PART 1—FINANCIAL INFORMATION

Item 1—Financial Statements

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

Constellation Energy Group, Inc. and Subsidiaries

	Three Months Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions, except per share amounts)*
Revenues
Nonregulated revenues	$	4,116.8		$	3,738.3		$	8,255.0		$	7,675.2
Regulated electric revenues	544.3			498.7			1,059.1			1,002.7
Regulated gas revenues	159.1			141.8			561.6			560.1
Total revenues	4,820.2			4,378.8			9,875.7			9,238.0
Expenses
Fuel and purchased energy expenses	3,829.1			3,396.2			7,790.2			7,319.3
Operating expenses	580.4			575.7			1,149.1			1,083.4
Impairment losses and other costs	20.2			—			20.2			—
Workforce reduction costs	2.3			—			2.3			2.2
Merger-related costs	—			7.1			—			9.0
Depreciation, depletion, and amortization	142.8			133.3			275.2			263.5
Accretion of asset retirement obligations	18.2			16.7			35.9			33.2
Taxes other than income taxes	72.8			71.5			146.0			145.1
Total expenses	4,665.8			4,200.5			9,418.9			8,855.7
Income from Operations	154.4			178.3			456.8			382.3
Gains on Sale of CEP LLC Equity	12.9			—			12.9			—
Other Income	45.2			14.3			87.6			29.1
Fixed Charges
Interest expense	71.1			79.3			151.4			156.3
Interest capitalized and allowance for borrowed funds used during construction	(4.5		)	(3.8		)	(8.4		)	(6.5		)
BGE preference stock dividends	3.3			3.3			6.6			6.6
Total fixed charges	69.9			78.8			149.6			156.4
Income from Continuing Operations Before Income Taxes	142.6			113.8			407.7			255.0
Income Tax Expense	26.3			39.8			94.1			79.4
Income from Continuing Operations	116.3			74.0			313.6			175.6
Income (loss) from discontinued operations, net of income taxes of $9.7, $0.8, and $16.7, respectively	—			19.1			(1.6		)	31.4
Net Income	$	116.3		$	93.1		$	312.0		$	207.0
Earnings Applicable to Common Stock	$	116.3		$	93.1		$	312.0		$	207.0
Average Shares of Common Stock Outstanding—Basic	180.3			179.1			180.5			178.8
Average Shares of Common Stock Outstanding—Diluted	182.7			180.7			182.8			180.6
Earnings Per Common Share from Continuing Operations—Basic	$	0.65		$	0.41		$	1.74		$	0.98
Income (loss) from discontinued operations	—			0.11			(0.01		)	0.18
Earnings Per Common Share—Basic	$	0.65		$	0.52		$	1.73		$	1.16
Earnings Per Common Share from Continuing Operations—Diluted	$	0.64		$	0.41		$	1.72		$	0.97
Income (loss) from discontinued operations	—			0.11			(0.01		)	0.18
Earnings Per Common Share—Diluted	$	0.64		$	0.52		$	1.71		$	1.15
Dividends Declared Per Common Share	$	0.435		$	0.3775		$	0.87		$	0.755

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

	Three Months Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Net Income	$	116.3		$	93.1		$	312.0		$	207.0
Other comprehensive (loss) income (OCI)
Hedging instruments:
Reclassification of net loss on hedging instruments from OCI to net income, net of taxes	158.9			133.1			558.3			214.1
Net unrealized loss on hedging instruments, net of taxes	(448.7		)	(294.0		)	(138.4		)	(1,049.0		)
Available-for-sale securities:
Reclassification of net gain on sales of securities from OCI to net income, net of taxes	(1.9		)	—			(2.8		)	(0.3		)
Net unrealized gain (loss) on securities, net of taxes	33.2			(8.5		)	13.7			3.3
Defined benefit obligations:
Amortization of net actuarial loss, prior service cost, and transition obligation included in net periodic benefit cost, net of taxes	6.2			—			12.5			—
Net unrealized gain on foreign currency, net of taxes	2.8			1.1			3.1			1.1
Comprehensive (Loss) Income	$	(133.2	)	$	(75.2	)	$	758.4		$	(623.8	)

See Notes to Consolidated Financial Statements.

Certain prior-period amounts have been reclassified to conform with the current period’s presentation.

CONSOLIDATED BALANCE SHEETS

Constellation Energy Group, Inc. and Subsidiaries

	June 30, 2007*			December 31, 2006
	*(In millions)*
Assets
Current Assets
Cash and cash equivalents	$	1,968.0			$	2,289.1
Accounts receivable (net of allowance for uncollectibles of $48.3 and $48.9, respectively)	3,411.5				3,248.3
Fuel stocks	449.2				599.5
Materials and supplies	208.2				200.2
Mark-to-market energy assets	953.5				1,294.8
Risk management assets	189.9				261.7
Unamortized energy contract assets	62.3				35.2
Deferred income taxes	261.8				674.3
Other	483.5				497.0
Total current assets	7,987.9				9,100.1
Investments and Other Assets
Nuclear decommissioning trust funds	1,330.9				1,240.1
Other investments	389.6				308.6
Regulatory assets (net)	627.0				389.0
Goodwill	157.7				157.6
Mark-to-market energy assets	755.8				623.4
Risk management assets	439.1				325.7
Unamortized energy contract assets	185.5				123.6
Other	317.5				311.4
Total investments and other assets	4,203.1				3,479.4
Property, Plant and Equipment
Nonregulated property, plant and equipment	7,924.2				7,587.6
Regulated property, plant and equipment	5,893.4				5,752.9
Nuclear fuel (net of amortization)	329.2				339.9
Accumulated depreciation	(4,620.2		)		(4,458.3		)
Net property, plant and equipment	9,526.6				9,222.1
Total Assets	$	21,717.6			$	21,801.6

* Unaudited
See Notes to Consolidated Financial Statements.

CONSOLIDATED BALANCE SHEETS

Constellation Energy Group, Inc. and Subsidiaries

	June 30, 2007*			December 31, 2006
	*(In millions)*
Liabilities and Equity
Current Liabilities
Current portion of long-term debt	$	303.4			$	878.8
Accounts payable and accrued liabilities	2,278.1				2,137.2
Customer deposits and collateral	494.7				347.2
Mark-to-market energy liabilities	728.6				1,071.7
Risk management liabilities	815.7				1,340.0
Unamortized energy contract liabilities	456.7				378.3
Accrued expenses and other	629.6				969.5
Total current liabilities	5,706.8				7,122.7
Deferred Credits and Other Liabilities
Deferred income taxes	1,359.8				1,435.8
Asset retirement obligations	1,007.8				974.8
Mark-to-market energy liabilities	448.2				392.4
Risk management liabilities	711.7				707.3
Unamortized energy contract liabilities	1,408.5				958.0
Defined benefit obligations	834.3				928.3
Deferred investment tax credits	53.8				57.2
Other	148.2				109.0
Total deferred credits and other liabilities	5,972.3				5,562.8
Long-term Debt
Long-term debt of Constellation Energy	2,433.7				3,042.9
Long-term debt of nonregulated businesses	325.3				347.4
Rate stabilization bonds of BGE	623.2				—
First refunding mortgage bonds of BGE	123.1				244.5
Other long-term debt of BGE	1,214.5				1,214.5
6.20% deferrable interest subordinated debentures due October 15, 2043 to BGE wholly owned BGE Capital Trust II relating to trust preferred securities	257.7				257.7
Unamortized discount and premium	(5.3		)		(5.9		)
Current portion of long-term debt	(303.4		)		(878.8		)
Total long-term debt	4,668.8				4,222.3
Minority Interests	20.7				94.5
BGE Preference Stock Not Subject to Mandatory Redemption	190.0				190.0
Common Shareholders’ Equity
Common stock	2,723.0				2,738.6
Retained earnings	3,593.2				3,474.3
Accumulated other comprehensive loss	(1,157.2		)		(1,603.6		)
Total common shareholders’ equity	5,159.0				4,609.3
Commitments, Guarantees, and Contingencies (see Notes)
Total Liabilities and Equity	$	21,717.6			$	21,801.6

* Unaudited
See Notes to Consolidated Financial Statements.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

Constellation Energy Group, Inc. and Subsidiaries

*Six Months Ended June 30,*	2007			2006
	*(In millions)*
Cash Flows From Operating Activities
Net income	$	312.0		$	207.0
Adjustments to reconcile to net cash provided by (used in) operating activities
Gain on sales of discontinued operations	—			(0.9		)
Depreciation, depletion, and amortization	239.5			287.5
Accretion of asset retirement obligations	35.9			33.2
Deferred income taxes	60.2			(26.9		)
Investment tax credit adjustments	(3.4		)	(3.5		)
Deferred fuel costs	(260.5		)	17.8
Defined benefit obligation expense	73.1			64.7
Defined benefit obligation payments	(146.5		)	(69.7		)
Workforce reduction costs	2.3			2.2
Impairment losses and other costs	20.2			—
Gains on sale of CEP LLC equity	(12.9		)	—
Equity in earnings of affiliates less than dividends received	33.4			16.1
Proceeds from derivative power sales contracts classified as financing activities under SFAS No. 149	(3.8		)	(44.1		)
Changes in
Accounts receivable	10.8			38.2
Mark-to-market energy assets and liabilities	0.4			(181.7		)
Risk management assets and liabilities	16.8			1.3
Materials, supplies, and fuel stocks	72.7			(188.2		)
Other current assets	11.4			11.6
Accounts payable and accrued liabilities	133.3			(303.0		)
Other current liabilities	(179.3		)	(286.8		)
Other	(5.5		)	5.9
Net cash provided by (used in) operating activities	410.1			(419.3		)
Cash Flows From Investing Activities
Investments in property, plant and equipment	(564.1		)	(414.4		)
Acquisitions, net of cash acquired	(250.6		)	(126.2		)
Investments in nuclear decommissioning trust fund securities	(352.7		)	(236.2		)
Proceeds from nuclear decommissioning trust fund securities	343.9			227.4
Sales of investments and other assets	4.7			43.1
Contract and portfolio acquisitions	(474.2		)	(2.3		)
Other	(0.6		)	8.3
Net cash used in investing activities	(1,293.6		)	(500.3		)
Cash Flows From Financing Activities
Net issuance of short-term borrowings	—			154.3
Proceeds from issuance of
Common stock	39.2			40.8
Long-term debt	643.2			122.0
Repayment of long-term debt	(731.7		)	(123.0		)
Common stock dividends paid	(147.6		)	(127.7		)
Reacquisition of common stock	(114.4		)	—
Proceeds from contract and portfolio acquisitions	847.8			221.3
Proceeds from derivative power sales contracts classified as financing activities under SFAS No. 149	3.8			44.1
Other	22.1			2.9
Net cash provided by financing activities	562.4			334.7
Net Decrease in Cash and Cash Equivalents	(321.1		)	(584.9		)
Cash and Cash Equivalents at Beginning of Period	2,289.1			813.0
Cash and Cash Equivalents at End of Period	$	1,968.0		$	228.1

See Notes to Consolidated Financial Statements.

Certain prior-period amounts have been reclassified to conform with the current period’s presentation.

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

Baltimore Gas and Electric Company and Subsidiaries

	Three Months Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues
Electric revenues	$	544.3		$	498.7		$	1,059.1		$	1,002.7
Gas revenues	162.8			143.6			570.1			563.8
Total revenues	707.1			642.3			1,629.2			1,566.5
Expenses
Operating expenses
Electricity purchased for resale	320.9			279.8			595.1			542.7
Gas purchased for resale	102.9			83.8			387.0			382.2
Operations and maintenance	131.3			120.3			254.4			240.3
Merger-related costs	—			1.9			—			2.5
Depreciation and amortization	58.5			57.2			117.4			114.9
Taxes other than income taxes	43.0			40.8			88.8			84.3
Total expenses	656.6			583.8			1,442.7			1,366.9
Income from Operations	50.5			58.5			186.5			199.6
Other Income	5.4			0.9			10.0			1.0
Fixed Charges
Interest expense	29.1			24.3			57.1			48.5
Allowance for borrowed funds used during construction	(0.7		)	(0.5		)	(1.1		)	(0.9		)
Total fixed charges	28.4			23.8			56.0			47.6
Income Before Income Taxes	27.5			35.6			140.5			153.0
Income Taxes	10.6			13.9			54.3			59.6
Net Income	16.9			21.7			86.2			93.4
Preference Stock Dividends	3.3			3.3			6.6			6.6
Earnings Applicable to Common Stock	$	13.6		$	18.4		$	79.6		$	86.8

See Notes to Consolidated Financial Statements.

CONSOLIDATED BALANCE SHEETS

Baltimore Gas and Electric Company and Subsidiaries

	June 30, 2007*			December 31, 2006
	*(In millions)*
Assets
Current Assets
Cash and cash equivalents	$	634.7			$	10.9
Accounts receivable (net of allowance for uncollectibles of $16.1 and $16.1, respectively)	410.0				344.7
Investment in cash pool, affiliated company	—				60.6
Accounts receivable, affiliated companies	2.2				2.5
Fuel stocks	77.6				110.9
Materials and supplies	45.6				40.2
Prepaid taxes other than income taxes	0.3				48.0
Regulatory assets, net	61.4				62.5
Other	18.8				35.2
Total current assets	1,250.6				715.5
Investments and Other Assets
Regulatory assets (net)	627.0				389.0
Receivable, affiliated company	166.0				150.5
Other	139.5				127.5
Total investments and other assets	932.5				667.0
Utility Plant
Plant in service
Electric	4,138.4				4,060.2
Gas	1,165.1				1,148.3
Common	444.1				444.6
Total plant in service	5,747.6				5,653.1
Accumulated depreciation	(2,042.6		)		(1,994.7		)
Net plant in service	3,705.0				3,658.4
Construction work in progress	143.4				97.1
Plant held for future use	2.4				2.7
Net utility plant	3,850.8				3,758.2
Total Assets	$	6,033.9			$	5,140.7

* Unaudited

See Notes to Consolidated Financial Statements.

CONSOLIDATED BALANCE SHEETS

Baltimore Gas and Electric Company and Subsidiaries

	June 30, 2007 *			December 31, 2006
	*(In millions)*
Liabilities and Equity
Current Liabilities
Current portion of long-term debt	$	287.9			$	258.3
Accounts payable and accrued liabilities	159.4				187.3
Accounts payable and accrued liabilities, affiliated companies	155.0				163.4
Borrowing from cash pool, affiliated company	270.8				—
Customer deposits	72.1				71.4
Deferred income taxes	38.2				47.4
Accrued expenses and other	102.1				98.3
Total current liabilities	1,085.5				826.1
Deferred Credits and Other Liabilities
Deferred income taxes	778.3				697.7
Payable, affiliated company	248.7				250.7
Deferred investment tax credits	12.7				13.5
Other	18.5				14.0
Total deferred credits and other liabilities	1,058.2				975.9
Long-term Debt
Rate stabilization bonds	623.2				—
First refunding mortgage bonds	123.1				244.5
Other long-term debt	1,214.5				1,214.5
6.20% deferrable interest subordinated debentures due October 15, 2043 to wholly owned BGE Capital Trust II relating to trust preferred securities	257.7				257.7
Long-term debt of nonregulated businesses	25.0				25.0
Unamortized discount and premium	(2.7		)		(2.9		)
Current portion of long-term debt	(287.9		)		(258.3		)
Total long-term debt	1,952.9				1,480.5
Minority Interest	16.7				16.7
Preference Stock Not Subject to Mandatory Redemption	190.0				190.0
Common Shareholder’s Equity
Common stock	912.2				912.2
Retained earnings	817.7				738.6
Accumulated other comprehensive income	0.7				0.7
Total common shareholder’s equity	1,730.6				1,651.5
Commitments, Guarantees, and Contingencies (see Notes)
Total Liabilities and Equity	$	6,033.9			$	5,140.7

* Unaudited

See Notes to Consolidated Financial Statements.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

Baltimore Gas and Electric Company and Subsidiaries

*Six Months Ended June 30,*	2007			2006
	*(In millions)*
Cash Flows From Operating Activities
Net income	$	86.2		$	93.4
Adjustments to reconcile to net cash (used in) provided by operating activities
Depreciation and amortization	123.7			121.9
Deferred income taxes	87.3			(15.5		)
Investment tax credit adjustments	(0.8		)	(0.8		)
Deferred fuel costs	(260.5		)	17.8
Defined benefit plan expenses	20.3			22.6
Allowance for equity funds used during construction	(2.1		)	(1.6		)
Changes in
Accounts receivable	(65.3		)	161.4
Accounts receivable, affiliated companies	0.3			0.1
Materials, supplies, and fuel stocks	27.9			25.3
Other current assets	64.1			46.3
Accounts payable and accrued liabilities	(27.9		)	(83.9		)
Accounts payable and accrued liabilities, affiliated companies	(8.5		)	60.2
Other current liabilities	(29.5		)	52.4
Long-term receivables and payables, affiliated companies	(37.8		)	(37.2		)
Other	(1.6		)	5.2
Net cash (used in) provided by operating activities	(24.2		)	467.6
Cash Flows From Investing Activities
Utility construction expenditures (excluding equity portion of allowance for funds used during construction)	(175.5		)	(147.5		)
Change in cash pool at parent	331.4			(241.7		)
Other	(3.1		)	10.3
Net cash provided by (used in) investing activities	152.8			(378.9		)
Cash Flows From Financing Activities
Proceeds from issuance of long-term debt	623.2			—
Repayment of long-term debt	(121.4		)	(25.0		)
Preference stock dividends paid	(6.6		)	(6.6		)
Distribution to parent	—			(59.8		)
Net cash provided by (used in) financing activities	495.2			(91.4		)
Net Increase (Decrease) in Cash and Cash Equivalents	623.8			(2.7		)
Cash and Cash Equivalents at Beginning of Period	10.9			15.1
Cash and Cash Equivalents at End of Period	$	634.7		$	12.4

See Notes to Consolidated Financial Statements.

Certain prior-period amounts have been reclassified to conform with the current period’s presentation.

Various factors can have a significant impact on our results for interim periods. This means that the results for this quarter are not necessarily indicative of future quarters or full year results given the seasonality of our business.

Our interim financial statements on the previous pages reflect all adjustments that management believes are necessary for the fair statement of the results of operations for the interim periods presented. These adjustments are of a normal recurring nature.

Basis of Presentation

This Quarterly Report on Form 10-Q is a combined report of Constellation Energy Group, Inc. (Constellation Energy) and Baltimore Gas and Electric Company (BGE). References in this report to “we” and “our” are to Constellation Energy and its subsidiaries, collectively. References in this report to the “regulated business(es)” are to BGE.

Variable Interest Entities

We have a significant interest in the following variable interest entities (VIE) for which we are not the primary beneficiary:

VIE	Nature of Involvement	Date of Involvement
Power projects	Equity investment and guarantees	Prior to 2003
Power contract monetization entities	Power sale agreements, loans, and guarantees	March 2005
Oil and gas fields	Equity investment	May 2006
Retail power supply	Power sale agreement	September 2006

We discuss the nature of our involvement with the power contract monetization VIEs in detail in Note 4 to our 2006 Annual Report on Form 10-K.

The following is summary information available as of June 30, 2007 about the VIEs in which we have a significant interest, but are not the primary beneficiary:

	Power Contract Monetization VIEs			All Other VIEs			Total
	*(In millions)*
Total assets		$	742.8		$	356.5	$	1,099.3
Total liabilities		589.2			151.6		740.8
Our ownership interest		—			49.4		49.4
Other ownership interests		153.6			155.5		309.1
Our maximum exposure to loss		62.6			97.9		160.5

The maximum exposure to loss represents the loss that we would incur in the unlikely event that our interests in all of these entities were to become worthless and we were required to fund the full amount of all guarantees associated with these entities. Our maximum exposure to loss as of June 30, 2007 consists of the following:

¨ outstanding receivables, loans and letters of credit totaling $98.5 million,

¨ the carrying amount of our investment totaling $49.3 million, and

¨ debt and performance guarantees totaling $12.7 million.

We assess the risk of a loss equal to our maximum exposure to be remote.

RSB BondCo LLC

In 2007, BGE formed RSB BondCo LLC (BondCo), a special purpose bankruptcy-remote limited liability company. In June 2007, BondCo purchased rate stabilization property from BGE, including the right to assess, collect, and receive non-bypassable rate stabilization charges payable by all residential electric customers of BGE. These charges are being assessed in order to recover previously incurred power purchase costs that BGE deferred pursuant to Senate Bill 1. We discuss Senate Bill 1 in more detail in our 2006 Annual Report on Form 10-K.

BGE has determined that BondCo is a variable interest entity for which it is also the primary beneficiary. As a result, BGE consolidated BondCo. We discuss the consolidation method of accounting in more detail in Note 1 of our 2006 Annual Report on Form 10-K.

Discontinued Operations

In the fourth quarter of 2006, we completed the sale of six natural gas-fired plants. We recognized an after-tax loss of $1.6 million as a component of “Income (loss) from discontinued operations” for the six months ended June 30, 2007 due to post-closing working capital adjustments. We discuss the details of the sale in Note 2 of our 2006 Annual Report on Form 10-K.

Impairment Losses and Other Costs

In connection with the termination of the merger agreement with FPL Group, Inc., we acquired certain rights relating to a wind development project in Western Maryland. In the second quarter of 2007, we elected not to make the additional investment that was required at that time to retain our rights in the project; therefore, we recorded a charge of $20.2 million pre-tax to write-off our investment in these development rights.

Workforce Reduction Costs

We incurred costs related to workforce reduction efforts initiated in 2006. We discuss these costs in more detail in Note 2 of our 2006 Annual Report on Form 10-K.

The following table summarizes the status of the 2006 involuntary severance liability for Nine Mile Point and Calvert Cliffs at June 30, 2007:

	*(In millions)*
Initial severance liability balance		$ 19.6
Amounts recorded as pension and postretirement liabilities		(7.3	)
Net cash severance liability		12.3
Cash severance payments		(8.6	)
Other		—
Severance liability balance at June 30, 2007		$ 3.7

In June 2007, we approved an additional restructuring of the workforce at our Nine Mile Point nuclear facility. We recognized costs of $2.3 million pre-tax during the quarter ended June 30, 2007 related to the elimination of 23 positions associated with this restructuring.

Earnings Per Share

Basic earnings per common share (EPS) is computed by dividing earnings applicable to common stock by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution of common stock equivalent shares that could occur if securities or other contracts to issue common stock were exercised or converted into common stock.

Our dilutive common stock equivalent shares consist of stock options and other stock-based compensation awards. The following table presents stock options that were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the dilutive common stock equivalent shares:

Quarter Ended
June 30,

Six Months
Ended June 30,

2007

2006

2007

2006

(In millions)

Non-dilutive stock options

—

2.2

—

2.0

Dilutive common stock equivalent shares

2.4

1.6

2.3

1.8

Accretion of Asset Retirement Obligations

We discuss our asset retirement obligations in more detail in Note 1 of our 2006 Annual Report on Form 10-K. The change in our “Asset retirement obligations” liability during 2007 was as follows:

	*(In millions)*
Liability at January 1, 2007		$ 974.8
Accretion expense		35.9
Liabilities incurred		—
Liabilities settled		—
Revisions to expected future cash flows		—
Other		(2.9	)
Liability at June 30, 2007		$ 1,007.8

“Other” represents Constellation Energy Partners LLC’s (CEP) asset retirement obligation that is no longer included in our Consolidated Balance Sheets. We discuss the deconsolidation of CEP on the next page.

In 2007, we are performing site specific studies for all three of our nuclear facilities. We expect to complete these studies and adjust our nuclear decommissioning asset retirement obligations in the third quarter of 2007.

Constellation Energy Partners LLC

In April 2007, CEP acquired 100% ownership of certain coalbed methane properties located in the Cherokee Basin in Kansas and Oklahoma. In anticipation of closing this acquisition and the related equity issuance, at March 31, 2007 we evaluated the probability of forecasted sales of natural gas from CEP’s properties that previously had been hedged by our merchant energy business. As a result of the anticipated deconsolidation of CEP resulting from this equity issuance, which we discuss on the next page, we determined that the hedged forecasted sales were probable of not occurring. Therefore, we reclassified $21.8 million pre-tax in previously deferred cash-flow hedge losses from “Accumulated other comprehensive loss” to earnings during the first quarter of 2007.

As a result of the April 2007 equity issuance by CEP, our ownership percentage in CEP fell below 50 percent. Therefore, during the second quarter of 2007, we deconsolidated CEP and began accounting for our investment using the equity method under Accounting Principles Board Opinion (APB) No. 18, The Equity Method of Accounting for Investments in Common Stock. We discuss the equity method of accounting in more detail in Note 1 of our 2006 Annual Report on Form 10-K.

The details of the April 2007 CEP equity issuance and subsequent equity sales, as well as the gains recognized by or expected to be recoganized by us, are summarized below:

	Units Issued		Price/ Unit		Proceeds to CEP			Approximate pre-tax gain
	*(In millions, except price/unit)*
April 2007 Sale
Common units		2.2	$	26.12		$	58		$	12.5
Class E units 1		0.1	25.84			2			0.4
July 2007 Sale
Common units		2.7	35.25			94			20.6
Class F units 2		3.4	34.43			116			13-18
Pending sale
Common units3		2.5	42.50			105			14-20

1 The gain on Class E units was recognized upon conversion to common units in the quarter ended June 30, 2007.

2 The Class F units are expected to be converted to common units within 90 days after the closing of the July 2007 sale of common units. We expect to record the pre-tax gain upon conversion.

3 The sale of common units and recognition of gain is contingent upon CEP issuing these common units.

Acquisitions

Working Interests in Gas Producing Fields

In the first quarter of 2007, we acquired working interests of 41% and 55% in two gas and oil producing properties in Oklahoma for $212.0 million in cash, subject to closing adjustments. We purchased leases, producing wells, inventory, and related equipment. We have included the results of operations from these properties in our merchant energy business segment since the date of acquisition.

Our preliminary purchase price is allocated to the net assets acquired as follows:

*At March 23, 2007*
	*(In millions)*
Property, Plant and Equipment
Inventory		$ 0.2
Unproved property		7.3
Proved property		204.5
Net Assets Acquired		$ 212.0

The purchase price is subject to closing adjustments, which could impact our purchase price allocation.

We believe that the pro-forma impact of the acquisition of these working interests would not have been material to our results of operations for the three months ended March 31, 2007 and for the quarter and six month periods ended June 30, 2006.

Contract and Portfolio Acquisitions

In June 2007, our wholesale marketing, risk management, and trading operation closed a transaction for the purchase of a portfolio of power-related contracts in the southeast region of the United States. Under this transaction, we assumed several full-requirements fixed-price power sales agreements with peak demand totaling more than 3,000 megawatts, and several long-term tolling agreements. The power sales and tolling agreements terminate at various dates through 2015. In addition, we also assumed various power and natural gas hedges.

The market price was different than the contract prices at closing. As a result, each contract was evaluated to determine whether the fair value of the contract price was above- or below-market at the time of closing. We recorded the fair value of each contract as an asset if the fair value was above-market (in-the-money) and as a liability if the contract was below-market (out-of-the-money).

The table below summarizes the transaction and the net cash received at closing:

	*(In millions)*
Contracts out-of-the-money at closing		$ 820.8
Contracts in-the-money at closing		(474.2	)
Net cash received at closing		$ 346.6

We recorded this transaction in our financial statements as follows:

	Balance Sheet	Cash Flows
Acquisition of out-of-the-money contracts	Unamortized energy contract liabilities and risk management liabilities	Financing cash inflow
Acquisition of in-the-money contracts	Unamortized energy contract assets, mark-to-market energy assets, risk management assets, and accounts receivable	Investing cash outflow

We recorded the acquisition of contracts out-of-the-money at closing as a financing cash inflow because it does not represent a cash inflow from current period operating activities. For those acquired contracts that are derivatives, we record the ongoing cash flows related to the contract with the counterparties as financing cash inflows in accordance with SFAS No. 149, Amendment of Statement 133 on Derivative Instruments and Hedging Activities. We record all other ongoing cash flows from the sale or purchase of power under contracts assumed in this transaction as operating cash flows.

Cornerstone Energy

In July 2007, our retail competitive supply operation acquired 100% ownership of Cornerstone Energy, Inc. for approximately $100 million. Cornerstone Energy, Inc. provides natural gas supply and related services to more than 1,400 commercial, industrial and institutional customers across the central United States. It also provides natural gas and related services to more than 8,500 small commercial businesses. Cornerstone Energy, Inc. is expected to add 100 billion cubic feet of natural gas to our annual volumes served.

Shipping Joint Venture

In December 2006, we formed a shipping joint venture in which we have a 50% ownership interest. The joint venture will own and operate six freight ships. In July 2007, we made an initial cash contribution of approximately $37 million to the joint venture. We expect our total cash contribution will be approximately $60 million in 2007. The joint venture will be accounted for using the equity method of accounting under APB No. 18. We discuss the equity method of accounting in more detail in Note 1 of our 2006 Annual Report on Form 10-K.

Electricite de France Joint Venture

In July 2007, we announced a joint venture, UniStar Nuclear Energy, LLC (UniStar) with an affiliate of Electricite de France, SA (EDF). We have a 50% ownership interest in this joint venture to develop, own, and operate new nuclear projects in the United States and Canada. This joint venture will be accounted for using the equity method of accounting under APB No. 18. The agreement with EDF includes a phased-in investment of $625 million by EDF in UniStar. Initially, EDF will invest $350 million in UniStar, and we will contribute the new nuclear line of businesses we have developed over the past two years and the right to develop possible new nuclear projects at our existing nuclear plant locations. Upon reaching certain licensing milestones, EDF will contribute up to an additional $275 million in UniStar.

In connection with this joint venture, we entered into an investor agreement with EDF under which EDF may purchase in the open market up to a total of 9.9% of our outstanding common stock during the next five years, with a limit of 5% ownership during the first twelve months of the agreement. EDF has agreed to vote any shares of our common stock owned by it in the manner recommended by our Board of Directors and to not take any actions that seek control of Constellation Energy during the next five years.

Information by Operating Segment

Our reportable operating segments are—Merchant Energy, Regulated Electric, and Regulated Gas:

¨ Our merchant energy business is nonregulated and includes:

— full requirements load-serving sales of energy and capacity to utilities, cooperatives, and commercial, industrial, and governmental customers,

— structured transactions and risk management services for various customers (including hedging of output from generating facilities and fuel costs),

— deployment of risk capital through portfolio management and trading activities,

— gas retail energy products and services to commercial, industrial, and governmental customers,

— fossil, nuclear, and interests in hydroelectric generating facilities and qualifying facilities, fuel processing facilities, and power projects in the United States,

— upstream (exploration and production) and downstream (transportation and storage) natural gas operations,

— coal sourcing and logistics services for the variable or fixed supply needs of global customers, and

— generation operations and maintenance and new nuclear development consulting services.

¨ Our regulated electric business purchases, transmits, distributes, and sells electricity in Central Maryland.

¨ Our regulated gas business purchases, transports, and sells natural gas in Central Maryland.

Our remaining nonregulated businesses:

¨ design, construct, and operate heating, cooling, and cogeneration facilities for commercial, industrial, and municipal customers throughout North America, and

¨ provide home improvements, service electric and gas appliances, service heating, air conditioning, plumbing, electrical, and indoor air quality systems, and provide natural gas marketing to residential customers in Central Maryland.

In addition, we own several investments that we do not consider to be core operations. These include financial investments and real estate projects.

Our Merchant Energy, Regulated Electric, and Regulated Gas reportable segments are strategic businesses based principally upon regulations, products, and services that require different technology and marketing strategies. We evaluate the performance of these segments based on net income. We account for intersegment revenues using market prices. A summary of information by operating segment is shown on the next page.

	Reportable Segments
	Merchant Energy Business			Regulated Electric Business		Regulated Gas Business				Other Nonregulated Businesses			Eliminations				Consolidated
	*(In millions)*
For the three months ended June 30,
2007
Unaffiliated revenues	$	4,072.0		$	544.3		$	159.1			$	44.8		$	—			$	4,820.2
Intersegment revenues	267.7			—			3.7				—			(271.4		)		—
Total revenues	4,339.7			544.3			162.8				44.8			(271.4		)		4,820.2
Net income (loss)	102.2			19.4			(5.7		)		0.4			—				116.3
2006
Unaffiliated revenues	$	3,675.4		$	498.7		$	141.8			$	62.9		$	—			$	4,378.8
Intersegment revenues	232.5			—			1.8				—			(234.3		)		—
Total revenues	3,907.9			498.7			143.6				62.9			(234.3		)		4,378.8
Income from discontinued operations	19.1			—			—				—			—				19.1
Net income (loss)	71.7			19.9			(1.4		)		2.9			—				93.1
For the six months ended June 30,
2007
Unaffiliated revenues	$	8,135.5		$	1,059.1		$	561.6			$	119.5		$	—			$	9,875.7
Intersegment revenues	590.6			—			8.5				—			(599.1		)		—
Total revenues	8,726.1			1,059.1			570.1				119.5			(599.1		)		9,875.7
Loss from discontinued operations	(1.6		)	—			—				—			—				(1.6		)
Net income	222.2			51.6			28.0				10.2			—				312.0
2006
Unaffiliated revenues	$	7,551.5		$	1,002.7		$	560.1			$	123.7		$	—			$	9,238.0
Intersegment revenues	439.7			—			3.7				0.1			(443.5		)		—
Total revenues	7,991.2			1,002.7			563.8				123.8			(443.5		)		9,238.0
Income from discontinued operations	30.5			—			—				0.9			—				31.4
Net income	115.3			53.5			33.6				4.6			—				207.0

Certain prior year amounts have been reclassified to conform with the current year’s presentation. The reclassifications primarily relate to operations that have been classified as discontinued operations in the current year.

Pension and Postretirement Benefits

We show the components of net periodic pension benefit cost in the following table:

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Components of net periodic pension benefit cost
Service cost	$	12.2		$	12.9		$	24.7		$	24.6
Interest cost	22.9			24.0			47.3			44.5
Expected return on plan assets	(24.7		)	(26.2		)	(51.3		)	(48.5		)
Recognized net actuarial loss	8.4			10.2			16.4			18.8
Amortization of prior service cost	1.3			1.5			2.6			2.8
Amount capitalized as construction cost	(2.9		)	(3.8		)	(5.9		)	(6.7		)
Net periodic pension benefit cost1	$	17.2		$	18.6		$	33.8		$	35.5

1 BGE’s portion of our net periodic pension benefit cost, excluding amounts capitalized, was $5.1 million for the quarter ended June 30, 2007 and $6.8 million for the quarter ended June 30, 2006. BGE’s portion of our net periodic pension benefit cost, excluding amounts capitalized, was $10.3 million for the six months ended June 30, 2007 and $12.4 million for the six months ended June 30, 2006.

We show the components of net periodic postretirement benefit cost in the following table:

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Components of net periodic postretirement benefit cost
Service cost	$	1.8		$	2.1		$	3.5		$	4.2
Interest cost	7.1			6.6			13.3			12.8
Amortization of transition obligation	0.7			0.6			1.2			1.1
Recognized net actuarial loss	0.8			1.6			2.2			3.6
Amortization of prior service cost	(1.1		)	(1.0		)	(1.9		)	(1.9		)
Amount capitalized as construction cost	(2.2		)	(2.3		)	(4.3		)	(4.3		)
Net periodic postretirement benefit cost1	$	7.1		$	7.6		$	14.0		$	15.5

1 BGE’s portion of our net periodic postretirement benefit cost, excluding amounts capitalized, was $4.2 million for the quarter ended June 30, 2007 and $4.4 million for the quarter ended June 30, 2006. BGE’s portion of our net periodic postretirement benefit costs, excluding amounts capitalized, was $8.2 million for the six months ended June 30, 2007 and $8.7 million for the six months ended June 30, 2006.

Our non-qualified pension plans and our postretirement benefit programs are not funded; however, we have trust assets securing certain executive pension benefits. We estimate that we will incur approximately $4 million in pension benefit payments for our non-qualified pension plans and approximately $30 million for retiree health and life insurance benefit payments during 2007. We contributed $125.0 million to our qualified pension plans in March 2007.

Financing Activities

Constellation Energy had committed bank lines of credit under facilities totaling $4.55 billion at June 30, 2007 for short-term financial needs. We discuss these facilities in more detail in Note 8 of our 2006 Annual Report on Form 10-K. At June 30, 2007, these facilities can issue letters of credit up to approximately $4.05 billion. Letters of credit issued under all of our facilities totaled $1.5 billion at June 30, 2007.

In July 2007, we entered into a new five-year credit facility totaling $3.85 billion. This new facility amended and restated three facilities totaling $3.35 billion—a $1.5 billion facility that would have expired in March 2010, a $1.1 billion facility that would have expired in November 2010, and a $750 million facility that would have expired in November 2010. In connection with entering into the new five-year credit facility, we terminated a $1.0 billion facility that would have expired in October 2007. As of August 1, 2007, we had committed bank lines of credit under facilities totaling $4.05 billion for short-term financial needs. These facilities can issue letters of credit up to approximately $4.05 billion.

In June 2007, BondCo, a subsidiary of BGE, issued an aggregate principal amount of $623.2 million of rate stabilization bonds to recover deferred power purchase costs. We discuss BondCo in more detail on page 11. Below are the details of the rate stabilization bonds:

Principal	Interest Rate			Scheduled Maturity Date
$284.0		5.47	%	October 2012
220.0		5.72		April 2016
119.2		5.82		April 2017

The bonds are secured primarily by a usage-based, non-bypassable charge payable by all of BGE’s residential electric customers over the next ten years. The charges will be adjusted semi-annually to ensure that the aggregate charges collected are sufficient to pay principal and interest on the bonds as well as certain on-going costs of administering and servicing the bonds. BondCo cannot use the charges collected to satisfy any other obligations. BondCo’s assets are not assets of any affiliate and are not available to pay creditors of any affiliate of BondCo. If BondCo is unable to make principal and interest payments on the bonds, neither Constellation Energy nor BGE are required to make the payments on behalf of BondCo.

In connection with the equity issuance by CEP discussed beginning on page 12, we deconsolidated CEP and began accounting for our investment using the equity method of accounting under APB No. 18. As a result, the $32.0 million of borrowings outstanding under the CEP credit facility at the time of deconsolidation are no longer included in our Consolidated Balance Sheets.

Under our shareholder investment plans we issued $39.2 million of common stock during the six months ended June 30, 2007. In addition, during the first six months of 2007, we purchased $114.4 million of our common stock in the open market. These common shares are held by us in order to satisfy employee stock-based compensation obligations.

Income Taxes

Total income taxes are different from the amount that would be computed by applying the statutory Federal income tax rate of 35% to book income before income taxes as follows:

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Income before income taxes (excluding BGE preference stock dividends)	$	145.9		$	117.1		$	414.3		$	261.6
Statutory federal income tax rate	35		%	35		%	35		%	35		%
Income taxes computed at statutory federal rate	51.1			41.0			145.0			91.5
(Decreases) increases in income taxes due to:
Synthetic fuel tax credits flowed through to income	(42.9		)	(37.9		)	(82.6		)	(72.2		)
Synthetic fuel tax credit phase-out	12.4			25.8			23.9			41.6
Phase-out true up from prior periods	—			3.7			(7.9		)	3.7
State income taxes, net of federal tax benefit	5.8			6.2			17.6			13.6
Other	(0.1		)	1.0			(1.9		)	1.2
Total income taxes	$	26.3		$	39.8		$	94.1		$	79.4
Effective tax rate	18.0		%	33.9		%	22.7		%	30.3		%

Certain prior year amounts have been reclassified to conform with the current year’s presentation.

Synthetic fuel tax credits are net of our expectation of a 29% phase-out in 2007 based on forward market prices and volatilities at June 30, 2007. In the first quarter of 2007, we recorded $7.9 million of additional tax credits related to 2006 to reflect the impact of the final oil reference price and inflation factor published by the Internal Revenue Service (IRS) in 2007.

Based on forward market prices and volatilities as of July 27, 2007, we currently estimate a 44% tax credit phase-out in 2007. The expected amount of synthetic fuel tax credits phased-out may change materially from period to period as a result of continued changes in oil prices.

We discuss the adoption of the Financial Accounting Standards Board’s (FASB) Interpretation No. (FIN) 48, Accounting for Uncertainty in Income Taxes, beginning on page 22.

Commitments, Guarantees, and Contingencies

We have made substantial commitments in connection with our merchant energy, regulated electric and gas, and other nonregulated businesses. These commitments relate to:

¨ purchase of electric generating capacity and energy,

¨ procurement and delivery of fuels,

¨ the capacity and transmission and transportation rights for the physical delivery of energy to meet our obligations to our customers, and

¨ long-term service agreements, capital for construction programs, and other.

Our merchant energy business enters into various long-term contracts for the procurement and delivery of fuels to supply our generating plant requirements. In most cases, our contracts contain provisions for price escalations, minimum purchase levels, and other financial commitments. These contracts expire in various years between 2007 and 2020. In addition, our merchant energy business enters into long-term contracts for the capacity and transmission rights for the delivery of energy to meet our physical obligations to our customers. These contracts expire in various years between 2007 and 2019.

Our merchant energy business also has committed to long-term service agreements and other purchase commitments for our plants.

Our regulated electric business enters into various long-term contracts for the procurement of electricity. These contracts expire between 2007 and 2009. Our regulated gas business has gas transportation and storage contracts that expire between 2007 and 2028. As discussed in Note 1 of our 2006 Annual Report on Form 10-K, the costs under these contracts are fully recoverable by our regulated businesses.

Our other nonregulated businesses have committed to gas purchases, as well as to contribute additional capital for construction programs and joint ventures in which they have an interest.

We have also committed to long-term service agreements and other obligations related to our information technology systems.

At June 30, 2007, the total amount of commitments was $7,994.6 million. These commitments are primarily related to our merchant energy business.

Long-Term Power Sales Contracts

We enter into long-term power sales contracts in connection with our load-serving activities. We also enter into long-term power sales contracts associated with certain of our power plants. Our load-serving power sales contracts extend for terms through 2019 and provide for the sale of energy to electricity distribution utilities and certain retail customers. Our power sales contracts associated with power plants we own extend for terms into 2014 and provide for the sale of all or a portion of the actual output of certain of our power plants. All long-term contracts were executed at pricing that approximated market rates, including profit margin, at the time of execution.

Guarantees

Our guarantees do not represent incremental Constellation Energy obligations; rather they primarily represent parental guarantees of subsidiary obligations. The following table summarizes the maximum exposure based on the stated limit of our outstanding guarantees:

*At June 30, 2007*	Stated Limit
	*(In millions)*
Competitive supply guarantees		$	11,683.0
Nuclear guarantees		783.6
BGE guarantees		263.3
Other non-regulated guarantees		79.0
Power project guarantees		19.2
Total guarantees		$	12,828.1

At June 30, 2007, Constellation Energy had a total of $12,828.1 million in guarantees outstanding related to loans, credit facilities, and contractual performance of certain of its subsidiaries as described below.

¨ Constellation Energy guaranteed $11,683.0 million on behalf of our subsidiaries for competitive supply activities. These guarantees are put into place in order to allow our subsidiaries the flexibility needed to conduct business with counterparties without having to post other forms of collateral. While the face amount of these guarantees is $11,683.0 million, our calculated fair value of obligations for commercial transactions covered by these guarantees was $3,493.2 million at June 30, 2007. The $3,493.2 million represents the total amount Constellation Energy could be required to fund based on market prices as of June 30, 2007, if the subsidiaries do not honor contractual commitments covered by these guarantees. For those guarantees related to our mark-to-market energy or risk management liabilities, the fair value of the obligation is recorded in our Consolidated Balance Sheets.

¨ Constellation Energy guaranteed $783.6 million primarily on behalf of our nuclear generating facilities for nuclear insurance and credit support to ensure these plants have funds to meet expenses and obligations to safely operate and maintain the plants.

¨ BGE guaranteed the Trust Preferred Securities of $250.0 million of BGE Trust II.

¨ BGE guaranteed two-thirds of certain debt of Safe Harbor Water Power Corporation, an unconsolidated investment. At June 30, 2007, Safe Harbor Water Power Corporation had outstanding debt of $20.0 million. The maximum amount of BGE’s guarantee is $13.3 million.

¨ Constellation Energy guaranteed $67.6 million on behalf of our other nonregulated businesses primarily for loans and performance bonds of which $25.0 million was recorded in our Consolidated Balance Sheets at June 30, 2007.

¨ Our other nonregulated business guaranteed $11.4 million primarily for performance bonds.

¨ Our merchant energy business guaranteed $19.2 million for loans and other performance guarantees related to certain power projects in which we have an investment.

We believe it is unlikely that we would be required to perform or incur any losses associated with guarantees of our subsidiaries’ obligations.

Contingencies

Revenue Sufficiency Guarantee Costs

During 2006, the Federal Energy Regulatory Commission (FERC) issued orders finding that the Midwest Independent System Operator (MISO) violated its tariff by incorrectly allocating revenue sufficiency guarantee (RSG) charges among market participants. As a result of FERC orders, MISO proposed a revised methodology for the allocation of RSG charges in its December 2006 compliance filing with the FERC with a proposed effective date of April 1, 2007.

In March 2007, FERC rejected the RSG allocation methodology proposed by MISO in its December 2006 compliance filing and ordered MISO to reallocate RSG costs based on its existing tariff back to the date of FERC’s original order (April 2006). Based on this FERC order, we recorded an immaterial liability in our Consolidated Balance Sheets based on our estimate of the amount of re-allocated RSGs we believe is probable. Our liability is subject to change based upon MISO’s calculation of the actual RSG adjustment. In addition, the order may be appealed, and we cannot predict the ultimate timing or outcome of any appeal.

Environmental Matters

Solid and Hazardous Waste

The Environmental Protection Agency (EPA) and several state agencies have notified us that we are considered a potentially responsible party with respect to the clean-up of certain environmentally contaminated sites. We cannot estimate the final clean-up costs for all of these sites, but the current estimated costs for, and current status of, each site is described in more detail below.

68th Street Dump

In 1999, the EPA proposed to add the 68th Street Dump in Baltimore, Maryland to the Superfund National Priorities List, which is its list of sites targeted for clean-up and enforcement, and sent a general notice letter to BGE and 19 other parties identifying them as potentially liable parties at the site. In March 2004, we and other potentially responsible parties formed the 68th Street Coalition and entered into consent order negotiations with the EPA to investigate clean-up options for the site under the Superfund Alternative Sites Program. In May 2006, a settlement among the EPA and 19 of the potentially responsible parties, including BGE, with respect to investigation of the site became effective. The settlement requires the potentially responsible parties, over the course of several years, to identify contamination at the site and recommend clean-up options. BGE is fully indemnified by a wholly-owned subsidiary of Constellation Energy for costs related to this settlement, as well as any clean-up costs. The clean-up costs will not be known until the investigation is closer to completion. However, those costs could have a material effect on our financial results.

Spring Gardens

In December 1996, BGE signed a consent order with the Maryland Department of the Environment that requires it to implement remedial action plans for contamination at and around the Spring Gardens site, located in Baltimore, Maryland. The Spring Gardens site was once used to manufacture gas from coal and oil. Based on remedial action plans and cost modeling performed in late 2006, BGE estimates its probable clean-up costs will total $43 million. BGE has recorded these costs as a liability in its Consolidated Balance Sheets and has deferred these costs, net of accumulated amortization and amounts it recovered from insurance companies, as a regulatory asset. Based on the results of studies at this site, it is reasonably possible that additional costs could exceed the amount BGE has recognized by approximately $3 million. Through June 30, 2007, BGE has spent approximately $40 million for remediation at this site.

BGE also has investigated other small sites where gas was manufactured in the past. We do not expect the clean-up costs of the remaining smaller sites to have a material effect on our financial results.

Air Quality

In late July 2005, we received two Notices of Violation (NOVs) from the Placer County Air Pollution Control District, Placer County California (District) alleging that the Rio Bravo Rocklin facility located in Lincoln, California had violated certain District air emission regulations. We have a combined 50% ownership interest in the partnership which owns the Rio Bravo Rocklin facility. The NOVs allege a total of 38 violations between January 2003 and March 2005 of either the facility’s air permit or federal, state, and county air emission standards related to nitrogen oxide, carbon monoxide, and particulate emissions, as well as violations of certain monitoring and reporting requirements during that time period. The maximum civil penalties for the alleged violations range from $10,000 to $40,000 per violation. Management of the Rio Bravo Rocklin facility is currently discussing the allegations in the NOVs with District representatives. It is not possible to determine the actual liability, if any, of the partnership that owns the Rio Bravo Rocklin facility.

In May 2007, a subsidiary of Constellation Energy entered into a consent decree with the Maryland Department of the Environment to resolve alleged violations of air quality opacity standards at three fossil fuel plants in Maryland. The consent decree requires the subsidiary to pay a $100,000 penalty, provide $100,000 to a supplemental environmental project, and install technology to control emissions from those plants.

Litigation

In the normal course of business, we are involved in various legal proceedings. We discuss the significant matters below.

City of Tacoma v. AEP, et al.,—The City of Tacoma, on June 7, 2004, in the U.S. District Court, Western District of Washington, filed a complaint against over 60 companies, including Constellation Energy Commodities Group, Inc. (CCG). The complaint alleges that the defendants engaged in manipulation of electricity markets resulting in prices for power in the western power markets that were substantially above what market prices would have been in the absence of the alleged unlawful contracts, combinations and conspiracy in violation of Section 1 of the Sherman Act. The complaint further alleges that the total amount of damages is unknown, but is estimated to exceed $175 million. On February 11, 2005, the Court granted the defendants’ motion to dismiss the action based on the Court’s lack of jurisdiction over the claims in question. The plaintiff appealed the dismissal of the action to the Ninth Circuit Court of Appeals, but subsequently agreed to a dismissal with prejudice, which the Ninth Circuit Court ordered on March 20, 2007.

Challenges to the Illinois Auction

In March 2007, the Illinois Attorney General filed a complaint at FERC against the wholesale suppliers, including our wholesale marketing, risk management and trading operation, that were successful bidders in the recent Illinois auction. The complaint alleges that the rates resulting from the auction are not “just and reasonable” and requests that FERC commence a proceeding to determine if the rates are just and reasonable and to investigate evidence of price manipulation. In July 2007, the Illinois legislature approved comprehensive legislation to address several energy issues in the state, including dismissal of all claims against wholesale suppliers by the Attorney General, both in the state of Illinois and before the FERC. This legislation is now before the Governor of Illinois, awaiting his signature.

In addition, two class action complaints have been filed in Illinois state court against these wholesale suppliers alleging that they engaged in deceptive practices, including colluding in setting prices and actual price fixing. The complaints seek unspecified damages in an amount to be proven at trial. These complaints subsequently were moved to federal court.

We believe we have meritorious defenses to these claims challenging the Illinois auction and our conduct in the auction and intend to defend against them vigorously. However, we cannot predict the timing, or outcome, of these proceedings, or their possible effect on our financial results.

Mercury

Since September 2002, BGE, Constellation Energy, and several other defendants have been involved in numerous actions filed in the Circuit Court for Baltimore City, Maryland alleging mercury poisoning from several sources, including coal plants formerly owned by BGE. The plants are now owned by a subsidiary of Constellation Energy. In addition to BGE and Constellation Energy, approximately 11 other defendants, consisting of pharmaceutical companies, manufacturers of vaccines, and manufacturers of Thimerosal have been sued. Approximately 70 cases, involving claims related to approximately 132 children, have been filed to date, with each claimant seeking $20 million in compensatory damages, plus punitive damages, from us.

In rulings applicable to all but four of the cases, involving claims related to approximately 45 children, the Circuit Court for Baltimore City dismissed with prejudice all claims against BGE and Constellation Energy. Plaintiffs may attempt to pursue appeals of the rulings in favor of BGE and Constellation Energy once the cases are finally concluded as to all defendants. We believe that we have meritorious defenses and intend to defend the remaining actions vigorously. However, we cannot predict the timing, or outcome, of these cases, or their possible effect on our, or BGE’s, financial results.

Asbestos

Since 1993, BGE and certain Constellation Energy subsidiaries have been involved in several actions concerning asbestos. The actions are based upon the theory of “premises liability,” alleging that BGE and Constellation Energy knew of and exposed individuals to an asbestos hazard. BGE and Constellation Energy, and numerous other parties are defendants in these cases.

Approximately 535 individuals who were never employees of BGE or Constellation Energy have pending claims each seeking several million dollars in compensatory and punitive damages. Cross-claims and third-party claims brought by other defendants may also be filed against BGE and Constellation Energy in these actions. To date, most asbestos claims against us have been dismissed or resolved without any payment and a small minority have been resolved for amounts that were not material to our financial results. The remaining claims are currently pending in state courts in Maryland and Pennsylvania.

BGE and Constellation Energy do not know the specific facts necessary to estimate their potential liability for these claims. The specific facts we do not know include:

¨ the identity of the facilities at which the plaintiffs allegedly worked as contractors,

¨ the names of the plaintiffs’ employers,

¨ the dates on which and the places where the exposure allegedly occurred, and

¨ the facts and circumstances relating to the alleged exposure.

Until the relevant facts are determined, we are unable to estimate what our, or BGE’s, liability might be. Although insurance and hold harmless agreements from contractors who employed the plaintiffs may cover a portion of any awards in the actions, the potential effect on our, or BGE’s, financial results could be material.

Insurance

We discuss our nuclear and non-nuclear insurance programs in Note 12 of our 2006 Annual Report on Form 10-K.

SFAS No. 133 Hedging Activities

We are exposed to market risk, including changes in interest rates and the impact of market fluctuations in the price and transportation costs of electricity, natural gas, and other commodities. We discuss our market risk in more detail in our 2006 Annual Report on Form 10-K.

Commodity Prices

Our merchant energy business uses a variety of derivative and non-derivative instruments to manage the commodity price risk of our competitive supply activities and our electric generation facilities, including power sales, fuel and energy purchases, gas purchased for resale, emission credits, weather risk, freight, and the market risk of outages. In order to manage these risks, we may enter into fixed-price derivative or non-derivative contracts to hedge the variability in future cash flows from forecasted sales of energy and purchases of fuel and energy. The objectives for entering into such hedges include:

¨ fixing the price for a portion of anticipated future electricity sales at a level that provides an acceptable return on our electric generation operations,

¨ fixing the price of a portion of anticipated fuel purchases for the operation of our power plants,

¨ fixing the price for a portion of anticipated energy purchases to supply our load-serving customers, and

¨ fixing the price for a portion of anticipated sales of natural gas to customers.

The portion of forecasted transactions hedged may vary based upon management’s assessment of market, weather, operational, and other factors.

Our merchant energy business designated certain fixed-price forward contracts as cash-flow hedges of forecasted sales of energy and forecasted purchases of fuel and energy for the years 2007 through 2015 under Statement of Financial Accounting Standard (SFAS) No. 133, Accounting for Derivative Instruments and Hedging Activities, as amended. Our merchant energy business had net unrealized pre-tax losses on these cash-flow hedges recorded in “Accumulated other comprehensive loss” of $1,547.8 million at June 30, 2007 and $2,227.1 million at December 31, 2006.

We expect to reclassify $864.0 million of net pre-tax losses on cash-flow hedges from “Accumulated other comprehensive loss” into earnings during the next twelve months based on market prices at June 30, 2007. However, the actual amount reclassified into earnings could vary from the amounts recorded at June 30, 2007, due to future changes in market prices. Additionally, for cash-flow hedges settled by physical delivery of the underlying commodity, “Reclassification of net losses on hedging instruments from OCI to net income” represents the fair value of those derivatives, which is realized through gross settlement at the contract price.

During the six months ended June 30, 2007, we de-designated contracts previously designated as cash-flow hedges for which the forecasted transactions originally hedged are probable of not occurring and as a result we recognized a pre-tax loss of $21.6 million. We discuss the transaction that accounts for substantially all of this amount in more detail in the Constellation Energy Partners LLC section beginning on page 12. During the six months ended June 30, 2006, we de-designated contracts previously designated as cash-flow hedges and as a result we recognized a pre-tax loss of $10.5 million.

Our merchant energy business also enters into natural gas storage contracts under which the gas in storage qualifies for fair value hedge accounting treatment under SFAS No. 133.

We record changes in fair value of hedges related to our retail competitive supply operations as a component of “Fuel and purchased energy expenses” in our Consolidated Statements of Income. We record changes in fair value of hedges related to our wholesale competitive supply operations as a component of “Nonregulated revenues” in our Consolidated Statements of Income.

We recorded in earnings the following pre-tax gains (losses) related to hedge ineffectiveness:

	Quarter Ended					Six Months Ended
	June 30,					June 30,
	2007			2006		2007			2006
	*(In millions)*
Cash-flow hedges	$	(13.8	)	$	10.8	$	(30.3	)	$	5.6
Fair value hedges	3.3			2.6		1.1			1.6
Total	$	(10.5	)	$	13.4	$	(29.2	)	$	7.2

The ineffectiveness amounts in the table above exclude $16.4 million of pre-tax losses that we recognized as a result of market price changes for the quarter and six months ended June 30, 2007. These losses represent the change in fair value of derivatives that did not qualify for cash-flow hedge accounting due to reduced price correlation between the hedge and the risk being hedged, but remain designated as hedges prospectively. Corresponding amounts for the prior year were immaterial.

Interest Rates

We use interest rate swaps to manage our interest rate exposures associated with new debt issuances, to manage our exposure to fluctuations in interest rates on variable rate debt, and to optimize the mix of fixed and floating-rate debt. The swaps used to manage our exposure prior to the issuance of new debt are designated as cash-flow hedges under SFAS No. 133, with the effective portion of gains and losses, net of associated deferred income tax effects, recorded in “Accumulated other comprehensive loss” in anticipation of planned financing transactions. We reclassify gains and losses on the hedges from “Accumulated other comprehensive loss” into “Interest expense” in our Consolidated Statements of Income during the periods in which the interest payments being hedged occur.

The swaps used to optimize the mix of fixed and floating-rate debt are designated as fair value hedges under SFAS No. 133. We record any gains or losses on swaps that qualify for fair value hedge accounting treatment, as well as changes in the fair value of the debt being hedged, in “Interest expense,” and we record any changes in fair value of the swaps and the debt in “Risk management assets and liabilities” and “Long-term debt” in our Consolidated Balance Sheets. In addition, we record the difference between interest on hedged fixed-rate debt and floating-rate swaps in “Interest expense” in the periods that the swaps settle.

“Accumulated other comprehensive loss” includes net unrealized pre-tax gains on interest rate cash-flow hedges terminated upon debt issuance totaling $11.9 million at June 30, 2007 and $12.5 million at December 31, 2006. We expect to reclassify $0.1 million of pre-tax net losses on these cash-flow hedges from “Accumulated other comprehensive loss” into “Interest expense” during the next twelve months. We had no hedge ineffectiveness on these swaps.

In order to optimize the mix of fixed and floating-rate debt, we entered into interest rate swaps qualifying as fair value hedges relating to $450.0 million of our fixed-rate debt maturing in 2012 and 2015, and converted this notional amount of debt to floating-rate. The fair value of these hedges was an unrealized loss of $16.3 million at June 30, 2007 and was recorded as an increase in our “Risk management liabilities” and a decrease in our “Long-term debt.” The fair value of these hedges was an unrealized loss of $7.1 million at December 31, 2006 and was recorded as an increase in our “Risk management liabilities” and a decrease in our “Long-term debt.” We had no hedge ineffectiveness on these interest rate swaps.

Accounting Standards Issued

SFAS No. 159

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities—including an amendment of FASB Statement No. 115. SFAS No. 159 provides the option to report at fair value certain financial instruments that are not currently required or permitted to be measured at fair value. This option would be applied on an instrument by instrument basis. If elected, unrealized gains and losses on the affected financial instruments would be recognized in earnings at each subsequent reporting date. SFAS No. 159 is effective beginning January 1, 2008. We are currently assessing the provisions of SFAS No. 159; however, while the application of the fair value accounting would be optional, the impact of fair value accounting, if elected, could be material to our, or BGE’s, financial results.

FSP FIN 39-1

In April 2007, the FASB issued Staff Position (FSP) FIN 39-1, Amendment of FASB Interpretation No. 39. FSP FIN 39-1 permits an entity to report all derivatives recorded at fair value with any associated fair value cash collateral, which are with the same counterparty under a master netting arrangement, together in the balance sheet. Our wholesale competitive supply operation reports derivative amounts under master netting arrangements net in accordance with FIN 39, Offsetting of Amounts Related to Certain Contracts; however, we report fair value cash collateral separately from our derivative amounts. Under the provisions of this FSP, we must either report all derivatives recorded at fair value net with the associated fair value cash

collateral or report all derivative amounts gross. The effects of FSP FIN 39-1 must be applied by adjusting all financial statements presented beginning January 1, 2008. We are currently evaluating the impact of this FSP; however, this FSP could have a material impact on our financial results.

Accounting Standards Adopted

FIN 48

In July 2006, the FASB issued FIN 48. FIN 48 provides guidance for the recognition and measurement of an entity’s uncertain tax positions. These are defined as positions taken in a previously filed tax return or positions expected to be taken in future tax returns and which result in, among other things, a permanent reduction of income taxes payable, a deferral of income taxes otherwise currently payable to future years, or a change in the expected ability to realize deferred tax assets. Under FIN 48, we are required to recognize the financial statement effects of tax positions if they meet a “more-likely-than-not” threshold. In evaluating items relative to this threshold, we must assess whether each tax position will be sustained based solely on its technical merits assuming examination by a taxing authority.

For those uncertain tax positions that we have recognized in our financial statements, we establish liabilities to reflect the portion of those positions we cannot conclude are “more likely than not” to be realized upon ultimate settlement. These are referred to as liabilities for unrecognized tax benefits under FIN 48. We recognize interest and penalties related to unrecognized tax benefits in “Income tax expense” in our Consolidated Statements of Income.

The adoption of FIN 48 on January 1, 2007, resulted in our recording a $7.3 million incremental liability for unrecognized tax benefits and a corresponding reduction in “Retained earnings” in our Consolidated Balance Sheets as a cumulative effect of change in accounting principle. We also reclassified $49.4 million from existing tax liabilities (primarily deferred income taxes) to the new FIN 48 liability for unrecognized tax benefits. Our resulting total $56.7 million FIN 48 liability for unrecognized tax benefits included $12.1 million of accrued interest and penalties.

Additionally, FIN 48 requires disclosure of total unrecognized tax benefits, regardless of whether or not these amounts are reflected in our balance sheet. We have $59.4 million of unrecognized tax benefits related to outstanding federal and state refund claims for which no tax benefit was previously provided in our financial statements because the claims do not meet the “more-likely-than-not” threshold. Included in this amount is $48.3 million of refund claims that have been disallowed by the applicable tax authorities for which we assess the probability of tax benefit recognition to be remote.

The following table summarizes our total unrecognized tax benefits at January 1, 2007. There have been no significant changes to our unrecognized tax benefits during the six months ended June 30, 2007.

If the total amount of unrecognized tax benefits of $104.0 million were ultimately realized, our income tax expense would decrease by approximately $65 million; however, this includes the $48.3 million of disallowed refund claims discussed above.

We file income tax returns in the United States and foreign jurisdictions. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2002. The IRS commenced an examination of our U.S. income tax returns for 2002, 2003, and 2004 in the third quarter of 2005. We anticipate that these examinations will be completed by the end of 2007.

Recently, the IRS has proposed certain adjustments to our 2002-2004 deductions for repairs and casualty losses. We do not anticipate the adjustments, if any, would result in a material impact on our financial results. However, we anticipate that it is reasonably possible that an additional payment in the range of $20 to $25 million will be made by June 30, 2008, which will reduce our liabilities for unrecognized tax benefits.

The adoption of FIN 48 did not have a material impact on BGE’s financial results.

Related Party Transactions—BGE

Income Statement

BGE is obligated to provide market-based standard offer service to all of its electric customers for varying periods. Bidding to supply BGE’s market-based standard offer service to electric customers will occur from time to time through a competitive bidding process approved by the Maryland PSC.

Our wholesale marketing, risk management, and trading operation supplied a substantial portion of BGE’s market-based standard offer service obligation to residential electric customers through May 31, 2007, and will supply a portion of BGE’s market-based standard offer service obligations for electric customers from June 1, 2007 through May 31, 2009.

The cost of BGE's purchased energy from nonregulated subsidiaries of Constellation Energy to meet its standard offer service obligation was as follows:

Quarter Ended
June 30,

Six Months Ended
June 30,

2007

2006

2007

2006

(In millions)

Purchased energy

254.3

220.7

557.0

408.3

In addition, Constellation Energy charges BGE for the costs of certain corporate functions. Certain costs are directly assigned to BGE. We allocate other corporate function costs based on a total percentage of expected use by BGE. We believe this method of allocation is reasonable and approximates the cost BGE would have incurred as an unaffiliated entity.

The following table presents the costs Constellation Energy charged to BGE in each period.

Quarter Ended
June 30,

Six Months Ended
June 30,

2007

2006

2007

2006

(In millions)

Charges to BGE

35.5

30.1

69.8

61.7

Balance Sheet

BGE participates in a cash pool under a Master Demand Note agreement with Constellation Energy. Under this arrangement, participating subsidiaries may invest in or borrow from the pool at market interest rates. Constellation Energy administers the pool and invests excess cash in short-term investments or issues commercial paper to manage consolidated cash requirements. Under this arrangement, BGE had borrowed $270.8 million at June 30, 2007 and had invested $60.6 million at December 31, 2006.

BGE’s Consolidated Balance Sheets include intercompany amounts related to corporate functions performed at the Constellation Energy holding company, BGE’s purchases to meet its standard offer service obligation, BGE’s charges to Constellation Energy and its nonregulated affiliates for certain services it provides them, and the participation of BGE’s employees in the Constellation Energy defined benefit plans.

We believe our allocation methods are reasonable and approximate the costs that would be charged to unaffiliated entities.

Introduction and Overview

Constellation Energy Group, Inc. (Constellation Energy) is an energy company that conducts its business through various subsidiaries including a merchant energy business and Baltimore Gas and Electric Company (BGE). We describe our operating segments in the Notes to Consolidated Financial Statements on page 14.

This Quarterly Report on Form 10-Q is a combined report of Constellation Energy and BGE. References in this report to “we” and “our” are to Constellation Energy and its subsidiaries, collectively. References in this report to the “regulated business(es)” are to BGE. We discuss our business in more detail in Item 1—Business section of our 2006 Annual Report on Form 10-K and we discuss the risks affecting our business in Item 1A. Risk Factors section on page 49.

Our 2006 Annual Report on Form 10-K includes a detailed discussion of various items impacting our business, our results of operations, and our financial condition. These include:

¨ Introduction and Overview section which provides a description of our business segments,

¨ Strategy section,

¨ Business Environment section, including how regulation, weather, and other factors affect our business, and

¨ Critical Accounting Policies section.

Critical accounting policies are the accounting policies that are most important to the portrayal of our financial condition and results of operations and require management’s most difficult, subjective, or complex judgment. Our critical accounting policies include derivative accounting, evaluation of assets for impairment and other than temporary decline in value, and asset retirement obligations.

In this discussion and analysis, we explain the general financial condition and the results of operations for Constellation Energy and BGE including:

¨ factors which affect our businesses,

¨ our earnings and costs in the periods presented,

¨ changes in earnings and costs between periods,

¨ sources of earnings,

¨ impact of these factors on our overall financial condition,

¨ expected future expenditures for capital projects, and

¨ expected sources of cash for further capital expenditures.

As you read this discussion and analysis, refer to our Consolidated Statements of Income on page 3, which present the results of our operations for the quarters and six months ended June 30, 2007 and 2006. We analyze and explain the differences between periods in the specific line items of the Consolidated Statements of Income.

We have organized our discussion and analysis as follows:

¨ We describe changes to our business environment during the year.

¨ We highlight significant events that occurred in 2007 that are important to understanding our results of operations and financial condition.

¨ We then review our results of operations beginning with an overview of our total company results, followed by a more detailed review of those results by operating segment.

¨ We review our financial condition, addressing our sources and uses of cash, capital resources, commitments, and liquidity.

¨ We conclude with a discussion of our exposure to various market risks.

Business Environment

With the evolving regulatory environment surrounding customer choice, increasing competition, and the growth of our merchant energy business, various factors affect our financial results. We discuss these various factors in the Forward Looking Statements section on page 50 and in Item 1A. Risk Factors section on page 49. We discuss our market risks in the Market Risk section beginning on page 45.

In this section, we discuss in more detail events which have impacted our business during 2007.

Regulation by the Maryland PSC

In April 2007, Senate Bill 400 was enacted, which makes certain modifications to Senate Bill 1. We discuss Senate Bill 1 in more detail in Item 1. Business—Electric Regulatory Matters and Competition section of our 2006 Annual Report on Form 10-K. Under Senate Bill 400, the Maryland Public Service Commission (Maryland PSC) is required to initiate several studies, including studies relating to stranded costs, the costs and benefits of various options for regulation, and the structure of the electric industry in Maryland. The Maryland PSC is required to submit an interim report by December 1, 2007 and a final report by December 1, 2008. We cannot at this time predict the outcome of these studies or their actual effect on our, or BGE’s, financial results, but it could be material.

As required by Senate Bill 1, in May 2007, the Maryland PSC approved a plan allowing residential electric customers the option to defer the transition to market rates from June 1, 2007 to January 1, 2008. Customers participating in the plan will repay the deferred charges beginning April 1, 2008 through December 31, 2009 without interest. Only 4 percent of BGE's residential electric customers opted into this plan, while the remaining

96 percent moved to full market rates effective June 1, 2007. The total amount deferred under this plan is expected to be approximately $6 million.

The Maryland PSC is expected to hold hearings relating to the relationship between Constellation and BGE and the impact of that relationship on the rates paid by BGE residential electric customers. We cannot at this time predict the outcome of any hearings that may be held or how such outcome may affect our, or BGE’s, financial results, but it could be material.

Environmental Matters

Air Quality

National Ambient Air Quality Standards (NAAQS)

In June 2007, the United States Court of Appeals for the District of Columbia Circuit denied a petition by the Environmental Protection Agency (EPA) to rehear a Court decision finding that the EPA must impose fees on emissions sources that failed to achieve applicable ozone standards retroactive to November 2005. At this time, we cannot predict the EPA’s response to the Court’s denial for rehearing including whether the EPA will appeal to the U.S. Supreme Court. In addition, the exact method of computing these fees has not been established and will depend in part on state implementation regulations that have not been finalized. Consequently, we are unable to estimate the ultimate financial impact of the fees in light of the uncertainty surrounding the methodology that will be used in calculating the fees. However, any fees that are ultimately assessed could have a material impact on our financial results.

New Source Review

In April 2007, the U.S. Supreme Court issued a decision regarding the standard to be used to measure emissions when the EPA’s new source review requirements are triggered but did not address when those requirements are triggered. We do not believe the Court’s decision will have a material impact on our financial results.

Global Climate Change

In April 2007, the U.S. Supreme Court ruled that the EPA has authority to regulate carbon dioxide (CO2) emissions from automobiles. Although the decision did not address CO2 emissions from stationary sources such as power generation facilities, federal legislation or regulation addressing CO2 emissions from other sources may now be more likely. We cannot predict the nature or timing of any CO2 legislation or regulation, but any compliance costs we incur could have a material impact on our financial results.

Also in April 2007, Maryland became a full participant in the Northeast Regional Greenhouse Gas Initiative (RGGI). We discuss RGGI in more detail in Item 1—Business section of our 2006 Annual Report on Form 10-K.

Water Quality

Water Intake Regulations

In response to a ruling by the United States Court of Appeals for the Second Circuit that the EPA’s water intake regulations did not properly implement the Clean Water Act requirements in a number of areas, the EPA suspended the second phase of the regulations for existing facilities pending further rulemaking, and directed permitting authorities to use their best professional judgment to establish controls for cooling water intake structures that reflect the best technology available for minimizing adverse environmental impact. We continue to evaluate our compliance options in light of the court decision and the EPA’s order. Until we determine our most viable option, we cannot estimate our compliance costs. However, those costs could be material.

Capital Expenditures

As discussed in our 2006 Annual Report on Form 10-K, we expect to incur additional environmental capital expenditures to comply with air quality laws and regulations. Based on updated information from vendors, we expect our estimated environmental capital requirements to be approximately $200 million in 2007, $550 million in 2008, $330 million in 2009 and $30 million from 2010-2011.

Our estimates may change further as we implement our compliance plan. As discussed in our 2006 Annual Report on Form 10-K, our estimates of capital expenditures continue to be subject to significant uncertainties.

Accounting Standards Issued and Adopted

We discuss recently issued and adopted accounting standards in the Accounting Standards Issued and Accounting Standards Adopted sections of the Notes to Consolidated Financial Statements beginning on page 21.

Events of 2007

Constellation Energy Partners LLC

We discuss the issuances of Constellation Energy Partners LLC equity and their impact on our financial results in more detail in the Notes to Consolidated Financial Statements beginning on page 12.

Acquisitions

Working Interests in Gas Producing Fields

In March 2007, we acquired working interests in gas and oil producing fields. We discuss this acquisition in more detail in the Notes to Consolidated Financial Statements on page 13.

Contract and Portfolio Acquisitions

In June 2007, our wholesale marketing, risk management, and trading operation acquired a portfolio of energy contracts in the southeast region of the United States. We discuss this in more detail in the Notes to Consolidated Financial Statements bginning on page 13.

Cornerstone Energy

In July 2007, we acquired Cornerstone Energy, Inc. We discuss this acquisition in more detail in the Notes to Consolidated Financial Statements on page 14.

Shipping Joint Venture

We formed a shipping joint venture in which we have a 50% ownership interest. We discuss this joint venture in more detail in the Notes to Consolidated Financial Statements on page 14.

Rate Stabilization Bonds

In 2007, BGE formed a special purpose bankruptcy-remote entity to purchase rate stabilization property from BGE and to issue rate stabilization bonds. We discuss this entity and the related financing in more detail in the Notes to Consolidated Financial Statements on pages 11 and 16.

Electricite de France Joint Venture

In July 2007, we announced a joint venture, UniStar Nuclear Energy, LLC, with an affiliate of Electricite de France. We discuss this joint venture in more detail in the Notes to Consolidated Financial Statements on page 14.

Synthetic Fuel Tax Credits

As discussed in our 2006 Annual Report on Form 10-K, the Internal Revenue Code provides for a phase-out of synthetic fuel tax credits if average annual wellhead oil prices increase above certain levels. For 2007, we estimate the tax credit reduction would begin if the reference price exceeds approximately $56 per barrel and would be fully phased out if the reference price exceeds approximately $70 per barrel.

Based on forward market prices and volatilities and current production levels as of June 30, 2007, we estimate a 29% tax credit phase-out in 2007. We discuss the impact of synthetic fuel tax credits on our total income tax expense and effective tax rate in the Notes to Consolidated Financial Statements beginning on page 16.

Based on forward market prices and volatilities and current production levels as of July 27, 2007, we currently estimate a 44% tax credit phase-out in 2007. However, the ultimate amount of tax credits phased-out for 2007, if any, is subject to change based on the actual reference price and production levels for the entire year.

In this section, we discuss our earnings and the factors affecting them. We begin with a general overview, then separately discuss earnings for our operating segments. We discuss changes in other income, fixed charges, and income taxes, as necessary, in the aggregate for all segments in the Consolidated Nonoperating Income and Expenses section on page 40.

Overview

Results

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions, after-tax)*
Merchant energy	$	102.2		$	52.6		$	223.8		$	84.8
Regulated electric	19.4			19.9			51.6			53.5
Regulated gas	(5.7		)	(1.4		)	28.0			33.6
Other nonregulated	0.4			2.9			10.2			3.7
Income from Continuing Operations	116.3			74.0			313.6			175.6
Income (loss) from discontinued operations	—			19.1			(1.6		)	31.4
Net Income	$	116.3		$	93.1		$	312.0		$	207.0
Other Items Included in Operations
Impairment losses and other costs	$	(12.2	)	$	—		$	(12.2	)	$	—
Non-qualifying hedges	1.4			—			(7.9		)	(9.7		)
Workforce reduction costs	(1.5		)	—			(1.5		)	(1.3		)
Merger-related costs	—			(6.0		)	—			(7.5		)
Total Other Items	$	(12.3	)	$	(6.0	)	$	(21.6	)	$	(18.5	)

Certain prior-period amounts have been reclassified to conform with the current period’s presentation.

Quarter Ended June 30, 2007

Our total net income for the quarter ended June 30, 2007 increased $23.2 million, or $0.12 per share, compared to the same period of 2006 mostly because of the following:

¨ We had higher earnings of approximately $34 million after-tax at our merchant energy business due to higher gross margin from the Mid-Atlantic Region. We discuss this increase in gross margin in more detail in the Mid-Atlantic Region section beginning on page 31.

¨ We had higher earnings of approximately $24 million after-tax from an increase in other income mostly due to interest income resulting from a higher cash balance primarily from proceeds from the sale of gas-fired plants in December 2006, and lower fixed charges due to the repayment of $600 million of long-term debt in April 2007.

¨ We had higher earnings of $13.8 million after-tax from our facilities that produce synthetic fuel. We discuss the impact of synthetic fuel tax credits from these facilities in more detail in the Notes to Consolidated Financial Statements beginning on page 16.

¨ We had higher earnings of $6.0 million after-tax due to the absence of merger-related costs associated with our cancelled merger with FPL Group.

These increases were partially offset by the following:

¨ We had lower earnings from discontinued operations of $19.1 million after-tax.

¨ We had lower earnings due to a $12.2 million after-tax charge related to a cancelled wind development project. We discuss this charge in more detail in the Notes to Consolidated Financial Statements on page 12.

¨ We had lower earnings of $18.3 million after-tax at our retail competitive supply operation. We discuss our retail gross margin in more detail in the Competitive Supply section on page 31.

¨ We had lower earnings of $4.8 million after-tax at our regulated businesses due to higher operations and maintenance expenses.

Six Months Ended June 30, 2007

Our total net income for the six months ended June 30, 2007 increased $105.0 million, or $0.56 per share, compared to the same period of 2006 mostly because of the following:

¨ We had higher earnings of approximately $126 million after-tax at our merchant energy business due to higher gross margin from the Mid-Atlantic Region. We discuss this increase in gross margin in more detail in the Mid-Atlantic Region section beginning on page 31.

¨ We had higher earnings of approximately $39 million after-tax from an increase in other income mostly due to interest income resulting from a higher cash balance primarily from proceeds from the sale of gas-fired plants in December 2006, and lower fixed charges due to the repayment of $600 million of long-term debt in April 2007.

¨ We had higher earnings of $28.7 million after-tax from our facilities that produce synthetic fuel.

¨ We had higher earnings of $7.5 million after-tax, due to the absence of merger-related costs associated with our cancelled merger with FPL Group.

These increases were partially offset by the following:

¨ We had lower earnings of approximately $42 million after-tax due to lower gross margin at our wholesale competitive supply operation. We discuss our mark-to-market and wholesale accrual results in more detail in the Competitive Supply section beginning on page 32.

¨ We had lower earnings from discontinued operations of $33.0 million after-tax.

¨ We had lower earnings of $7.5 million after-tax at our regulated businesses due to higher operations and maintenance expenses.

In the following sections, we discuss our net income by business segment in greater detail.

Merchant Energy Business

Background

Our merchant energy business is a competitive provider of energy solutions for various customers. We discuss the impact of deregulation on our merchant energy business in Item 1. Business—Competition section of our 2006 Annual Report on Form 10-K.

Our merchant energy business focuses on delivery of physical, customer-oriented products to producers and consumers, manages the risk and optimizes the value of our owned generation assets, and uses our portfolio management and trading capabilities both to manage risk and to deploy risk capital to generate additional returns. We continue to identify and pursue opportunities which can generate additional returns through portfolio management and trading activities within our business. These opportunities have increased due to the significant growth in scale of our competitive supply operations.

We record merchant energy revenues and expenses in our financial results in different periods depending upon which portion of our business they affect. We discuss our revenue recognition policies in the Critical Accounting Policies section and Note 1 of our 2006 Annual Report on Form 10-K. We summarize our revenue and expense recognition policies as follows:

¨ We record revenues as they are earned and fuel and purchased energy costs as they are incurred for contracts and activities subject to accrual accounting, including certain load-serving activities.

¨ Prior to the settlement of the forecasted transaction being hedged, we record changes in the fair value of contracts designated as cash-flow hedges in other comprehensive income to the extent that the hedges are effective. We record the effective portion of the changes in fair value of hedges in earnings in the period the settlement of the hedged transaction occurs. We record the ineffective portion of the changes in fair value of hedges, if any, in earnings in the period in which the change occurs.

¨ We record changes in the fair value of contracts that are subject to mark-to-market accounting in revenues or fuel and purchased energy expenses in the period in which the change occurs.

Mark-to-market accounting requires us to make estimates and assumptions using judgment in determining the fair value of certain contracts and in recording revenues from those contracts. We discuss the effects of mark-to-market accounting on our results in the Competitive Supply—Mark-to-Market section beginning on page 32.

Our wholesale marketing, risk management, and trading operation actively transacts in energy and energy-related commodities in order to manage our portfolio of energy purchases and sales to customers through structured transactions. As part of these activities, we trade energy and energy-related commodities and deploy risk capital in the management of our portfolio in order to earn additional returns. These activities are managed through daily value at risk and stop loss limits and liquidity guidelines, and may have a material impact on our financial results. We discuss the impact of our trading activities and value at risk in more detail in the Competitive Supply—Mark-to-Market section beginning on page 32 and the Market Risk section on page 45.

Results

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues	$	4,339.7		$	3,907.9		$	8,726.1		$	7,991.2
Fuel and purchased energy expenses	(3,668.3		)	(3,258.7		)	(7,377.1		)	(6,806.7		)
Operating expenses	(431.7		)	(416.7		)	(851.9		)	(779.0		)
Impairment losses and other costs	(20.2		)	—			(20.2		)	—
Workforce reduction costs	(2.3		)	—			(2.3		)	(2.2		)
Merger-related costs	—			(5.0		)	—			(6.3		)
Depreciation, depletion, and amortization	(67.9		)	(66.6		)	(130.8		)	(130.7		)
Accretion of asset retirement obligations	(18.2		)	(16.7		)	(35.9		)	(33.2		)
Taxes other than income taxes	(29.1		)	(30.1		)	(55.9		)	(59.6		)
Income from Operations	$	102.0		$	114.1		$	252.0		$	173.5
Income from Continuing Operations (after-tax)	$	102.2		$	52.6		$	223.8		$	84.8
Income from discontinued operations (after-tax)	—			19.1			(1.6		)	30.5
Net Income	$	102.2		$	71.7		$	222.2		$	115.3
Other Items Included in Operations (after-tax)
Impairment losses and other costs	$	(12.2	)	$	—		$	(12.2	)	$	—
Non-qualifying hedges	1.4			—			(7.9		)	(9.7		)
Workforce reduction costs	(1.5		)	—			(1.5		)	(1.3		)
Merger-related costs	—			(4.2		)	—			(5.2		)
Total Other Items	$	(12.3	)	$	(4.2	)	$	(21.6	)	$	(16.2	)

Certain prior-period amounts have been reclassified to conform with the current period’s presentation. Above amounts include intercompany transactions eliminated in our Consolidated Financial Statements. The Information by Operating Segment section within the Notes to Consolidated Financial Statements on page 14 provides a reconciliation of operating results by segment to our Consolidated Financial Statements.

Revenues and Fuel and Purchased Energy Expenses

Our merchant energy business manages the revenues we realize from the sale of energy to our customers and our costs of procuring fuel and energy. As previously discussed, our merchant energy business uses either accrual or mark-to-market accounting to record our revenues and expenses. Mark-to-market results reflect the net impact of amounts recorded in either revenues or fuel and purchased energy expenses to recognize changes in fair value of derivative contracts subject to mark-to-market accounting during the reporting period.

The difference between revenues and fuel and purchased energy expenses, including all direct expenses, is the gross margin of our merchant energy business, and this measure is a useful tool for assessing the profitability of our merchant energy business. Accordingly, we believe it is appropriate to discuss the operating results of our merchant energy business by analyzing the changes in gross margin between periods. In managing our portfolio, we may terminate, restructure, or acquire contracts. Such transactions are within the normal course of managing our portfolio and may materially impact the timing of our recognition of revenues, fuel and purchased energy expenses, and cash flows.

We analyze our merchant energy gross margin in the following categories because of the risk profile of each category, differences in the revenue sources, and the nature of fuel and purchased energy expenses. With the exception of a portion of our competitive supply activities that we are required to account for using the mark-to-market method of accounting, all of these activities are accounted for on an accrual basis.

¨ Mid-Atlantic Region—our fossil, nuclear, and hydroelectric generating facilities and load-serving activities in the PJM region. This also includes active portfolio management of the generating assets and other physical and financial contractual arrangements, as well as other PJM competitive supply activities.

¨ Plants with Power Purchase Agreements—our Nine Mile Point and Ginna nuclear generating facilities.

¨ Wholesale Competitive Supply—our marketing, risk management, and trading operation that provides energy products and services (including portfolio management and trading activities) primarily to distribution utilities, power generators, and other wholesale customers. We also provide global energy, logistics, and downstream natural gas services.

¨ Retail Competitive Supply—our operation that provides electric and gas energy products and services to commercial, industrial, and governmental customers.

¨ Other—our investments in qualifying facilities and domestic power projects and our generation operations and maintenance services.

We provide a summary of our revenues, fuel and purchased energy expenses, and gross margin as follows:

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(Dollar amounts in millions)*
Revenues:
Mid-Atlantic Region	$	684.3		$	651.6		$	1,232.2		$	1,117.0
Plants with Power Purchase Agreements	162.3			150.9			313.5			303.3
Competitive Supply
Retail	2,158.7			1,845.9			4,380.2			3,870.1
Wholesale	1,330.5			1,249.9			2,775.7			2,670.4
Other	3.9			9.6			24.5			30.4
Total	$	4,339.7		$	3,907.9		$	8,726.1		$	7,991.2
Fuel and purchased energy expenses:
Mid-Atlantic Region	$	(375.6	)	$	(398.9	)	$	(670.9	)	$	(765.0	)
Plants with Power Purchase Agreements	(19.6		)	(19.1		)	(37.6		)	(34.8		)
Competitive Supply
Retail	(2,085.3		)	(1,751.8		)	(4,188.8		)	(3,702.7		)
Wholesale	(1,187.8		)	(1,088.9		)	(2,479.8		)	(2,304.2		)
Other	—			—			—			—
Total	$	(3,668.3	)	$	(3,258.7	)	$	(7,377.1	)	$	(6,806.7	)

			% of Total			% of Total			% of Total			% of Total
Gross Margin:
Mid-Atlantic Region	$	308.7	46%	$	252.7	39%	$	561.3	42%	$	352.0	30%
Plants with Power Purchase Agreements	142.7		21	131.8		20	275.9		20	268.5		23
Competitive Supply
Retail	73.4		11	94.1		14	191.4		14	167.4		14
Wholesale	142.7		22	161.0		25	295.9		22	366.2		31
Other	3.9		—	9.6		2	24.5		2	30.4		2
Total	$	671.4	100%	$	649.2	100%	$	1,349.0	100%	$	1,184.5	100%

Certain prior-period amounts have been reclassified to conform with the current period’s presentation

We discuss below the impact of these items on the applicable categories of merchant energy gross margin for the quarter and six months ended June 30, 2007 compared to the same periods of 2006. We discuss our hedging activities in more detail in the Notes to Consolidated Financials beginning on page 20.

Mid-Atlantic Region

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues	$	684.3		$	651.6		$	1,232.2		$	1,117.0
Fuel and purchased energy expenses	(375.6		)	(398.9		)	(670.9		)	(765.0		)
Gross margin	$	308.7		$	252.7		$	561.3		$	352.0

The increase in gross margin during the quarter ended June 30, 2007 compared to the same period of 2006 is primarily due to approximately $106 million in higher margins on new and existing contracts, which included the effect of the expiration of below-market hedges. This increase in gross margin included higher revenues from BGE of approximately $34 million during the quarter ended June 30, 2007 compared to the same period of 2006. As discussed in our 2006 Annual Report on Form 10-K, our wholesale marketing, risk management, and trading operation served fixed-price standard offer service obligations to BGE from July 1, 2000 until July 1, 2006.

The increase from higher margins on new and existing contracts was partially offset by the following:

¨ the unfavorable impact of approximately $36 million related to losses recognized on cash-flow hedges due to ineffectiveness and certain cash-flow hedges that did not qualify for hedge accounting during the quarter. We discuss this in more detail on page 30, and

¨ the absence of competitive transition charge (CTC) revenue of $14.3 million. In June 2006, all customers completed their CTC obligation.

The increase in gross margin during the six months ended June 30, 2007 compared to the same period of 2006 is primarily due to approximately $289 million in higher margins on new and existing contracts, which included the effect of the expiration of below-market hedges. This increase in gross margin included higher revenues from BGE of approximately $149 million during the six months ended June 30, 2007 compared to the same period of 2006. The increase in gross margin was partially offset by the following:

¨ the unfavorable impact of approximately $44 million related to losses recognized on cash-flow hedges due to ineffectiveness and certain cash-flow hedges that did not qualify for hedge accounting during the quarter, and

¨ absence of CTC revenue of $35.5 million.

Plants with Power Purchase Agreements

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues	$	162.3		$	150.9		$	313.5		$	303.3
Fuel and purchased energy expenses	(19.6		)	(19.1		)	(37.6		)	(34.8		)
Gross margin	$	142.7		$	131.8		$	275.9		$	268.5

Gross margin from our Plants with Power Purchase Agreements was slightly higher primarily due to greater output from our Ginna nuclear facility for the quarter and the six months ended June 30, 2007 compared to the same periods of 2006. During the fourth quarter of 2006, we completed a planned outage at Ginna, which included increasing the plant capacity from 498 megawatts to the current 581 megawatts.

Competitive Supply

Retail

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Accrual revenues	$	2,154.5		$	1,843.1		$	4,377.3		$	3,859.9
Fuel and purchased energy expenses	(2,065.5		)	(1,749.5		)	(4,165.9		)	(3,683.5		)
Retail accrual activities	89.0			93.6			211.4			176.4
Mark-to-market activities	(15.6		)	0.5			(20.0		)	(9.0		)
Gross margin	$	73.4		$	94.1		$	191.4		$	167.4

The decrease in accrual gross margin from our retail competitive supply activities during the quarter ended June 30, 2007 compared to the same period of 2006 is primarily due to the unfavorable impact of approximately $12 million related to losses recognized during the quarter ended June 30, 2007 on hedges due to ineffectiveness and certain hedges that did not qualify for hedge accounting. We discuss this in more detail on page 30. This unfavorable impact was mostly offset by approximately $7 million primarily related to the positive impact of higher volumes served at higher contract rates per megawatt hour and lower costs to serve load in our retail electric operations.

The increase in accrual gross margin from our retail competitive supply activities during the six months ended June 30, 2007 compared to the same period of 2006 is primarily due to the positive impact of higher volumes served at higher contract rates per megawatt hour and lower costs to serve load in our retail electric operations, which was partially offset by approximately $15 million related to losses recognized during the six months ended June 30, 2007 on hedges due to ineffectiveness and certain hedges that did not qualify for hedge accounting.

Wholesale

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Accrual revenues	$	1,263.7		$	1,144.5		$	2,751.7		$	2,467.7
Fuel and purchased energy expenses	(1,187.8		)	(1,088.9		)	(2,479.8		)	(2,304.2		)
Wholesale accrual activities	75.9			55.6			271.9			163.5
Mark-to-market revenues	66.8			105.4			24.0			202.7
Gross margin	$	142.7		$	161.0		$	295.9		$	366.2

Our wholesale marketing, risk management, and trading operation had higher accrual gross margin during the quarter ended June 30, 2007 compared to the same period of 2006 primarily due to approximately $49 million from new contracts executed during 2007, higher realized gross margin associated with existing contracts, and the favorable impact of higher energy prices. These increases in gross margin were partially offset by the recognition of approximately $29 million related to losses recognized on cash-flow hedges due to ineffectiveness and certain cash-flow hedges that did not qualify for hedge accounting during the quarter ended June 30, 2007. We discuss this in more detail on page 30.

Our wholesale marketing, risk management, and trading operation had higher accrual gross margin during the six months ended June 30, 2007 compared to the same period of 2006 primarily due to approximately $172 million from new contracts executed during 2007, higher realized gross margin associated with existing contracts, and the favorable impact of higher energy prices. These increases in gross margin were partially offset by the recognition of approximately $30 million related to losses recognized on cash-flow hedges due to ineffectiveness and certain cash-flow hedges that did not qualify for hedge accounting during the quarter ended June 30, 2007 and approximately $34 million in losses recorded during the quarter ended March 31, 2007 for amounts reclassified from “Accumulated other comprehensive loss” to earnings related to:

¨ as discussed in more detail in the Notes to Consolidated Financial Statements on page 12, as a result of the anticipated CEP equity issuance and subsequent deconsolidation, we determined that the hedged forecasted sales were probable of not occurring, which resulted in the reclassification of losses from “Accumulated other comprehensive loss” into earnings.

¨ as discussed in more detail on the next page, we amended certain nonderivative contracts such that the new contracts are accounted for as mark-to-market. This resulted in the recognition of losses from cash-flow hedges previously deferred in “Accumulated other comprehensive loss” due to the forecasted transaction affecting earnings.

Mark-to-Market

Mark-to-market results include net gains and losses from origination, trading, and risk management activities for which we use the mark-to-market method of accounting. We discuss these activities and the mark-to-market method of accounting in more detail in the Critical Accounting Policies section of our 2006 Annual Report on Form 10-K.

As a result of the nature of our operations and the use of mark-to-market accounting for certain activities, mark-to-market earnings will fluctuate. We cannot predict these fluctuations, but the impact on our earnings could be material. We discuss our market risk in more detail in the Market Risk section beginning on page 45. The primary factors that cause fluctuations in our mark-to-market results are:

¨ the number, size, and profitability of new transactions, including termination or restructuring of existing contracts,

¨ the number and size of our open derivative positions, and

¨ changes in the level and volatility of forward commodity prices and interest rates.

Mark-to-market results were as follows:

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Unrealized mark-to-market results
Origination gains	$	1.5		$	2.7		$	33.1		$	6.0
Risk management and trading—mark-to-market
Unrealized changes in fair value	49.7			103.2			(29.1		)	187.7
Changes in valuation techniques	—			—			—			—
Reclassification of settled contracts to realized	(18.9		)	(104.8		)	(61.2		)	(228.9		)
Total risk management and trading—mark-to-market	30.8			(1.6		)	(90.3		)	(41.2		)
Total unrealized mark-to-market*	32.3			1.1			(57.2		)	(35.2		)
Realized mark-to-market	18.9			104.8			61.2			228.9
Total mark-to-market results	$	51.2		$	105.9		$	4.0		$	193.7

* Total unrealized mark-to-market is the sum of origination gains and total risk management and trading—mark-to-market.

Origination gains arise primarily from contracts that our wholesale marketing, risk management, and trading operation structures to meet the risk management needs of our customers or relate to our trading activities. Transactions that result in origination gains may be unique and provide the potential for individually significant revenues and gains from a single transaction.

Origination gains represent the initial fair value recognized on these transactions. The recognition of origination gains is dependent on sufficient observable market data that validates the initial fair value of the contract. Liquidity and market conditions impact our ability to identify sufficient, objective market-price information to permit recognition of origination gains. As a result, while our strategy and competitive position provide the opportunity to continue to originate such transactions, the level of origination gains we are able to recognize may vary from period to period as a result of the number, size, and market-price transparency of the individual transactions executed in any period.

During the first six months of 2007, our wholesale marketing, risk management, and trading operation amended certain nonderivative power sales contracts such that the new contracts are derivatives subject to mark-to-market accounting under Statement of Financial Accounting Standards (SFAS) No. 133, Accounting for Derivative Instruments and Hedging Activities, as amended. Simultaneous with the amending of the nonderivative contracts, we executed at current market prices several new offsetting derivative power purchase contracts subject to mark-to-market accounting. The combination of these transactions resulted in substantially all of the origination gains presented for the first six months of 2007 in the table on the previous page, as well as mitigated our risk exposure under the amended contracts.

The origination gain from these transactions was partially offset by approximately $12 million of losses in our accrual portfolio due to the reclassification of losses related to cash-flow hedges previously established for the amended nonderivative contracts from “Accumulated other comprehensive loss” into earnings as discussed in our Competitive Supply-Wholesale Accrual section on the previous page. In the absence of these transactions, the origination gain and the losses associated with cash-flow hedges would have been recognized over the remaining term of the contracts, which extended through the first quarter of 2009.

Risk management and trading—mark-to-market represents both realized and unrealized gains and losses from changes in the value of our portfolio, including the recognition of gains associated with decreases in the close-out adjustment when we are able to obtain sufficient market price information. In addition, we use derivative contracts subject to mark-to-market accounting to manage our exposure to changes in market prices primarily as a result of our gas transportation and storage activities, while in general the underlying physical transactions related to our gas activities are accounted for on an accrual basis. We discuss the changes in mark-to-market results below. We show the relationship between our mark-to-market results and the change in our net mark-to-market energy asset later in this section.

Total mark-to-market results decreased $54.7 million during the quarter ended June 30, 2007 compared to the same period of 2006 mostly because of a decrease in unrealized changes in fair value, which resulted from lower gains on open positions being recorded during the second quarter of 2007 compared to the same period of 2006. The decrease in fair value was primarily due to a less favorable price environment during the second quarter of 2007 compared to the same period of 2006.

Total mark-to-market results decreased $189.7 million during the six months ended June 30, 2007 compared to the same period of 2006 mostly because of a decrease in unrealized changes in fair value, partially offset by the increase in origination gains previously discussed. Unrealized changes in fair value decreased $216.8 million primarily due to losses on open positions resulting from an unfavorable price environment, which was partially offset by a $21.1 million favorable impact related to changes in the close-out adjustment during the six months ended June 30, 2007 compared to the same period of 2006.

The close-out adjustments are determined by the change in open positions, new transactions where we did not have observable market price information, and existing transactions where we have now observed sufficient market price information and/or we realized cash flows since the transactions’ inception. We discuss the close-out adjustment in more detail in the Critical Accounting Policies section of our 2006 Annual Report on Form 10-K.

Mark-to-Market Energy Assets and Liabilities

Our mark-to-market energy assets and liabilities are comprised of derivative contracts subject to mark-to-market accounting and consisted of the following:

	June 30, 2007		December 31, 2006
	*(In millions)*
Current Assets	$	953.5		$	1,294.8
Noncurrent Assets	755.8			623.4
Total Assets	1,709.3			1,918.2
Current Liabilities	728.6			1,071.7
Noncurrent Liabilities	448.2			392.4
Total Liabilities	1,176.8			1,464.1
Net mark-to-market energy asset	$	532.5		$	454.1

The following are the primary sources of the change in the net mark-to-market energy asset during the quarter and six months ended June 30, 2007:

	Quarter Ended June 30, 2007							Six Months Ended June 30, 2007
	*(in millions)*
Fair value beginning of period					$	341.8					$	454.1
Changes in fair value recorded in earnings
Origination gains		$	1.5					$	33.1
Unrealized changes in fair value		49.7						(29.1		)
Changes in valuation techniques		—						—
Reclassification of settled contracts to realized		(18.9		)				(61.2		)
Total changes in fair value recorded as revenues					32.3						(57.2		)
Changes in value of exchange-listed futures and options					40.0						8.6
Net change in premiums on options					41.0						87.9
Contracts acquired					114.1						93.6
Other changes in fair value					(36.7		)				(54.5		)
Fair value at end of period					$	532.5					$	532.5

Changes in the net mark-to-market energy asset that affected earnings were as follows:

¨ Origination gains represent the initial unrealized fair value at the time these contracts are executed to the extent permitted by applicable accounting rules.

¨ Unrealized changes in fair value represent unrealized changes in commodity prices, the volatility of options on commodities, the time value of options, and other valuation adjustments.

¨ Changes in valuation techniques represent improvements in estimation techniques, including modeling and other statistical enhancements used to value our portfolio to more accurately reflect the fair value of our contracts.

¨ Reclassification of settled contracts to realized represent the portion of previously unrealized amounts settled during the period and recorded as realized revenues.

The net mark-to-market energy asset also changed due to the following items recorded in accounts other than in our Consolidated Statements of Income:

¨ Changes in value of exchange-listed futures and options are adjustments to remove unrealized revenue from exchange-traded contracts that are included in risk management revenues. The fair value of these contracts is recorded in “Accounts receivable” rather than “Mark-to-market energy assets” in our Consolidated Balance Sheets because these amounts are settled through our margin account with a third-party broker.

¨ Net changes in premiums on options reflects the accounting for premiums on options purchased as an increase in the net mark-to-market energy asset and premiums on options sold as a decrease in the net mark-to-market energy asset.

¨ Contracts acquired represents the initial fair value of acquired derivative contracts recorded in “Mark-to-market energy assets and liabilities” in our Consolidated Balance Sheets.

¨ Other changes in fair value include transfers between mark-to-market energy assets and liabilities and risk management assets and liabilities resulting from the designation and de-designation of cash-flow hedges.

We manage our mark-to-market risk on a portfolio basis based upon the delivery period of our contracts and the individual components of the risks within each contract. Accordingly, we record and manage the energy purchase and sale obligations under our contracts in separate components based upon the commodity (e.g., electricity or gas), the product (e.g., electricity for delivery during peak or off-peak hours), the delivery location (e.g., by region), the risk profile (e.g., forward or option), and the delivery period (e.g., by month and year).

Consistent with our risk management practices, we have presented the information in the table on the previous page based upon the ability to obtain reliable prices for components of the risks in our contracts from external price sources rather than on a contract-by-contract basis. Thus, the portion of long-term contracts that is valued using external price sources is presented under the caption “prices provided by external sources.” This is consistent with how we manage our risk, and we believe it provides the best indication of the basis for the valuation of our portfolio. Since we manage our risk on a portfolio basis rather than contract-by-contract, it is not practicable to determine separately the portion of long-term contracts that is included in each valuation category. We describe the commodities, products, and delivery periods included in each valuation category in detail below.

The amounts for which fair value is determined using prices provided by external sources represent the portion of forward, swap, and option contracts for which price quotations are available through brokers or over-the-counter transactions. The term for which such price information is available varies by commodity, region, and product. The fair values included in this category are the following portions of our contracts:

¨ forward and swap purchases and sales of electricity during peak and off-peak hours for delivery terms primarily through 2010, but up to 2012, depending upon the region,

¨ options for the purchase and sale of electricity during peak hours for delivery terms through 2008, depending upon the region,

¨ forward purchases and sales of electric capacity for delivery terms primarily through 2007, but up to 2008, depending upon the region,

¨ forward and swap purchases and sales of natural gas, coal, and oil for delivery terms primarily through 2011, and

¨ options for the purchase and sale of natural gas, coal, and oil for delivery terms through 2008.

The remainder of the net mark-to-market energy asset is valued using models. The portion of contracts for which such techniques are used includes standard products for which external prices are not available and customized products that are valued using modeling techniques to determine expected future market prices, contract quantities, or both.

Modeling techniques include estimating the present value of cash flows based upon underlying contractual terms and incorporate, where appropriate, option pricing models and statistical and simulation procedures. Inputs to the models include:

¨ observable market prices,

¨ estimated market prices in the absence of quoted market prices,

¨ the risk-free market discount rate,

¨ volatility factors,

¨ estimated correlation of energy commodity prices, and

¨ expected generation profiles of specific regions.

Additionally, we incorporate counterparty-specific credit quality and factors for market price and volatility uncertainty and other risks in our valuation. The inputs and factors used to determine fair value reflect management’s best estimates.

The electricity, fuel, and other contracts we hold have varying terms to maturity, ranging from contracts for delivery the next hour to contracts with terms of ten years or more. Because an active, liquid electricity futures market comparable to that for other commodities has not developed, the majority of contracts used in the wholesale marketing, risk management, and trading operation are direct contracts between market participants and are not exchange-traded or financially settling contracts that can be readily liquidated in their entirety through an exchange or other market mechanism. Consequently, we and other market participants generally realize the value of these contracts as cash flows become due or payable under the terms of the contracts rather than through selling or liquidating the contracts themselves.

Consistent with our risk management practices, the amounts shown in the table on the previous page as being valued using prices from external sources include the portion of long-term contracts for which we can obtain reliable prices from external sources. The remaining portions of these long-term contracts are shown in the table as being valued using models. In order to realize the entire value of a long-term contract in a single transaction, we would need to sell or assign the entire contract. If we were to sell or assign any of our long-term contracts in their entirety, we may not realize the entire value reflected in the table. However, based upon the nature of the wholesale marketing, risk management, and trading operation, we expect to realize the value of these contracts, as well as any contracts we may enter into in the future to manage our risk, over time as the contracts and related hedges settle in accordance with their terms. Generally, we do not expect to realize the value of these contracts and related hedges by selling or assigning the contracts themselves in total.

The fair values in the table represent expected future cash flows based on the level of forward prices and volatility factors as of June 30, 2007 and could change significantly as a result of future changes in these factors. Additionally, because the depth and liquidity of the power markets varies substantially between regions and time periods, the prices used to determine fair value could be affected significantly by the volume of transactions executed.

Management uses its best estimates to determine the fair value of commodity and derivative contracts it holds and sells. These estimates consider various factors including closing exchange and over-the-counter price quotations, time value, volatility factors, and credit exposure. However, future market prices and actual quantities will vary from those used in recording mark-to-market energy assets and liabilities, and it is possible that such variations could be material.

In 2006, the Financial Accounting Standards Board issued SFAS No. 157, Fair Value Measurements, that will impact our accounting for derivative instruments. We discuss this in more detail in Note 1 of our 2006 Annual Report on Form 10-K.

Risk Management Assets and Liabilities

We record derivatives that qualify for designation as hedges under SFAS No. 133 in “Risk management assets and liabilities” in our Consolidated Balance Sheets. Our risk management assets and liabilities consisted of the following:

	June 30, 2007			December 31, 2006
	*(In millions)*
Current Assets	$	189.9			$	261.7
Noncurrent Assets	439.1				325.7
Total Assets	629.0				587.4
Current Liabilities	815.7				1,340.0
Noncurrent Liabilities	711.7				707.3
Total Liabilities	1,527.4				2,047.3
Net risk management liability	$	(898.4	)		$	(1,459.9	)

The decrease in our net risk management liability since December 31, 2006 of $561.5 million was due primarily to increases in power prices that increased the fair value of our cash-flow hedge positions, the settlement of cash-flow hedges during the six months ended June 30, 2007, and approximately $167 million of net cash-flow hedge assets acquired as part of a contract and portfolio acquisition in June 2007. We discuss this contract and portfolio acquisition in more detail in the Notes to Consolidated Financial Statements beginning on page 13.

Other

Quarter Ended
June 30,

Six Months Ended
June 30,

2007

2006

2007

2006

(In millions)

Revenues

3.9

9.6

24.5

30.4

Our merchant energy business holds up to a 50% voting interest in 24 operating domestic energy projects that consist of electric generation, fuel processing, or fuel handling facilities. Of these 24 projects, 17 are “qualifying facilities” that receive certain exemptions and pricing under the Public Utility Regulatory Policy Act of 1978 based on the facilities’ energy source or the use of a cogeneration process.

We believe the current market conditions for our equity-method investments that own geothermal, coal, hydroelectric, and fuel processing projects provide sufficient positive cash flows to recover our investments. We continuously monitor issues that potentially could impact future profitability of these investments, including environmental and legislative initiatives. We discuss the impact of subsidies from the State of California in more detail in the Merchant Energy Business—Other section in our 2006 Annual Report on Form 10-K.

We discuss certain risks and uncertainties in more detail in the Forward Looking Statements section on page 50 and in Item 1A. Risk Factors section on page 49. However, should future events cause these investments to become uneconomic, our investments in these projects could become impaired under the provisions of Accounting Principles Board Opinion (APB) No. 18, The Equity Method of Accounting for Investments in Common Stock.

Operating Expenses

Our merchant energy business operating expenses increased $15.0 million during the quarter ended June 30, 2007 compared to the same period of 2006 mostly due to the following:

¨ an increase at our retail competitive supply operation totaling $10.3 million primarily related to the continued growth of this operation, and

¨ an increase of $4.7 million due to the growth in our upstream gas activities.

Our merchant energy business operating expenses increased $72.9 million during the six months ended June 30, 2007 compared to the same period of 2006 mostly due to the following:

¨ an increase at our competitive supply operations totaling $42.8 million primarily related to the continued growth of this operation and higher compensation and benefit costs,

¨ an increase of $6.8 million due to the growth in business activities related to new nuclear development, and

¨ an increase of $6.4 million due to the growth in our upstream gas activities.

Impairment Losses and Other Costs

During the quarter ended June 30, 2007, our merchant energy business recorded a $20.2 million charge associated with a cancelled wind development project. We discuss the charge in more detail in the Notes to Consolidated Financial Statements on page 12.

Workforce Reduction Costs

During the quarter ended June 30, 2007, our merchant energy business recognized expenses of $2.3 million associated with our workforce reduction efforts at our Nine Mile Point nuclear facility. We discuss the workforce reduction in more detail in the Notes to Consolidated Financial Statements on page 12.

Taxes Other Than Income Taxes

Taxes other than income taxes decreased $3.7 million during the six months ended June 30, 2007 compared to the same period of 2006 primarily due to $2.9 million lower gross receipts tax at our retail competitive supply operation and a $2.1 million decrease due to the sale of our gas-fired plants. These decreases are partially offset by an increase of $1.1 million due to growth of our upstream gas business.

Regulated Electric Business

Our regulated electric business is discussed in detail in Item 1. Business—Electric Business section of our 2006 Annual Report on Form 10-K.

Results

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues	$	544.3		$	498.7		$	1,059.1		$	1,002.7
Electricity purchased for resale expenses	(320.9		)	(279.8		)	(595.1		)	(542.7		)
Operations and maintenance expenses	(91.9		)	(85.2		)	(178.2		)	(169.6		)
Merger-related costs	—			(1.3		)	—			(1.7		)
Depreciation and amortization	(46.8		)	(45.7		)	(93.7		)	(91.5		)
Taxes other than income taxes	(34.5		)	(32.8		)	(69.7		)	(66.8		)
Income from Operations	$	50.2		$	53.9		$	122.4		$	130.4
Net Income	$	19.4		$	19.9		$	51.6		$	53.5
Other Items Included in Operations (after-tax):
Merger-related costs	$	—		$	(1.2	)	$	—		$	(1.5	)

Above amounts include intercompany transactions eliminated in our Consolidated Financial Statements. The Information by Operating Segment section within the Notes to Consolidated Financial Statements on page 14 provides a reconciliation of operating results by segment to our Consolidated Financial Statements.

Electric Revenues

The changes in electric revenues in 2007 compared to 2006 were caused by:

	Quarter Ended June 30, 2007 vs. 2006				Six Months Ended June 30, 2007 vs. 2006
	*(In millions)*
Distribution volumes		$	2.8			$	4.8
Standard offer service		125.6				327.7
Rate stabilization credits		(88.5		)		(280.8		)
Rate stabilization recovery		4.6				4.6
Senate Bill 1 credits		(5.8		)		(11.0		)
Total change in electric revenues from electric system sales		38.7				45.3
Other		6.9				11.1
Total change in electric revenues		$	45.6			$	56.4

Distribution Volumes

Distribution volumes are the amount of electricity that BGE delivers to customers in its service territory.

The percentage changes in our distribution volumes, by type of customer, in 2007 compared to 2006 were:

	Quarter Ended June 30, 2007 vs. 2006			Six Months Ended June 30, 2007 vs. 2006
Residential		6.4	%		8.4	%
Commercial		6.0			4.9
Industrial		(3.5	)		(5.0	)

During the quarter ended June 30, 2007 compared to the same period of 2006, we distributed more electricity to residential customers mostly due to warmer weather and an increased number of customers, partially offset by decreased usage per customer. We distributed more electricity to commercial customers due to increased usage per customer, warmer weather, and an increased number of customers. We distributed less electricity to industrial customers primarily due to decreased usage per customer, partially offset by an increased number of customers.

During the six months ended June 30, 2007 compared to the same period of 2006, we distributed more electricity to residential and commercial customers due to increased usage per customer, warmer weather, and an increased number of customers. We distributed less electricity to industrial customers primarily due to decreased usage per customer, partially offset by an increased number of customers.

Standard Offer Service

BGE provides standard offer service for customers that do not select an alternative supplier. We discuss the provisions of Senate Bill 1 related to residential electric rates in the Item 1. Business—Electric Regulatory Matters and Competition section of our 2006 Annual Report on Form 10-K and recent developments related to residential electric rates in the Regulation by the Maryland PSC section beginning on page 24.

Standard offer service revenues increased during the quarter and six months ended June 30, 2007 compared to the same periods of 2006 mostly due to an increase in the standard offer service rates following the expiration of the residential rate freeze in July 2006, partially offset by lower standard offer service volumes mostly due to commercial and industrial customers that switched to an alternate supplier.

Rate Stabilization Credits

As a result of Senate Bill 1, we were required to defer from July 1, 2006 until May 31, 2007 a portion of the full market rate increase resulting from the expiration of the residential rate freeze. In addition, we offered a plan allowing residential customers the option to defer the transition to market rates from June 1, 2007 until January 1, 2008. Based on the number of customers electing to defer the transition to market rates from June 1, 2007 until January 1, 2008, the total amount deferred under this plan is expected to be approximately $6 million.

The increase in standard offer service revenues is mostly offset by the rate stabilization credits provided to residential electric customers in order to reduce market rates as required by Senate Bill 1.

Rate Stabilization Recovery

Recovery of the amounts deferred under the rate stabilization plan that ended on May 31, 2007 began in late June 2007.

Senate Bill 1 Credits

As a result of Senate Bill 1, beginning January 1, 2007, we were required to provide to residential electric customers a credit equal to the amount collected from all BGE ratepayers for the decommissioning of our Calvert Cliffs nuclear power plant and to suspend collection of the residential return component of the of the Provider of Last Resort (POLR) administrative charge collected through residential POLR rates through May 31, 2007. However, under the plan approved by the Maryland PSC in May 2007, as of June 1, 2007, we were required to provide all residential electric customers a credit for the residential return component of the administrative charge.

Electricity Purchased for Resale Expenses

Electricity purchased for resale expenses include the cost of electricity purchased for resale to our standard offer service customers. These costs do not include the cost of electricity purchased by delivery service only customers.

	Quarter Ended June 30,					Six Months Ended June 30,
	2007			2006		2007			2006
	*(In millions)*
Actual costs	$	404.8		$	279.8	$	871.3		$	542.7
Deferral under rate stabilization plans	(88.5		)	—		(280.8		)	—
Recovery under rate stabilization plans	4.6			—		4.6			—
Electricity purchased for resale	$	320.9		$	279.8	595.1			$	542.7

Actual Costs

BGE’s actual costs for electricity purchased for resale increased $125.0 million during the quarter ended June 30, 2007 and $328.6 million for the six months ended June 30, 2007 compared to the same periods of 2006 primarily due to higher contract prices to purchase electricity for our residential customers following the expiration of contracts that were executed in 2000 as part of the implementation of electric deregulation in Maryland, partially offset by lower volumes mostly due to commercial and industrial customers that switched to an alternate supplier.

Deferral under Rate Stabilization Plans

We defer the difference between our actual costs of electricity purchased for resale and what we are allowed to bill customers under Senate Bill 1. During the quarter ended June 30, 2007, we deferred $88.5 million and during the six months ended June 30, 2007, we deferred $280.8 million in electricity purchased for resale expenses. Since July 1, 2006, we have deferred $602.7 million in electricity purchased for resale expenses. These deferred expenses, plus carrying charges, are included in “Regulatory Assets (net)” in our, and BGE’s, Consolidated Balance Sheets.

Recovery under Rate Stabilization Plans

In late June 2007, we began recovering previously deferred amounts from customers. During the quarter and six months ended June 30, 2007, we recovered $4.6 million in deferred electricity purchased for resale expenses. As discussed in Available Sources of Funding section on page 43, these collections secure the payment of principal and interest and other ongoing costs associated with rate stabilization bonds issued by a subsidiary of BGE in June 2007.

Electric Operations and Maintenance Expenses

Regulated operations and maintenance expenses increased $6.7 million in the quarter and $8.6 million in the six months ended June 30, 2007 compared to the same periods in 2006 mostly due to higher labor and benefit costs and the impact of inflation on other costs.

Regulated Gas Business

Our regulated gas business is discussed in detail in Item 1. Business—Gas Business section of our 2006 Annual Report on Form 10-K.

Results

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Gas revenues	$	162.8		$	143.6		$	570.1		$	563.8
Gas purchased for resale expenses	(102.9		)	(83.8		)	(387.0		)	(382.2		)
Operations and maintenance expenses	(39.4		)	(35.1		)	(76.2		)	(70.7		)
Merger-related costs	—			(0.6		)	—			(0.8		)
Depreciation and amortization	(11.7		)	(11.5		)	(23.7		)	(23.4		)
Taxes other than income taxes	(8.5		)	(8.0		)	(19.1		)	(17.5		)
Income from operations	$	0.3		$	4.6		$	64.1		$	69.2
Net (Loss) Income	$	(5.7	)	$	(1.4	)	$	28.0		$	33.6
Other Items Included in Operations (after-tax):
Merger-related costs	$	—		$	(0.4	)	$	—		$	(0.6	)

Net loss from the regulated gas business increased $4.3 million during the quarter ended June 30, 2007 compared to the same period of 2006 mostly due to increased operations and maintenance expenses of $2.6 million after-tax. Net income from the regulated gas business decreased $5.6 million during the six months ended June 30, 2007 compared to the same period of 2006 primarily due to increased operations and maintenance expenses of $3.4 million after-tax.

Gas Revenues

The changes in gas revenues in 2007 compared to 2006 were caused by:

	Quarter Ended June 30, 2007 vs. 2006				Six Months Ended June 30, 2007 vs. 2006
	*(In millions)*
Distribution volumes		$	4.0			$	15.1
Revenue decoupling		(4.3		)		(16.4		)
Gas cost adjustments		18.4				33.0
Total change in gas revenues from gas system sales		18.1				31.7
Off-system sales		1.3				(24.5		)
Other		(0.2		)		(0.9		)
Total change in gas revenues		$	19.2			$	6.3

Distribution Volumes

The percentage changes in our distribution volumes, by type of customer, in 2007 compared to 2006 were:

	Quarter Ended June 30, 2007 vs. 2006			Six Months Ended June 30, 2007 vs. 2006
Residential		21.4	%		21.4	%
Commercial		22.9			19.2
Industrial		(15.7	)		(21.0	)

During the quarter ended June 30, 2007 compared to the same period in 2006, we distributed more gas to residential customers due to colder weather and an increased number of customers, partially offset by decreased usage per customer. We distributed more gas to commercial customers compared to the same period of 2006 mostly due to an increased number of customers and colder weather, partially offset by decreased usage per customer. We distributed less gas to industrial customers mostly due to decreased usage per customer.

During the six months ended June 30, 2007 compared to the same period in 2006, we distributed more gas to residential customers due to colder weather, increased usage per customer and an increased number of customers. We distributed more gas to commercial customers due to an increased number of customers and colder weather, partially offset by decreased usage per customer. We distributed less gas to industrial customers mostly due to decreased usage per customer.

Revenue Decoupling

The Maryland PSC allows us to record a monthly adjustment to our gas distribution revenues to eliminate the effect of abnormal weather patterns on our gas distribution volumes. This means our monthly gas base rate revenues are based on weather that is considered “normal” for the month and, therefore, are not affected by actual weather conditions.

Gas Cost Adjustments

We charge our gas customers for the natural gas they purchase from us using gas cost adjustment clauses set by the Maryland PSC as described in Note 1 of our 2006 Annual Report on Form 10-K.

Gas cost adjustment revenues increased $18.4 million during the quarter ended June 30, 2007 compared to the same period of 2006 because we sold more gas at higher prices.

Gas cost adjustment revenues increased $33.0 million during the six months ended June 30, 2007 compared to the same period of 2006 because we sold more gas, partially offset by lower prices.

Off-System Gas Sales

Off-system gas sales are low-margin direct sales of gas to wholesale suppliers of natural gas. Off-system gas sales, which occur after we have satisfied our customers’ demand, are not subject to gas cost adjustments. The Maryland PSC approved an arrangement for part of the margin from off-

system sales to benefit customers (through reduced costs) and the remainder to be retained by BGE (which benefits shareholders). Changes in off-system sales do not significantly impact earnings.

Revenues from off-system gas sales increased during the quarter ended June 30, 2007 compared to the same period of 2006 because we sold gas at higher prices, partially offset by lower sales.

Revenues from off-system gas sales decreased during the six months ended June 30, 2007 compared to the same period of 2006 because we sold less gas at lower prices.

Gas Purchased For Resale Expenses

Gas purchased for resale expenses include the cost of gas purchased for resale to our customers and for off-system sales. These costs do not include the cost of gas purchased by delivery service only customers.

Gas costs increased $19.1 million during the quarter ended June 30, 2007 compared to the same period of 2006 because we purchased more gas at higher prices.

Gas costs increased $4.8 million during the six months ended June 30, 2007 compared to the same period of 2006 because we purchased more gas, partially offset by lower prices.

Gas Operations and Maintenance Expenses

Regulated operations and maintenance expenses increased $4.3 million in the quarter and $5.5 million in the six months ended June 30, 2007 compared to the same periods in 2006 mostly due to higher labor and benefit costs and the impact of inflation on other costs.

Other Nonregulated Businesses

Results

	Quarter Ended June 30,						Six Months Ended June 30,
	2007			2006			2007			2006
	*(In millions)*
Revenues	$	44.8		$	62.9		$	119.5		$	123.8
Operating expense	(25.9		)	(46.9		)	(73.1		)	(95.3		)
Merger-related costs	—			(0.2		)	—			(0.2		)
Depreciation and amortization	(16.4		)	(9.5		)	(27.0		)	(17.9		)
Taxes other than income taxes	(0.7		)	(0.6		)	(1.3		)	(1.2		)
Income from Operations	$	1.8		$	5.7		$	18.1		$	9.2
Income from continuing operations (after-tax)	$	0.4		$	2.9		$	10.2		$	3.7
Income from discontinued operations (after-tax)	—			—			—			0.9
Net Income	$	0.4		$	2.9		$	10.2		$	4.6
Other Items Included in Operations (after-tax):
Merger-related costs	$	—		$	(0.2	)	$	—		$	(0.2	)

Net income increased during the six months ended June 30, 2007 compared to the same periods of 2006 mostly due to the monetization of certain leasing arrangements that resulted in the cancellation of the leases.

As previously discussed in our 2006 Annual Report on Form 10-K, we decided to sell certain non-core assets and accelerate the exit strategies on other assets that we will continue to hold and own over the next several years. While our intent is to dispose of these assets, market conditions and other events beyond our control may affect the actual sale of these assets. In addition, a future decline in the fair value of these assets could result in additional losses.

Consolidated Nonoperating Income and Expenses

Gains on Sale of CEP LLC Equity

In the second quarter of 2007, CEP sold additional equity in a private placement. As a result of the sale of additional equity of CEP, we recognized pre-tax gains totaling $12.9 million during the quarter and six months ended June 30, 2007. We discuss the additional equity offerings in the Notes to Consolidated Financial Statements beginning on page 12.

Other Income

Other income increased during the quarter and six months ended June 30, 2007 compared to the same periods of 2006 mostly because of higher interest and investment income due to a higher cash balance.

Total other income at BGE increased during the quarter and six months ended June 30, 2007 compared to the same periods of 2006 primarily due to carrying charges related to rate stabilization credits. We discuss the rate stabilization credits in more detail in the Regulated Electric section.

Fixed Charges

Fixed charges decreased during the quarter and six months ended June 30, 2007 compared to the same periods of 2006 mostly due to a lower level of debt outstanding.

Fixed charges at BGE increased during the quarter and six months ended June 30, 2007 compared to the same periods of 2006 mostly due to interest expense recognized on debt that was issued in October 2006.

Income Taxes

Our income taxes decreased $13.5 million during the quarter ended June 30, 2007 compared to the same period of 2006 mostly because of a $22.1 million increase in synthetic fuel tax credits. We discuss synthetic fuel tax credits in more detail in the Notes to Consolidated Financial Statements beginning on page 16.

Our income taxes increased $14.7 million during the six months ended June 30, 2007 compared to the same period of 2006 mostly because of an increase in pre-tax income. This was partially offset by an increase in synthetic fuel tax credits of $39.7 million.

Financial Condition

Cash Flows

The following table summarizes our cash flows for 2007 and 2006, excluding the impact of changes in intercompany balances.

	2007 Segment Cash Flows										Consolidated Cash Flows
	Six Months Ended June 30, 2007										Six Months Ended June 30,
	Merchant			Regulated				Other			2007			2006
	*(In millions)*
Operating Activities
Net income	$	222.2			$	79.6		$	10.2		$	312.0		$	207.0
Non-cash adjustments to net income	135.0				(52.1		)	28.0			110.9			281.4
Changes in working capital	133.1				(25.8		)	(41.2		)	66.1			(908.6		)
Defined benefit obligations*	—				—			—			(73.4		)	(5.0		)
Other	(3.1		)		(8.0		)	5.6			(5.5		)	5.9
Net cash provided by (used in) operating activities	487.2				(6.3		)	2.6			410.1			(419.3		)
Investing Activities
Investments in property, plant and equipment	(377.9		)		(183.4		)	(2.8		)	(564.1		)	(414.4		)
Acquisitions, net of cash acquired	(250.6		)		—			—			(250.6		)	(126.2		)
Contributions to nuclear decommissioning trust funds	(8.8		)		—			—			(8.8		)	(8.8		)
Sales of investments and other assets	4.0				—			0.7			4.7			43.1
Contract and portfolio acquisitions	(474.2		)		—			—			(474.2		)	(2.3		)
Other	3.5				(3.1		)	(1.0		)	(0.6		)	8.3
Net cash used in investing activities	(1,104.0		)		(186.5		)	(3.1		)	(1,293.6		)	(500.3		)
Cash flows from operating activities less cash flows from investing activities	$	(616.8	)		$	(192.8	)	$	(0.5	)	(883.5		)	(919.6		)
Financing Activities*
Net (repayment) issuance of debt											(88.5		)	153.3
Proceeds from issuance of common stock											39.2			40.8
Common stock dividends paid											(147.6		)	(127.7		)
Reacquisition of common stock											(114.4		)	—
Proceeds from contract and portfolio acquisitions											847.8			221.3
Other											25.9			47.0
Net cash provided by financing activities											562.4			334.7
Net Decrease in Cash and Cash Equivalents											$	(321.1	)	$	(584.9	)

*Items are not allocated to the business segments because they are managed for the company as a whole.

Certain prior-period amounts have been reclassified to conform to the current period presentation.

Cash Flows from Operating Activities

Cash provided by operating activities was $410.1 million in 2007 compared to cash used in operating activities of $419.3 million in 2006. This $829.4 million increase was primarily due to favorable changes in working capital.

Changes in working capital had a positive impact of $66.1 million on cash flow from operations in 2007 compared to a negative impact of $908.6 million in 2006. The net increase of $974.7 million was primarily due to cash changes related to our collateral positions, which is impacted by commodity price volatility and increased risk management and trading activities. During the six months ended June 30, 2007, we received approximately $279 million in cash due to a decrease in collateral requirements, compared to the same period of 2006, when we posted cash collateral of approximately $570 million.

This favorable increase from working capital changes was partially offset by a pension contribution that was $73 million higher in 2007 compared to the same period of 2006.

Cash Flows from Investing Activities

Cash used in investing activities was $1,293.6 million in 2007 compared to $500.3 million in 2006. The $793.3 million increase in cash used in 2007 compared to 2006 was primarily due to the following:

¨ a $471.9 million increase in contract and portfolio acquisitions that we discuss in more detail on the next page,

¨ a $149.7 million increase in investments in property, plant and equipment, which includes spending related to environmental controls at our generating facilities, and

¨ a $124.4 million increase in acquisitions, primarily related to our acquisition of working interests in gas and oil producing properties as discussed in more detail in the Notes to Consolidated Financial Statements on page 13.

Cash Flows from Financing Activities

Cash provided by financing activities was $562.4 million in 2007 compared to $334.7 million in 2006. The increase of $227.7 million was primarily due to an increase in proceeds from contract and portfolio acquisitions of $626.5 million, which we discuss below. This was partially offset by a net decrease in cash related to changes in short-term borrowings and long-term debt of $241.8 million, cash used for reacquisition of common stock of $114.4 million, and a $19.9 million increase in our dividends paid in 2007 compared to 2006.

Contract and Portfolio Acquisitions

During 2007 and 2006 our merchant energy business acquired pre-existing power-related agreements, which generated significant cash flows at the inception of the agreements. These agreements had contract prices that differed from market prices at closing, which resulted in cash payments from the counterparty at the acquisition of the contracts.

We received net cash of $373.6 million during the six months ended June 30, 2007 and $219.0 million during the same period of 2006 for various contract and portfolio acquisitions. We reflect the underlying contracts on a gross basis as assets or liabilities in our Consolidated Balance Sheets depending on whether they were in-the-money or out-of-the-money at closing; therefore, we have also reflected them on a gross basis in cash flows from investing and financing activities in our Consolidated Statements of Cash Flows as follows:

*Six Months Ended June 30,*	2007			2006
	*(In millions)*
Financing activities—proceeds from contract and portfolio acquisitions	$	847.8		$	221.3
Investing activities—contract and portfolio acquisitions	(474.2		)	(2.3		)
Cash flows from contract and portfolio acquisitions	$	373.6		$	219.0

We record the proceeds we receive to acquire energy purchase and sale agreements as a financing cash inflow because it constitutes a prepayment for a portion of the market price of energy, which we will buy or sell over the term of the agreements and does not represent a cash inflow from current period operating activities. For those acquired contracts that are derivatives, we record the ongoing cash flows related to the contract with the counterparties as financing cash inflows in accordance with SFAS No. 149, Amendment of Statement 133 on Derivative Instruments and Hedging Activities. For those acquired contracts that are not derivatives, we record the ongoing cash flows related to the contract as operating cash flows.

Security Ratings

In June 2007, in connection with BondCo.’s issuance of rate stabilization bonds, the rating agencies took the following actions:

¨ Standard and Poor’s Rating Group and Fitch Ratings issued AAA ratings for the bonds, and

¨ Moody’s Investors Service issued an Aaa rating for the bonds.

We discuss the issuance of the rate stabilization bonds in more detail in the section below.

Available Sources of Funding

We continuously monitor our liquidity requirements and believe that our facilities and access to the capital markets provide sufficient liquidity to meet our business requirements. We discuss our available sources of funding in more detail below.

Constellation Energy

Constellation Energy had committed bank lines of credit under credit facilities of $4.55 billion at June 30, 2007 for short-term financial needs. We discuss these credit facilities in more detail in Note 8 of our 2006 Annual Report on Form 10-K. At June 30, 2007, these facilities can issue letters of credit up to approximately $4.05 billion. Letters of credit issued under all of our facilities totaled $1.5 billion at June 30, 2007.

In connection with the acquisition of coalbed methane properties discussed beginning on page 12, we deconsolidated CEP and began accounting for our investment using the equity method of accounting under APB No. 18. As a result, the $32.0 million of borrowings outstanding under the CEP credit facility at the time of deconsolidation are no longer included in our Consolidated Balance Sheets.

In July 2007, we announced a joint venture, UniStar Nuclear Energy, LLC (UniStar) with an affiliate of Electricite de France (EDF). The agreement with EDF includes a phased-in investment of $625 million by EDF in UniStar. We discuss this joint venture in more detail in the Notes to Consolidated Financial Statements on page 14.

BGE

BGE currently maintains a $400.0 million five-year revolving credit facility expiring in 2011. BGE can borrow directly from the banks, use the facilities to allow commercial paper to be issued, or issue letters of credit. As of June 30, 2007, BGE had $0.6 million in letters of credit issued, which results in $399.4 million in unused credit facilities.

In June 2007, BondCo, a subsidiary of BGE, issued an aggregate principal amount of $623.2 million of rate stabilization bonds to recover deferred power purchase costs. We discuss BondCo in more detail in the Notes to Consolidated Financial Statements on page 11. Below are the details of the rate stabilization bonds:

Principal	Interest Rate			Scheduled Maturity Date
$284.0		5.47	%	October 2012
220.0		5.72		April 2016
119.2		5.82		April 2017

Capital Resources

Our estimated annual amounts for the years 2007 and 2008 are shown in the table below.

We will continue to have cash requirements for:

¨ working capital needs,

¨ payments of interest, distributions, and dividends,

¨ capital expenditures, and

¨ the retirement of debt and redemption of preference stock.

Capital requirements for 2007 and 2008 include estimates of spending for existing and anticipated projects. We continuously review and modify those estimates. Actual requirements may vary from the estimates included in the table below because of a number of factors including:

¨ regulation, legislation, and competition,

¨ BGE load requirements,

¨ environmental protection standards,

¨ the type and number of projects selected for construction or acquisition,

¨ the effect of market conditions on those projects,

¨ the cost and availability of capital,

¨ the availability of cash from operations, and

¨ business decisions to invest in capital projects.

Our estimates are also subject to additional factors. Please see the Forward Looking Statements section on page 50 and Item 1A. Risk Factors section on page 49. We discuss the potential impact of environmental legislation and regulation in more detail in Business Environment section beginning on page 24 and Item 1. Business—Environmental Matters section of our 2006 Annual Report on Form 10-K.

Calendar Year Estimates	2007		2008
	*(In millions)*
Nonregulated Capital Requirements:
Merchant energy
Generation plants	$	200	$	310
Nuclear fuel	150		210
Environmental controls	195		565
Portfolio acquisitions/investments	550		210
Technology/other	245		140
Total merchant energy capital requirements	1,340		1,435
Other nonregulated capital requirements	20		10
Total nonregulated capital requirements	1,360		1,445
Regulated Capital Requirements:
Regulated electric	380		380
Regulated gas	65		75
Total regulated capital requirements	445		455
Total capital requirements	$	1,805	$	1,900

Capital Requirements

Merchant Energy Business

Our merchant energy business’ capital requirements consist of its continuing requirements, including expenditures for:

¨ improvements to generating plants,

¨ nuclear fuel costs,

¨ upstream gas investments,

¨ portfolio acquisitions and other investments,

¨ costs of complying with the EPA, Maryland, and Pennsylvania environmental regulations and legislation, and

¨ enhancements to our information technology infrastructure.

Regulated Electric and Gas

Regulated electric and gas construction expenditures primarily include new business construction needs and improvements to existing facilities, including projects to improve reliability.

Funding for Capital Requirements

We discuss our funding for capital requirements in our 2006 Annual Report on Form 10-K.

Contractual Payment Obligations and Committed Amounts

We enter into various agreements that result in contractual payment obligations in connection with our business activities. These obligations primarily relate to our financing arrangements (such as long-term debt, preference stock, and operating leases), purchases of capacity and energy to support the growth in our merchant energy business activities, and purchases of fuel and transportation to satisfy the fuel requirements of our power generating facilities.

We detail our contractual payment obligations at June 30, 2007 in the following table:

	Payments
	2007		2008- 2009		2010- 2011		There- after		Total
	*(In millions)*
Contractual Payment Obligations
Long-term debt:1
Nonregulated
Principal	$	10.1	$	507.7	$	46.7	$	2,194.4	$	2,758.9
Interest	87.3		336.3		286.5		1,288.9		1,999.0
Total	97.4		844.0		333.2		3,483.3		4,757.9
BGE
Principal	—		418.5		138.3		1,661.8		2,218.6
Interest	48.7		236.8		208.9		1,480.0		1,974.4
Total	48.7		655.3		347.2		3,141.8		4,193.0
BGE preference stock	—		—		—		190.0		190.0
Operating leases2	276.2		573.6		398.2		823.1		2,071.1
Purchase obligations:3
Purchased capacity and energy4	221.2		711.0		238.4		346.9		1,517.5
Fuel and transportation	2,021.6		2,376.3		666.8		1,164.2		6,228.9
Other	126.9		85.9		7.6		27.8		248.2
Other noncurrent liabilities:
Pension benefits5	1.9		71.5		134.0		58.0		265.4
Postretirement and postemployment benefits6	18.4		83.0		93.6		314.5		509.5
Total contractual payment obligations	$	2,812.3	$	5,400.6	$	2,219.0	$	9,549.6	$	19,981.5

1 Amounts in long-term debt reflect the original maturity date. Investors may require us to repay $247.8 million early through put options and remarketing features. Interest on variable rate debt is included based on the June 30, 2007 forward curve for interest rates.

2 Our operating lease commitments include future payment obligations under certain power purchase agreements as discussed further in Note 11 of our 2006 Annual Report on Form 10-K.

3 Contracts to purchase goods or services that specify all significant terms. Amounts related to certain purchase obligations are based on future purchase expectations which may differ from actual purchases.

4 Our contractual obligations for purchased capacity and energy are shown on a gross basis for certain transactions, including both the fixed payment portions of tolling contracts and estimated variable payments under unit-contingent power purchase agreements.

5 Amounts related to pension benefits reflect our current 5-year forecast of contributions for our qualified pension plans and participant payments for our nonqualified pension plans. Refer to Note 7 of our 2006 Annual Report on Form 10-K for more detail on our pension plans.

6 Amounts related to postretirement and postemployment benefits are for unfunded plans and reflect present value amounts consistent with the determination of the related liabilities recorded in our Consolidated Balance Sheets.

Liquidity Provisions

In many cases, customers of our wholesale marketing, risk management, and trading operation rely on the creditworthiness of Constellation Energy. A decline below investment grade by Constellation Energy would negatively impact the business prospects of that operation.

We regularly review our liquidity needs to ensure that we have adequate facilities available to meet collateral requirements. This includes having liquidity available to meet margin requirements for our competitive supply operations.

We have certain agreements that contain provisions that would require additional collateral upon significant credit rating decreases in senior unsecured debt of Constellation Energy. Decreases in Constellation Energy’s credit ratings would not trigger an early payment on any of our credit facilities.

Under counterparty contracts related to our wholesale marketing, risk management, and trading operation, we are obligated to post collateral if Constellation Energy’s senior unsecured credit ratings declined below established contractual levels. Based on contractual provisions at June 30, 2007, we estimate that if Constellation Energy’s senior unsecured debt were downgraded we would have the following additional collateral obligations:

Credit Ratings Downgraded to	Level Below Current Rating		Incremental Obligations			Cumulative Obligations
	*(In millions)*
BBB/Baa2		1		$	554		$	554
BBB-/Baa3		2		150			704
Below investment grade		3		536			1,240

Based on market conditions and contractual obligations at the time of a downgrade, we could be required to post collateral in an amount that could exceed the amounts specified above, which could be material. We discuss our credit ratings in the Security Ratings section of our 2006 Annual Report on Form 10-K and our credit facilities in the Available Sources of Funding section beginning on page 42.

Certain credit facilities of Constellation Energy contain a provision requiring Constellation Energy to maintain a ratio of debt to capitalization equal to or less than 65%. At June 30, 2007, the debt to capitalization ratio as defined in the credit agreements was 44%. The failure by Constellation Energy to comply with these provisions could result in the acceleration of the maturity of the debt outstanding under these facilities, which is primarily letters of credit issued in support of our competitive supply operations. We detail our letters of credit in the Available Sources of Funding section on page 42.

The credit agreement of BGE contains a provision requiring BGE to maintain a ratio of debt to capitalization equal to or less than 65%. At June 30, 2007, the debt to capitalization ratio for BGE as defined in these credit agreements was 46%.

Off-Balance Sheet Arrangements

We discuss our off-balance sheet arrangements in our 2006 Annual Report on Form 10-K.

At June 30, 2007, Constellation Energy had a total of $12,828.1 million in guarantees outstanding, of which $11,683.0 million related to our competitive supply activities. These amounts do not represent incremental consolidated Constellation Energy obligations; rather, they primarily represent parental guarantees of certain subsidiary obligations to third parties. These guarantees are put into place in order to allow our subsidiaries the flexibility needed to conduct business with counterparties without having to post other forms of collateral. While the stated limit of these guarantees is $11,683.0 million, our calculated fair value of obligations for commercial transactions covered by these guarantees was $3,493.2 million at June 30, 2007. The $3,493.2 million represents the total amount Constellation Energy could be required to fund based on market prices as of June 30, 2007, if the subsidiaries do not honor contractual commitments covered by these guarantees. For those guarantees related to our mark-to-market energy or risk management liabilities, the fair value of the obligation is recorded in our Consolidated Balance Sheets. We believe it is unlikely that we would be required to perform or incur any losses associated with guarantees of our subsidiaries’ obligations.

We discuss our other guarantees in the Notes to Consolidated Financial Statements beginning on page 17.

Market Risk

Commodity Risk

We measure the sensitivity of our wholesale marketing, risk management, and trading mark-to-market energy contracts to potential changes in market prices using value at risk. Value at risk represents the potential pre-tax loss in the fair value of our wholesale marketing, risk management, and trading mark-to-market energy assets and liabilities over one and ten-day holding periods. We discuss value at risk in more detail in the Market Risk section of our 2006 Annual Report on Form 10-K.

The table below is the value at risk associated with our wholesale marketing, risk management, and trading operation’s mark-to-market energy assets and liabilities, including both trading and non-trading activities.

We discuss our mark-to-market results in more detail in the Competitive Supply section beginning on page 32.

	Quarter Ended June 30, 2007
	*(In millions)*
99% Confidence Level, One-Day Holding Period
Average		$	11.5
High		15.0
95% Confidence Level, One-Day Holding Period
Average		8.8
High		11.4
95% Confidence Level, Ten-Day Holding Period
Average		27.7
High		36.1

The following table details our value at risk for the trading portion of our wholesale marketing, risk management, and trading mark-to-market energy assets and liabilities over a one-day holding period at a 99% confidence level for the second quarter of 2007:

Due to the inherent limitations of statistical measures such as value at risk and the seasonality of changes in market prices, the value at risk calculation may not reflect the full extent of our commodity price risk exposure. Additionally, actual changes in the value of options may differ from the value at risk calculated using a linear approximation inherent in our calculation method. As a result, actual changes in the fair value of mark-to-market energy assets and liabilities could differ from the calculated value at risk, and such changes could have a material impact on our financial results.

Wholesale Credit Risk

We actively monitor the credit portfolio of our wholesale marketing, risk management, and trading operation to attempt to reduce the impact of counterparty default. As of June 30, 2007 and December 31, 2006, the credit portfolio of our wholesale marketing, risk management, and trading operation had the following public credit ratings:

	June 30, 2007			December 31, 2006
Rating
Investment Grade1		52	%		61	%
Non-Investment Grade		6			3
Not Rated		42			36

1 Includes counterparties with an investment grade rating by at least one of the major credit rating agencies. If split rating exists, the lower rating is used.

We utilize internal credit ratings to evaluate the creditworthiness of our wholesale customers, including those companies that do not have public credit ratings. The “Not Rated” category in the table above includes counterparties that do not have public credit ratings and include governmental entities, municipalities, cooperatives, power pools, and other load-serving entities, and marketers for which we determine creditworthiness based on internal credit ratings.

The following table provides the breakdown of the credit quality of our wholesale credit portfolio based on our internal credit ratings.

	June 30, 2007			December 31, 2006
Investment Grade Equivalent		68	%		82	%
Non-Investment Grade		32			18

The credit quality of our wholesale credit portfolio declined during the first half of 2007 as a result of the downgrade of Illinois utilities resulting from political and regulatory issues surrounding rate increases, our growing exposure to international freight and coal counterparties, and higher commodity prices compared to the end of 2006.

A portion of our wholesale credit risk is related to transactions that are recorded in our Consolidated Balance Sheets. These transactions primarily consist of open positions from our wholesale marketing, risk management, and trading operation that are accounted for using mark-to-market accounting, as well as amounts owed by wholesale counterparties for transactions that settled but have not yet been paid. The following table highlights the credit quality and exposures related to these activities at June 30, 2007:

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

We discuss our Legal Proceedings in the Notes to Consolidated Financial Statements on page 19.

Item 1A. Risk Factors

The risk factors included in our 2006 Annual Report on Form 10-K have not materially changed. You should consider carefully the risks described under Item 1A. Risk Factors in our 2006 Annual Report on Form 10-K. The risks and uncertainties described in our 2006 Annual Report on Form 10-K are not the only ones that may affect us. Additional risks and uncertainties also may adversely affect our business and operations including those discussed in Item 2. Management’s Discussion and Analysis. If any of the events described actually occur, our business and financial results could be materially adversely affected.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table presents shares surrendered by employees to satisfy tax withholding obligations on vested restricted stock and shares repurchased by us in the open market to satisfy employee stock option exercises and restricted stock grants.

Period	Total Number of Shares Purchased		Average Price Paid for Shares			Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares that May Yet Be Purchased Under the Plans and Programs
April 1 – April 30, 2007		—		$	—		—		—
May 1 – May 31, 2007		411,039		92.08			—		—
June 1 – June 30, 2007		78,012		92.22			—		—
Total		489,051		$	92.10		—		—

Item 4. Submission of Matters to Vote of Security Holders

On May 18, 2007, we held our annual meeting of shareholders. At that meeting, the following matters were voted upon:

1. Directors nominated by Constellation Energy were elected to serve for a term to expire in 2008 and until their successors are duly elected and qualified as follows:

	COMMON SHARES CAST:
	For	Against	Abstain
Yves C. de Balmann	149,628,879	737,083	1,503,718
Douglas L. Becker	140,471,935	9,921,352	1,476,389
James T. Brady	149,189,824	1,183,892	1,495,961
Edward A. Crooke	149,500,665	828,689	1,540,314
James R. Curtiss	140,052,248	10,292,244	1,525,185
Freeman A. Hrabowski, III	140,706,312	9,643,979	1,519,385
Nancy Lampton	148,051,133	2,310,455	1,508,085
Robert J. Lawless	139,206,479	11,153,333	1,509,860
Lynn M. Martin	139,381,757	10,975,770	1,512,146
Mayo A. Shattuck III	148,902,003	1,463,842	1,503,828
Michael D. Sullivan	140,690,530	9,690,182	1,488,961

2. The ratification of PricewaterhouseCoopers LLP as independent registered public accounting firm for 2007 was approved. With respect to holders of common stock, the number of affirmative votes cast was 146,802,830, the number of votes cast against was 3,747,911, and the number of abstentions was 1,318,936.

3. The 2007 Long-Term Incentive Plan was approved. With respect to holders of common stock, the number of affirmative votes cast was 109,155,617, the number of votes cast against was 19,558,465, the number of abstentions was 1,980,408 and the number of broker non-votes was 21,175,197.

4. The Executive Annual Incentive Plan was approved. With respect to holders of common stock, the number of affirmative votes cast was 135,688,914, the number of votes cast against was 10,571,341, the number of abstentions was 5,608,593 and the number of broker non-votes was 839.

Commission File Number	Exact name of registrant as specified in its charter	IRS Employer Identification No.
1-12869	CONSTELLATION ENERGY GROUP, INC.	52-1964611
1-1910	BALTIMORE GAS AND ELECTRIC COMPANY	52-0280210

			MARYLAND
(State of Incorporation of both registrants)
	750 E. PRATT STREET, BALTIMORE, MARYLAND 21202
(Address of principal executive offices) (Zip Code)
			410-783-2800
(Registrants’ telephone number, including area code)
		NOT APPLICABLE
(Former name, former address and former fiscal year, if changed since last report)

	*(In millions)*
Ineffectiveness on derivatives that qualified for hedge accounting treatment during the quarter		$	(10.5	)
Effect of reduced price correlation on derivatives that did not qualify for hedge accounting treatment during the quarter
Derivatives that remain designated as hedges prospectively		(16.4		)
Derivatives not eligible for designation as hedges prospectively		(37.0		)
Total		$	(63.9	)

	Settlement Term
	2007			2008		2009		2010		2011		2012			Thereafter			Fair Value
	*(In millions)*
Prices provided by external sources (1)	$	136.7		$	233.5	$	20.7	$	31.9	$	31.0	$	3.7			$	1.4		$	458.9
Prices based on models	(16.3		)	29.1		32.6		15.8		12.6		(1.5		)		1.3			73.6
Total net mark-to-market energy asset	$	120.4		$	262.6	$	53.3	$	47.7	$	43.6	$	2.2			$	2.7		$	532.5

	Page
Part I—Financial Information
Item 1—Financial Statements
Constellation Energy Group, Inc. and Subsidiaries
Consolidated Statements of Income		3
Consolidated Statements of Comprehensive Income		3
Consolidated Balance Sheets		4
Consolidated Statements of Cash Flows		6
Baltimore Gas and Electric Company and Subsidiaries
Consolidated Statements of Income		7
Consolidated Balance Sheets		8
Consolidated Statements of Cash Flows		10
Notes to Consolidated Financial Statements		11
Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations
Introduction and Overview		24
Business Environment		24
Events of 2007		25
Results of Operations		27
Financial Condition		41
Capital Resources		43
Item 3—Quantitative and Qualitative Disclosures About Market Risk		48
Item 4—Controls and Procedures		48
Part II—Other Information
Item 1—Legal Proceedings		49
Item 1A—Risk Factors		49
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds		49
Item 4—Submission of Matters to Vote of Security Holders		49
Item 5—Other Information		50
Item 6—Exhibits		51
Signature		52

Rating	Total Exposure Before Credit Collateral			Credit Collateral			Net Exposure			Number of Counterparties Greater than 10% of Net Exposure		Net Exposure of Counterparties Greater than 10% of Net Exposure
	*(Dollars in millions)*
Investment grade		$	1,328		$	256		$	1,072		—		$	—
Split rating		8			—			8			—		—
Non-investment grade		156			38			118			—		—
Internally rated—investment grade		455			58			397			—		—
Internally rated—non-investment grade		178			28			150			—		—
Total		$	2,125		$	380		$	1,745		—		$	—

Exhibit No. 10(a)*		Investor Agreement, dated July 20, 2007, by and between Constellation Energy Group, Inc. and Electricite de France International, SA (Designated as Exhibit 10.1 to the Current Report on Form 8-K dated July 25, 2007, File No. 1-12869).
Exhibit No. 10(b)		Agreed Upon Departure Term Sheet, dated May 18, 2007, by and between Constellation Energy Group, Inc. and E. Follin Smith.
Exhibit No. 12(a)		Constellation Energy Group, Inc. Computation of Ratio of Earnings to Fixed Charges.
Exhibit No. 12(b)		Baltimore Gas and Electric Company Computation of Ratio of Earnings to Fixed Charges and Computation of Ratio of Earnings to Combined Fixed Charges and Preferred and Preference Dividend Requirements.
Exhibit No. 31(a)		Certification of Chairman of the Board, President, and Chief Executive Officer of Constellation Energy Group, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 31(b)		Certification of Executive Vice President, Chief Financial Officer, and Chief Risk Officer of Constellation Energy Group, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 31(c)		Certification of President and Chief Executive Officer of Baltimore Gas and Electric Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 31(d)		Certification of Senior Vice President and Chief Financial Officer of Baltimore Gas and Electric Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32(a)		Certification of Chairman of the Board, President, and Chief Executive Officer of Constellation Energy Group, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32(b)		Certification of Executive Vice President, Chief Financial Officer, and Chief Risk Officer of Constellation Energy Group, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32(c)		Certification of President and Chief Executive Officer of Baltimore Gas and Electric Company pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32(d)		Certification of Senior Vice President and Chief Financial Officer of Baltimore Gas and Electric Company pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

		CONSTELLATION ENERGY GROUP, INC.
		(Registrant)
		BALTIMORE GAS AND ELECTRIC COMPANY
		(Registrant)
Date:	August 8, 2007	/s/ JOHN R. COLLINS
		John R. Collins, Executive Vice President of Constellation Energy Group, Inc. and Senior Vice President of Baltimore Gas and Electric Company, and as Principal Financial Officer of each Registrant

		Constellation Energy Group, Inc.

		By:		/s/ MAYO A. SHATTUCK III
				Mayo A. Shattuck III
				President and CEO

				/s/ E. FOLLIN SMITH
				E. Follin Smith

	6 Months Ended			12 Months Ended
	June 2007			December 2006		December 2005		December 2004			December 2003			December 2002
	*(In millions)*
Income from Continuing Operations (Before Extraordinary Loss and Cumulative Effects of Changes in Accounting Principles)		$	313.6	$	748.6	$	535.9		$	498.4		$	409.4	$	515.4
Taxes on Income, Including Tax Effect for BGE Preference Stock Dividends		90.0		343.1		155.4			110.2			213.7		292.6
Adjusted Income		$	403.6	$	1,091.7	$	691.3		$	608.6		$	623.1	$	808.0
Fixed Charges:
Interest and Amortization of Debt Discount and Expense and Premium on all Indebtedness		$	143.2	$	315.9	$	297.6		$	315.9		$	325.6	$	265.9
Earnings Required for BGE Preference Stock Dividends		10.8		21.1		21.6			21.4			21.7		21.8
Capitalized Interest		8.4		13.7		9.9			9.7			11.7		42.5
Interest Factor in Rentals		2.2		4.5		6.1			4.1			3.5		2.1
Total Fixed Charges		$	164.6	$	355.2	$	335.2		$	351.1		$	362.5	$	332.3
Amortization of Capitalized Interest		$	1.5	$	4.3	$	3.7		$	2.8		$	2.4	$	1.3
Earnings (1)		$	561.3	$	1,437.5	$	1,020.3		$	952.8		$	976.3	$	1,099.1
Ratio of Earnings to Fixed Charges		3.41		4.05		3.04			2.71			2.69		3.31

/s/ MAYO A. SHATTUCK III
Chairman of the Board, President, and Chief Executive Officer

/s/ JOHN R. COLLINS
Executive Vice President, Chief Financial Officer, and
Chief Risk Officer

/s/ KENNETH W. DEFONTES, JR.
President and Chief Executive Officer

/s/ JOHN R. COLLINS
Senior Vice President and Chief Financial Officer

/s/ MAYO A. SHATTUCK III
Mayo A. Shattuck III
Chairman of the Board, President, and
Chief Executive Officer

/s/ JOHN R. COLLINS
John R. Collins
Executive Vice President, Chief Financial Officer, and
Chief Risk Officer

/s/ KENNETH W. DEFONTES, JR.
Kenneth W. DeFontes, Jr.
President and Chief Executive Officer

At January 1, 2007

(In millions)

Total liabilities reflected in our balance sheet for unrecognized tax benefits of $56.7 million less $12.1 million of interest and penalties

Other unrecognized tax benefits not reflected in our balance sheet

Total unrecognized tax benefits