Peoples Gas Light & Coke 10-Q 2007 Q3 Quarterly report

Exhibit 12
The Peoples Gas Light and Coke Company
Ratio of Earnings to Fixed Charges
		Three-Month
		Transition
	2007	Period Ended	For Fiscal Years Ended September 30,
(Millions)	6 months	12/31/2006	2006	2005	2004	2003
EARNINGS
Earnings on common stock	$8.7	$19.1	$(35.5)	$49.3	$45.4	$79.6
Federal and state income taxes	2.0	11.6	(26.1)	26.7	24.4	45.7
Net pretax income	10.7	30.7	(61.6)	76.0	69.8	125.3
Fixed charges	15.3	7.6	27.9	24.7	22.3	24.0
Total earnings as defined	$26.0	$38.3	$(33.7)	$100.7	$92.1	$149.3
FIXED CHARGES
Interest on long-term debt, including related amortization	$11.3	$5.6	$22.2	$21.6	$19.7	$20.7
Other interest	3.1	1.8	4.8	2.2	1.4	1.6
Interest factor applicable to rentals	0.9	0.2	0.9	0.9	1.2	1.7
Fixed charges	$15.3	$7.6	$27.9	$24.7	$22.3	$24.0
Ratio of earnings to fixed charges	1.7	5.0	(1.2)	4.1	4.1	6.2