Exelon and ComEd meet their short-term liquidity requirements primarily through the issuance of commercial paper. Generation and PECO meet their short-term liquidity requirements primarily through the issuance of commercial paper and borrowings from the intercompany money pool.

On March 23, 2011, Exelon Corporate, Generation and PECO replaced their unsecured revolving credit facilities with new facilities with aggregate bank commitments of $500 million, $5.3 billion and $600 million, respectively. Under these facilities, Exelon, Generation and PECO may issue letters of credit in the aggregate amount of up to $200 million, $3.5 billion and $300 million, respectively. The credit facilities expire on March 23, 2016, unless extended in accordance with the terms of the agreements. Each credit facility permits the applicable borrower to request two one-year extensions. Each credit facility also allows Exelon, Generation and PECO to request increases in the aggregate commitments up to an additional $250 million, in the case of each of Exelon and PECO, and up to an additional $1 billion in the case of Generation. Any such extensions or increases are subject to the approval of the lenders party to the credit facilities in their sole discretion. Exelon Corporate, Generation and PECO incurred $3 million, $37 million and $4 million, respectively, in costs related to the replacement of their credit facilities. These costs included upfront and arranger fees, as well as other costs such as external legal fees and filing costs. These costs will be amortized to interest expense over the terms of the credit facilities.

As of June 30, 2011, ComEd had access to an unsecured revolving credit facility with aggregate bank commitments of $1 billion that expires on March 25, 2013, unless extended in accordance with its terms. Under this facility, ComEd may issue letters of credit in the aggregate amount of up to $1 billion. ComEd may request two additional one-year extensions. In addition, ComEd may request increases in the aggregate bank commitments under its credit facility up to an additional $500 million. Any such extensions or increases are subject to the approval of the lenders party to the credit facility in their sole discretion.

Borrowings under each credit agreement bear interest at a rate selected by the borrower based upon either the prime rate or at a fixed rate for a specified period based upon a LIBOR-based rate. The Exelon, Generation and PECO agreements provide for adders of up to 85 basis points for prime-based borrowings and up to 185 basis points for the LIBOR-based borrowings based upon the credit rating of the borrower. At June 30, 2011, Exelon, Generation and PECO adders were 30, 30 and 10 basis points, respectively, for prime based borrowings and 130, 130 and 110 basis points, respectively, for LIBOR-based borrowings. The ComEd agreement provides adders of up to 137.5 basis points for prime-based borrowings and up to 237.5 basis points for LIBOR-based borrowings to be added, based upon ComEd's credit rating. At June 30, 2011, ComEd's adder was 87.5 basis points for prime based borrowings and 187.5 basis points for LIBOR-based borrowings.

Generation, ComEd and PECO had $30 million, $32 million and $32 million, respectively, of additional credit facility agreements with minority and community banks located primarily within ComEd's and PECO's service territories. These facilities expire on October 21, 2011 and are solely utilized to issue letters of credit. As of June 30, 2011, letters of credit issued under these agreements totaled $25 million, $21 million and $20 million for Generation, ComEd and PECO, respectively.

Additionally, on November 4, 2010, Generation entered into a bilateral credit facility, which provides for an aggregate commitment of up to $500 million. The effectiveness and full availability of the credit facility were subject to various conditions. On February 22, 2011, Generation satisfied all conditions to the effectiveness and availability of credit under the credit facility for loans and letters of credit in the aggregate maximum amount of $300 million, which is the limit currently authorized by the board of directors of Exelon Corporation for this credit facility. Availability under the bilateral credit facility extends through December 2015 for $150 million of the $300 million commitment and March 2016 for the remaining $150 million. The bilateral credit facility will be used by Generation primarily to meet requirements for letters of credit but also permits cash borrowings at a rate of LIBOR or a base rate, plus an adder of 200 basis points. No cash borrowings are anticipated under the credit facility. In addition, Generation will pay a facility fee, payable on the first day of each calendar quarter at a rate per annum equal to a specified facility fee rate on the total amount of the credit facility regardless of usage.

Exelon, Generation, ComEd and PECO had the following amounts of commercial paper borrowings outstanding at June 30, 2011 and December 31, 2010:

As of June 30, 2011, there were no borrowings under the Registrants' credit facilities.

During the six months ended June 30, 2011, the following long-term debt was issued:

Company	Type	Interest Rate			Maturity		Amount			Use of Proceeds
ComEd	First Mortgage Bonds	1.625	%		January 15, 2014		$	600		Used as an interim source of liquidity for the January 2011 contribution to Exelon-sponsored pension plans in which ComEd participates and for other general corporate purposes.

During the six months ended June 30, 2010, there were no issuances of long-term debt.

During the six months ended June 30, 2011, the following long-term debt was retired:

During the six months ended June 30, 2010, the following long-term debt was retired:

Company	Type	Interest Rate		Maturity	Amount
ComEd	Sinking fund debentures	4.75	%	December 1, 2011	$	1
Generation	Kennett Square Capital Lease	7.83	%	September 20, 2020		1
Generation	Montgomery County Series 1994 B Tax Exempt Bonds	Variable		June 1, 2029		13
Generation	Indiana County Series 2003 A Tax Exempt Bonds	Variable		June 1, 2027		17
Generation	York County Series 1993 A Tax Exempt Bonds	Variable		August 1, 2016		19
Generation	Salem County 1993 Series A Tax Exempt Bonds	Variable		March 1, 2025		23
Generation	Delaware County 1993 Series A Tax Exempt Bonds	Variable		August 1, 2016		24
Generation	Montgomery County Series 1996 A Tax Exempt Bonds	Variable		March 1, 2034		34
Generation	Montgomery County Series 1994 A Tax Exempt Bonds	Variable		June 1, 2029		83
Exelon	2005 Senior Notes	4.45	%	June 15, 2010		400
PECO	PETT Transition Bonds	6.52	%	September 1, 2010		402

Under the terms of ComEd's variable-rate tax-exempt debt agreements, ComEd may be required to repurchase that debt before its stated maturity unless supported by sufficient letters of credit. If ComEd was required to repurchase the debt, it would reassess its options to obtain new letters of credit or remarket the bonds in a manner that does not require letter of credit support. ComEd has classified amounts outstanding under these debt agreements as long-term debt based on management's intent and ability to renew or replace the letters of credit, refinance the debt at reasonable terms on a long-term fixed-rate basis or utilize the capacity under its existing long-term credit facility.

PECO is party to an agreement with a financial institution under which it transferred an undivided interest, adjusted daily, in its customer accounts receivable designated under the agreement in exchange for proceeds of $225 million, which is classified as a short-term note payable on Exelon's and PECO's Consolidated Balance Sheets. As of June 30, 2011 and December 31, 2010, the financial institution's undivided interest in Exelon's and PECO's customer accounts receivable was equivalent to $309 million and $346 million, respectively, which is calculated under the terms of the agreement. Upon termination or liquidation of this agreement, the financial institution is entitled to recover up to $225 million plus the accrued yield payable from its undivided interest in PECO's receivables. This agreement terminates on September 6, 2011 unless extended in accordance with its terms. As of June 30, 2011, PECO was in compliance with the requirements of the agreement. In the event the agreement is not extended, PECO has sufficient short-term liquidity and may seek alternate financing.