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 2009 Annual Reports 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
19, 2010
    
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
  /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /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 2009 Annual Reports 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
19, 2010
 
 
 
 
 
 /s/ JOHN C.
STALEY
 John C.
Staley