POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ ROBERT M. BEAVERS, JR.
 Robert M. Beavers, Jr.
 
 
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ BRUCE P. BICKNER
 Bruce P. Bickner
 
 
  POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ JOHN H. BIRDSALL, III
 John H. Birdsall, III
 
 
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ NORMAN R BOBINS
 Norman R Bobins
  
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ BRENDA J. GAINES
 Brenda J. Gaines
 
 
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ RAYMOND A. JEAN
 Raymond A. Jean
  
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ DENNIS J. KELLER
 Dennis J. Keller
 
 
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ R. EDEN MARTIN
 R. Eden Martin
 
 
 
 POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ GEORGIA R. NELSON
 Georgia R. Nelson
  
  POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ ARMANDO J. OLIVERA
 Armando J. Olivera
  
  POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ JOHN RAU
 John Rau
  
  POWER OF ATTORNEY
 
 
 The undersigned, a Director, Officer, or Director and Officer of Nicor Inc. and Northern Illinois Gas Company (doing business as Nicor Gas Company), Illinois corporations, hereby authorizes any officer of Nicor Inc. and each of them, to execute in the name and on behalf of the undersigned as such Director, Officer, or Director and Officer, the 2010 Annual Report on Form 10-K of Nicor Inc. and Nicor Gas Company (and any amendments thereto) to be filed pursuant to the Securities Exchange Act of 1934.
 
 
 
 Date:  February 17, 2011
 
 
 
 
 
 /s/ JOHN C. STALEY
 John C. Staley