NiSource Announces 2011-12 Director Candidates

MERRILLVILLE, Ind., March 25, 2011 /PRNewswire/ — NiSource Inc. (NYSE: NI)
today announced that the following directors are being nominated for re-election
to the company’s Board of Directors for 2011-12.

Ian M. Rolland, Chairman
Richard A. Abdoo
Steven C. Beering
Michael E. Jesanis
Marty R. Kittrell
W. Lee Nutter
Deborah S. Parker
Robert C. Skaggs, Jr., President and
CEO*
Richard L. Thompson
Carolyn Y. Woo

NiSource indicated that current board member Dennis E. Foster has decided to
retire in May 2011 at the conclusion of his current term and is not included as
a Board nominee. He joined the NiSource Board of Directors in 1999.

“On behalf of our team, I would like to thank Dennis for his service and wish
him well in his retirement,” Board Chairman Ian M. Rolland noted.

As part of NiSource’s commitment to contemporary governance practices,
shareholders elect members of the NiSource Board of Directors for one year terms
at the company’s annual shareholder meeting.

Shareholders will receive information about the NiSource 2011 annual shareholder
meeting, as well as the company’s 2010 Annual Report and Proxy Statement, in
April. Additional information about NiSource’s Board of Directors and the
company’s corporate governance practices is available at www.nisource.com.

* With the exception of Robert C. Skaggs, Jr., the Board of Directors is
comprised of independent, non-executive members.

About NiSource

NiSource Inc., based in Merrillville, Ind., is a Fortune 500 company engaged in
natural gas transmission, storage and distribution, as well as electric
generation, transmission and distribution. NiSource operating companies deliver
energy to 3.8 million customers located within the high-demand energy corridor
stretching from the Gulf Coast through the Midwest to New England. Information
about NiSource and its subsidiaries is available via the Internet at
www.nisource.com. NI-F

SOURCE NiSource Inc.