Income Taxes (Tables)

6 Months Ended

Jun. 30, 2011

Income Taxes Tables [Abstract]

Effective Income Tax Rate Reconciliation

For the Three Months Ended June 30, 2011		Exelon		Generation		ComEd		PECO
U.S. Federal statutory rate		35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
	State income taxes, net of Federal income tax benefit	2.0		3.0		3.2		1.5
	Qualified nuclear decommissioning trust fund income	1.3		1.9		0.0		0.0
	Domestic production activities deduction	(1.0)		(1.5)		0.0		0.0
	Tax exempt income	(0.2)		(0.2)		0.0		0.0
	Health Care Reform Acts (a)	0.0		0.0		(4.8)		0.0
	Amortization of investment tax credit	(0.2)		(0.2)		(0.4)		(0.3)
	Plant basis differences	0.0		0.0		0.2		(0.1)
	Production tax credits	(0.9)		(1.5)		0.0		0.0
	Other	(1.1)		(1.8)		0.5		0.1
Effective income tax rate		34.9	%	34.7	%	33.7	%	36.2	%
For the Six Months Ended June 30, 2011		Exelon		Generation		ComEd		PECO
U.S. Federal statutory rate		35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
	State income taxes, net of Federal income tax benefit	3.9		4.7		4.9		(1.6)
	Qualified nuclear decommissioning trust fund income	1.8		2.6		0.0		0.0
	Domestic production activities deduction	(1.0)		(1.4)		0.0		0.0
	Tax exempt income	(0.1)		(0.2)		0.0		0.0
	Health Care Reform Acts (a)	0.0		0.0		(2.8)		0.0
	Amortization of investment tax credit	(0.2)		(0.2)		(0.4)		(0.3)
	Plant basis differences	0.0		0.0		(0.1)		(0.2)
	Production tax credits	(0.9)		(1.3)		0.0		0.0
	Other	(0.8)		(1.4)		0.3		(0.2)
Effective income tax rate		37.7	%	37.8	%	36.9	%	32.7	%

For the Three Months Ended June 30, 2010		Exelon		Generation		ComEd		PECO
U.S. Federal statutory rate		35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
	State income taxes, net of Federal income tax benefit	3.3		2.9		11.2		(6.8)
	Qualified nuclear decommissioning trust fund income	(6.7)		(10.0)		0.0		0.0
	Domestic production activities deduction	(2.4)		(3.4)		0.0		0.0
	Tax exempt income	(0.2)		(0.2)		0.0		0.0
	Amortization of investment tax credit	(0.3)		(0.2)		(0.4)		(0.5)
	Plant basis differences	0.0		0.0		(0.4)		0.4
	Uncertain tax position remeasurement	0.0		(14.9)		47.9		0.0
	Other	(0.4)		(0.8)		(0.2)		(0.2)
Effective income tax rate		28.3	%	8.4	%	93.1	%	27.9	%
For the Six Months Ended June 30, 2010		Exelon		Generation		ComEd		PECO
U.S. Federal statutory rate		35.0	%	35.0	%	35.0	%	35.0	%
Increase (decrease) due to:
	State income taxes, net of Federal income tax benefit	3.6		4.1		7.6		(6.0)
	Qualified nuclear decommissioning trust fund income	(0.7)		(1.0)		0.0		0.0
	Domestic production activities deduction	(2.1)		(2.9)		0.0		0.0
	Tax exempt income	(0.2)		(0.2)		0.0		0.0
	Health Care Reform Acts (b)	3.0		1.5		2.7		2.9
	Amortization of investment tax credit	(0.2)		(0.2)		(0.4)		(0.4)
	Plant basis differences	0.0		0.0		(0.2)		0.2
	Uncertain tax position remeasurement	0.0		(4.5)		18.3		0.0
	Other	(0.2)		(0.3)		0.2		(0.2)
Effective income tax rate		38.2	%	31.5	%	63.2	%	31.5	%

__________

(a) Includes one-time income tax benefit at ComEd recorded pursuant to the 2010 Rate Case order for the recovery of costs related to the passage of the Health Care Reform Acts in 2010. See Note 3 – Regulatory Matters for additional information.

(b)See Note 10 - Retirement Benefits for further discussion regarding the impact of the Health Care Reform Acts on income tax expense.