Exhibit 12.01

Nicor Gas Company
Statement Setting Forth Ratio of Earnings to Fixed Charges
Dollars in millions	Fiscal 2011		Fiscal 2010		Fiscal 2009		Fiscal 2008		Fiscal 2007
Net income	$	50	$	101	$	75	$	60	$	66
Add:
Income tax expense		28		59		40		31		34
Fixed charges (see "B" below)		35		37		35		38		41
Adjusted earnings (A)	$	113	$	197	$	150	$	129	$	141
Fixed charges
Interest on debt	$	33	$	35	$	33	$	35	$	38
Other interest charges and amortization of debt discount,
premium, and expense, net		2		2		2		3		3
Total fixed charges (B)	$	35	$	37	$	35	$	38	$	41
Ratio of earnings to fixed charges (A)/(B)		3.23		5.38		4.30		3.37		3.45