KeySpan Corporation Announces 2Q 2006 Conference Call

Business Wire, July 27, 2006

NEW YORK -- KeySpan Corporation (NYSE: KSE), the largest gas distribution company in the Northeast, United States, will hold its quarterly conference call to discuss 2nd quarter 2006 results, on Thursday, August 3, 2006, at 10:30 a.m. Eastern Time.

This call is being webcast by CCBN and can be accessed at KeySpan's web site at http://keyspanenergy.investor.com. Alternately, you can listen to the call by dialing (866) 564-7444 from within the United States and Canada, and (719) 234-0008 from all other locations. Conference id is 5254836.

The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com).

A member of the Standard & Poor's 500 Index, KeySpan Corporation (NYSE:KSE) is the largest distributor of natural gas in the Northeast, operating regulated gas utilities in New York, Massachusetts, and New Hampshire that serve 2.6 million customers. These customer- focused businesses are complemented by a portfolio of service companies that offer energy-related products, services, and solutions to homes and businesses. KeySpan is also the largest electric generator in New York State, with approximately 6,600 megawatts of generating capacity that provides power to 1.1 million customers of the Long Island Power Authority (LIPA) on Long Island and supplies approximately 25 percent of New York City's capacity needs. KeySpan also operates LIPA's transmission and distribution system under contract to LIPA. In addition to these assets, KeySpan has strategic investments in pipeline transportation, distribution, storage, and production. KeySpan has headquarters in Brooklyn, New England, and Long Island. For more information, visit KeySpan's web site at www.keyspanenergy.com.

For more information, visit KeySpan's web site at: http://www.keyspanenergy.com . For more detailed financial and strategic information, please visit our Investor Relations web page at http://investor.keyspanenergy.com.