Merger Partners                                                                                                                            

Date Time Event
2/27/06   National Grid has reached a definitive agreement to acquire KeySpan Corporation. KeySpan will become a wholly owned subsidiary of National Grid upon completion of the transaction.
2/17/06   National Grid has agreed to purchase the Rhode Island assets of the New England Gas Company division of Southern Union Company, as well as the stock of Southern Union’s subsidiaries Newport America Corporation and Valley Appliance and Merchandising Company.