Exhibit 99.1

Michigan Consolidated Gas Company

Unaudited Consolidated Financial Statements as of and for the Quarter and the Six Months Ended June 30, 2011

Michigan Consolidated Gas Company

TABLE OF CONTENTS

			Page
Consolidated Statements of Operations (Unaudited)			3
Consolidated Statements of Financial Position (Unaudited)			4
Consolidated Statements of Cash Flows (Unaudited)			6
Consolidated Statements of Changes in Shareholder’s Equity and Comprehensive Income (Unaudited)			7
Notes to Consolidated Financial Statements (Unaudited)			8

MICHIGAN CONSOLIDATED GAS COMPANY

		Three Months Ended								Six Months Ended
		June 30								June 30
(in Millions)		2011				2010				2011				2010
Operating Revenues		$	238			$	230			$	918			$	975
Operating Expenses
Cost of gas			92				81				491				539
Operation and maintenance			102				67				203				175
Depreciation and amortization			22				22				44				48
Taxes other than income			14				15				31				31
			230				185				769				793
Operating Income			8				45				149				182
Other (Income) and Deductions
Interest expense			15				16				31				33
Interest income			(2	)			(2	)			(4	)			(4	)
Other income			(1	)			(1	)			(3	)			(3	)
Other expenses			—				2				1				3
			12				15				25				29
Income (Loss) Before Income Taxes			(4	)			30				124				153
Income Tax Provision (Benefit)			(1	)			11				45				55
Net Income (Loss)		$	(3	)		$	19			$	79			$	98

See Notes to Consolidated Financial Statements (Unaudited)

MICHIGAN CONSOLIDATED GAS COMPANY

		June 30				December 31
(in Millions)		2011				2010
ASSETS
Current Assets
Cash and cash equivalents		$	—			$	—
Accounts receivable (less allowance for doubtful accounts of $81 and $94, respectively)
Customer			304				421
Affiliates			62				49
Other			7				—
Inventories
Gas			21				43
Materials and supplies			16				17
Gas customer choice deferred asset			42				105
Current deferred income taxes			35				38
Notes receivable
Affiliates			77				4
Other			3				3
Other			3				12
			570				692
Investments			24				24
Property
Property, plant and equipment			3,763				3,817
Less accumulated depreciation and amortization			(1,547	)			(1,622	)
			2,216				2,195
Other Assets
Regulatory assets			716				778
Net investment in lease			70				71
Notes receivable — affiliates			—				1
Prepaid pension costs — affiliates			188				178
Other			8				10
			982				1,038
Total Assets		$	3,792			$	3,949

See Notes to Consolidated Financial Statements (Unaudited)

MICHIGAN CONSOLIDATED GAS COMPANY
CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (UNAUDITED)

		June 30				December 31
(in Millions, Except Shares)		2011				2010
LIABILITIES AND SHAREHOLDER’S EQUITY
Current Liabilities
Accounts payable
Affiliates		$	16			$	24
Other			152				156
Short-term borrowings
Affiliates			—				137
Other			—				150
Gas inventory equalization			109				—
Current portion of long-term debt, including capital leases			40				—
Other			90				111
			407				578
Long-Term Debt			849				889
Other Liabilities
Deferred income taxes			539				454
Regulatory liabilities			582				614
Accrued pension liability — affiliates			51				50
Accrued postretirement liability — affiliates			158				182
Asset retirement obligations			117				118
Other			52				53
			1,499				1,471
Commitments and Contingencies (Notes 6 and 8)
Shareholder’s Equity
Common stock, $1 par value, 15,100,000 shares authorized, 10,300,000 shares issued and outstanding			534				534
Retained earnings			505				479
Accumulated other comprehensive loss			(2	)			(2	)
			1,037				1,011
Total Liabilities and Shareholder’s Equity		$	3,792			$	3,949

See Notes to Consolidated Financial Statements (Unaudited)

MICHIGAN CONSOLIDATED GAS COMPANY

		Six Months Ended
		June 30
(in Millions)		2011				2010
Operating Activities
Net income		$	79			$	98
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization			44				48
Deferred income taxes and investment tax credits, net			38				12
Changes in assets and liabilities:
Accounts receivable, net			93				210
Inventories			22				10
Accrued postretirement liability-affiliates			(24	)			(3	)
Accrued pension liability-affiliates			(10	)			(13	)
Accrued gas cost recovery			8				(3	)
Accounts payable			(13	)			(27	)
Gas inventory equalization			109				68
Income, property and other taxes payable			(2	)			34
Other assets			130				51
Other liabilities			2				(12	)
Net cash from operating activities			476				473
Investing Activities
Plant and equipment expenditures			(76	)			(61	)
Proceeds from sale of assets			—				9
Notes receivable			(73	)			3
Other			—				25
Net cash used for investing activities			(149	)			(24	)
Financing Activities
Short-term borrowings, net			(287	)			(439	)
Capital contribution by parent company			—				25
Dividends on common stock			(40	)			(35	)
Other			—				(2	)
Net cash used for financing activities			(327	)			(451	)
Net Decrease in Cash and Cash Equivalents			—				(2	)
Cash and Cash Equivalents at Beginning of Period			—				2
Cash and Cash Equivalents at End of Period		$	—			$	—
Noncash Financing Activity
Transfer of non-utility subsidiaries to affiliate		$	(13	)		$	—

See Notes to Consolidated Financial Statements (Unaudited)

MICHIGAN CONSOLIDATED GAS COMPANY

														Accumulated
														Other
(Dollars in Millions,		Common Stock								Retained				Comprehensive
Shares in Thousands)		Shares				Amount				Earnings				Loss				Total
Balance, December 31, 2010			10,300			$	534			$	479			$	(2	)		$	1,011
Net income			—				—				79				—				79
Dividends declared on common stock			—				—				(40	)			—				(40	)
Transfer of non-utility subsidiaries to affiliate			—				—				(13	)			—				(13	)
Balance, June 30, 2011			10,300			$	534			$	505			$	(2	)		$	1,037

The following table displays other comprehensive income for the six months ended June 30:

(in Millions)		2011				2010
Net income		$	79			$	98
Comprehensive income		$	79			$	98

See Notes to Consolidated Financial Statements (Unaudited)

Michigan Consolidated Gas Company

NOTE 1 — BASIS OF PRESENTATION

These Consolidated Financial Statements should be read in conjunction with the Notes to Consolidated Financial Statements included in the 2010 Consolidated Financial Statements furnished on Form 8-K.

The accompanying Consolidated Financial Statements are prepared using accounting principles generally accepted in the United States of America. These accounting principles require management to use estimates and assumptions that impact reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from the Company’s estimates.

The Consolidated Financial Statements are unaudited, but in the Company’s opinion include all adjustments necessary to a fair statement of the results for the interim periods. All adjustments are of a normal recurring nature, except as otherwise disclosed in these Consolidated Financial Statements and Notes to Consolidated Financial Statements. Financial results for this interim period are not necessarily indicative of results that may be expected for any other interim period or for the fiscal year ending December 31, 2011.

References in this report to “Company” and “MichCon” are to Michigan Consolidated Gas Company and its subsidiaries, collectively.

Certain prior year balances were reclassified to match the current year’s financial statement presentation.

NOTE 2 — SIGNIFICANT ACCOUNTING POLICIES

Michigan Corporate Income Tax (MCIT)

On May 25, 2011, the Michigan Business Tax (MBT) was repealed and the MCIT was enacted and will become effective January 1, 2012. The MCIT subjects corporations with business activity in Michigan to a 6 percent tax rate on an apportioned income tax base and eliminates the modified gross receipts tax and nearly all credits available under the MBT. The MCIT also eliminated the future deductions allowed under MBT that enabled companies to establish a one-time deferred tax asset upon enactment of the MBT to offset deferred tax liabilities that resulted from enactment of the MBT.

Effective with the enactment of the MCIT in the second quarter of 2011, the net state deferred tax liability was remeasured to reflect the impact of the MCIT tax rate on cumulative temporary differences expected to reverse after the effective date. The net impact of this remeasurement was a decrease in deferred income tax liabilities of $6 million that was offset against the regulatory asset established upon the enactment of the MBT.

Due to the elimination of the future tax deductions allowed under the MBT, the one-time MBT deferred tax asset that was established upon the enactment of the MBT has been remeasured to zero. The net impact of this remeasurement is a reduction of net deferred tax assets of $53 million that was offset against the regulatory liability established upon enactment of the MBT

Consistent with the original establishment of this deferred tax liability, no recognition of this non-cash transaction has been reflected in the Consolidated Statements of Cash Flows.

Stock-Based Compensation

The Company received an allocation of costs from DTE Energy associated with stock-based compensation of $2 million in each of the three month periods ended June 30, 2011 and June 30, 2010, while such allocation was $4 million in each of the six month periods ended June 30, 2011 and 2010.

NOTE 3 — FAIR VALUE

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants’ use in pricing assets or liabilities. These inputs can be readily observable, market corroborated or generally unobservable inputs. The Company makes certain assumptions it believes that market participants would use in pricing assets or liabilities, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. Credit risk of the Company and its counterparties is incorporated in the valuation of assets and liabilities through the use of credit reserves, the impact of which was immaterial at June 30, 2011 and December 31, 2010. The Company believes it uses valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.

Fair Value of Financial Instruments

The fair value of long-term debt is determined by using quoted market prices when available and a discounted cash flow analysis based upon estimated current borrowing rates when quoted market prices are not available. The table below shows the fair value and the carrying value for long-term debt securities. Certain other financial instruments, such as notes payable, customer deposits and notes receivable are not shown as carrying value approximates fair value.

June 30, 2011

December 31, 2010

Fair Value

Carrying Value

Fair Value

Carrying Value

Long-Term Debt

$988 million

$889 million

$981 million

$889 million

NOTE 4 — FINANCIAL AND OTHER DERIVATIVE INSTRUMENTS

The Company recognizes all derivatives at their fair value on the Consolidated Statements of Financial Position unless they qualify for certain scope exceptions, including the normal purchases and normal sales exception. Further, derivatives that qualify and are designated for hedge accounting are classified as either hedges of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge), or as hedges of the fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge). For cash flow hedges, the portion of the derivative gain or loss that is effective in offsetting the change in the value of the underlying exposure is deferred in Accumulated other comprehensive income and later reclassified into earnings when the underlying transaction occurs. For fair value hedges, changes in fair values for the derivative are recognized in earnings each period. Gains and losses from the ineffective portion of any hedge are recognized in earnings immediately. For derivatives that do not qualify or are not designated for hedge accounting, changes in the fair value are recognized in earnings each period.

The Company’s primary market risk exposure is associated with commodity prices, credit and interest rates. MichCon has risk management policies to monitor and manage market risks.

Commodity Price Risk

The Company has fixed-priced contracts for portions of its expected gas supply requirements through March 2014. These gas supply contracts are designated and qualify for the normal purchases and sales exception and are therefore accounted for under the accrual method. The Company may also sell forward storage and transportation capacity contracts. Forward firm storage and transportation contracts are not derivatives and are therefore accounted for under the accrual method.

Credit Risk

The Company is exposed to credit risk if customers or counterparties do not comply with their contractual obligations. MichCon maintains credit policies that significantly minimize overall credit risk. These policies include an evaluation of potential customers’ and counterparties’ financial condition, credit rating, collateral requirements or other credit enhancements such as letters of credit or guarantees. The Company generally uses standardized agreements that allow the netting of positive and negative transactions associated with a single counterparty.

The Company maintains a provision for credit losses based on factors surrounding the credit risk of its customers, historical trends, and other information. Based on the Company’s credit policies and its June 30, 2011 provision for credit losses, the Company’s exposure to counterparty nonperformance is not expected to have a material adverse effect on the Company’s financial statements.

Interest Rate Risk

MichCon occasionally uses treasury locks and other interest rate derivatives to hedge the risk associated with interest rate market volatility. In 2004, MichCon entered into an interest rate derivative to limit its sensitivity to market interest rate risk associated with the issuance of long-term debt. Such instrument was designated as a cash flow hedge. The Company subsequently issued long-term debt and terminated the hedge at a cost that is included in accumulated other comprehensive loss. Amounts recorded in other comprehensive loss will be reclassified to interest expense as the related interest affects earnings through 2033.

NOTE 5 — ASSET RETIREMENT OBLIGATIONS

A reconciliation of the asset retirement obligations for the six months ended June 30, 2011 follows:

(in Millions)
Asset retirement obligations at December 31, 2010		$	118
Accretion			4
Revision in estimated cash flows			(1	)
Liabilities settled			(4	)
Asset retirement obligations at June 30, 2011		$	117

NOTE 6 — REGULATORY MATTERS

Gas Cost Recovery (GCR) Proceedings

The GCR process is designed to allow MichCon to recover all of its gas supply costs if incurred under reasonable and prudent policies and practices. The MPSC reviews these costs, policies and practices for prudence in annual plan and reconciliation filings.

The following table summarizes MichCon’s GCR reconciliation filing currently pending with the MPSC:

Net Over-Recovery,

GCR Year

Date Filed

Including Interest

GCR Cost of Gas Sold

2009-2010

June 2010

$5.9 million

$1.0 billion

2010-2011

June 2011

$1.0 million

$0.7 billion

2011-2012 Plan Year — In December 2010, MichCon filed its GCR plan case for the 2011-2012 GCR plan year. MichCon filed for a maximum base GCR factor of $5.89 per Mcf adjustable monthly by a contingency factor.

Other

The Company is unable to predict the outcome of the unresolved regulatory matters discussed herein. Resolution of these matters is dependent upon future MPSC orders and appeals, which may materially impact the financial position, results of operations and cash flows of the Company.

NOTE 7 — SHORT-TERM CREDIT ARRANGEMENTS AND BORROWINGS

In August 2010, MichCon entered into an amended and restated $250 million two-year unsecured revolving credit agreement and a new $175 million three-year unsecured revolving credit agreement with a syndicate of 23 banks that may be used for general corporate borrowings, but are intended to provide liquidity support for the Company’s commercial paper program. No one bank provides more than 8.25% of the commitment in any facility. Borrowings under the facilities are available at prevailing short-term interest rates.

The above agreements require the Company to maintain a total funded debt to capitalization ratio of no more than 0.65 to 1. In the agreements, “total funded debt” means all indebtedness of the Company and its consolidated subsidiaries, including capital lease obligations, hedge agreements and guarantees of third parties’ debt, but excluding contingent obligations, nonrecourse and junior

subordinated debt and, except for calculations at the end of the second quarter, certain MichCon short-term debt. “Capitalization” means the sum of (a) total funded debt plus (b) “consolidated net worth,” which is equal to consolidated total stockholders’ equity of the Company and its consolidated subsidiaries (excluding pension effects under certain FASB statements), as determined in accordance with accounting principles generally accepted in the United States of America. At June 30, 2011, the total funded debt to total capitalization ratio for MichCon was 0.46 to 1. Should the Company have delinquent obligations of at least $50 million to any creditor, such delinquency will be considered a default under the Company’s credit agreements. There was no commercial paper outstanding at June 30, 2011 and $150 million of commercial paper outstanding at December 31, 2010.

NOTE 8 — COMMITMENTS AND CONTINGENCIES

Environmental

Contaminated Sites — Prior to the construction of major interstate natural gas pipelines, gas for heating and other uses was manufactured locally from processes involving coal, coke or oil. The facilities, which produced gas, have been designated as manufactured gas plant (MGP) sites. MichCon owns, or previously owned, 14 former MGP sites. Investigations have revealed contamination related to the by-products of gas manufacturing at each site. In addition to the MGP sites, MichCon is also in the process of cleaning up other contaminated sites. Cleanup activities associated with these sites will be conducted over the next several years.

The MPSC has established a cost deferral and rate recovery mechanism for investigation and remediation costs incurred at former MGP sites. Accordingly, the Company recognizes a liability and corresponding regulatory asset for estimated investigation and remediation costs at former MGP sites. As of June 30, 2011 and December 31, 2010, MichCon had $37 million and $36 million, respectively, accrued for remediation.

Any significant change in assumptions, such as remediation techniques, nature and extent of contamination and regulatory requirements, could impact the estimate of remedial action costs for the sites and affect the Company’s financial position and cash flows. The Company anticipates the cost amortization methodology approved by the MPSC for MichCon, which allows MichCon to amortize the MGP costs over a ten-year period beginning with the year subsequent to the year the MGP costs were incurred, will prevent environmental costs from having a material adverse impact on the Company’s results of operations.

Labor Contracts

There are several bargaining units for the Company’s represented employees. In the 2011 second quarter, a new three-year agreement was ratified covering approximately 400 represented employees. The majority of the remaining represented employees are under contracts that expire in October 2013.

Purchase Commitments

As of June 30, 2011, the Company was party to numerous long-term purchase commitments relating to a variety of goods and services required for its business. These agreements primarily consist of long-term gas purchase and transportation agreements. The Company estimates that these commitments will be approximately $1.3 billion through 2051. MichCon also estimates that 2011 capital expenditures will be approximately $180 million. The Company has made certain commitments in connection with expected capital expenditures.

Bankruptcies

The Company sells gas and gas storage and transportation services to numerous companies operating in the steel, automotive, energy, retail and other industries. Certain of its customers have filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. The Company regularly reviews contingent matters relating to these customers and its sale contracts and it records provisions for amounts considered at risk of probable loss. The Company believes its previously accrued amounts are adequate for probable losses. The final resolution of these matters is not expected to have a material effect on its consolidated financial statements.

Other Contingencies

The Company is involved in certain legal, regulatory, administrative and environmental proceedings before various courts, arbitration panels and governmental agencies concerning claims arising in the ordinary course of business. These proceedings include certain contract disputes, additional environmental reviews and investigations, audits, inquiries from various regulators, and pending judicial matters. The Company cannot predict the final disposition of such proceedings. The Company regularly reviews legal matters and records provisions for claims that it can estimate and are considered probable of loss. The resolution of these pending proceedings is not expected to have a material effect on its operations or financial statements in the periods they are resolved.

See Note 6 for a discussion of contingencies related to Regulatory Matters.

NOTE 9 — RETIREMENT BENEFITS AND TRUSTEED ASSETS

The following details the components of net periodic benefit costs (credit) for pension benefits and other postretirement benefits:

		Pension Benefits										Other Postretirement Benefits
(in Millions)		2011					2010					2011					2010
Three Months Ended June 30
Service cost			$	4				$	3				$	4				$	3
Interest cost				10					10					7					7
Expected return on plan assets				(18	)				(20	)				(8	)				(6	)
Amortization of:
Net actuarial loss				7					4					3					3
Net transition liability				—					—					—					1
Net periodic benefit cost (credit)			$	3				$	(3	)			$	6				$	8
		Pension Benefits										Other Postretirement Benefits
(in Millions)		2011					2010					2011					2010
Six Months Ended June 30
Service cost			$	7				$	6				$	8				$	7
Interest cost				20					21					14					14
Expected return on plan assets				(36	)				(40	)				(15	)				(12	)
Amortization of:
Net actuarial loss				14					8					6					5
Net transition liability				—					—					—					2
Net periodic benefit cost (credit)			$	5				$	(5	)			$	13				$	16

Pension and other Postretirement Contributions

The Company does not expect to make a contribution to its pension plans in 2011.

In January 2011, the Company contributed $45 million to its other postretirement benefit plans. The Company does not plan on making additional contribution to the plans in 2011.

NOTE 10 — DISPOSALS

Effective January 1, 2011, MichCon transferred certain non – utility subsidiaries to an affiliated company. The transfer was effected by a non-cash dividend of approximately $13 million.