA, and create the second largest utility in the US with over 8 million customers.  In late 2007, National Grid announced

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