Commitments, Guarantees, and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments, Guarantees, and Contingencies

Contracts for procurement of electricity

Contract Duration	Percentage of Estimated Requirements
From January 1, 2012 to September 2012		100	%
From October 2012 to May 2013		75
From June 2013 to September 2013		50
From October 2013 to May 2014		25

Schedule of estimate of future obligations

	Payments
	2012		2013- 2014		2015- 2016		Thereafter		Total
	(In millions)
Competitive Businesses:
Purchased capacity and energy	$	501.1	$	552.5	$	338.5	$	335.3	$	1,727.4
Purchased energy from CENG (1)		1,000.0		2,075.3		1,566.7				4,642.0
Fuel and transportation		656.1		638.6		419.6		321.2		2,035.5
Long-term service agreements, capital, and other		22.9		6.3		2.4		0.9		32.5
Total competitive businesses		2,180.1		3,272.7		2,327.2		657.4		8,437.4
Corporate and Other:
Long-term service agreements, capital, and other		190.4		52.1		43.7		96.9		383.1
Regulated:
Purchase obligations and other		7.3		9.6		—		—		16.9
Total future obligations	$	2,377.8	$	3,334.4	$	2,370.9	$	754.3	$	8,837.4

(1)

As part of reaching a comprehensive agreement with EDF in October 2010, we modified our existing power purchase agreement with CENG to be unit contingent through the end of its original term in 2014. Additionally, beginning in 2015 and continuing to the end of the life of the respective plants, we agreed to purchase 50.01% of the available output of CENG's nuclear plants at market prices. We have included in the table our commitments under this agreement for five years, the time period for which we have more reliable data. Further, we continue to own a 50.01% membership interest in CENG that we account for as an equity method investment. See Note 16 for more details on this agreement.

Schedule of maximum exposure by guarantor

At December 31, 2011	Stated Limit
	(In billions)
Constellation Energy guarantees	$	9.0
BGE guarantees		0.3
Total guarantees	$	9.3