TRANSMISSION VERIFICATION REPORT

Exhibit 10.8

TRANSMISSION VERIFICATION REPORT

Constellation Energy Resources LLC

United States

Attention: Kimberly Fisher

Fax: 001 ###-###-####

Commodity Swap - Cash Settled

Dear Sirs

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the Transaction entered into between Constellation Energy Resources LLC (the “Counterparty”) and The Royal Bank of Scotland plc (“RBS”) on the Trade Date specified below (the “Transaction”).

The definitions and provisions contained in the 2005 ISDA Commodity Definitions (as published by the International Swaps and Derivatives Association, Inc.), (the “Definitions”) are incorporated into this Confirmation. In the event of any inconsistency between the Definitions and this Confirmation, this Confirmation will govern.

This Confirmation constitutes a “Confirmation” as referred to in, and supplements, forms a part of, and is subject to, the applicable ISDA Master Agreement which for these purposes means either: (i) where we have entered into an ISDA Master Agreement, that ISDA Master Agreement, or (ii) where we have not entered into any ISDA Master Agreement, an agreement in the form of the ISDA Master Agreement as if we had executed an agreement in such form (but without any Schedule except for the election of English law as the governing law and Sterling as the Termination Currency) on the Trade Date of the first such

Constellation Energy Resources LLC

United States

Attention: Kimberly Fisher

Fax: 001 ###-###-####

Commodity Swap - Cash Settled

Dear Sirs

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the Transaction entered into between Constellation Energy Resources LLC (the “Counterparty”) and The Royal Bank of Scotland plc (“RBS”) on the Trade Date specified below (the “Transaction”).

The definitions and provisions contained in the 2005 ISDA Commodity Definitions (as published by the International Swaps and Derivatives Association, Inc.), (the “Definitions”) are incorporated into this Confirmation. In the event of any inconsistency between the Definitions and this Confirmation, this Confirmation will govern.

This Confirmation constitutes a “Confirmation” as referred to in, and supplements, forms a part of, and is subject to, the applicable ISDA Master Agreement which for these purposes means either: (i) where we have entered into an ISDA Master Agreement, that ISDA Master Agreement, or (ii) where we have not entered into any ISDA Master Agreement, an agreement in the form of the ISDA Master Agreement as if we had executed an agreement in such form (but without any Schedule except for the election of English law as the governing law and Sterling as the Termination Currency) on the Trade Date of the first such Transaction between us. In the event of any inconsistency between the provisions of the applicable ISDA Master Agreement and this Confirmation, this Confirmation will prevail for the purpose of this Transaction.

The terms of the particular Transaction to which this Confirmation relates, are as follows:

1. General Terms

Market Disruption Events and Disruption Fallbacks

Notwithstanding anything to the contrary in the Agreement, the Market Disruption Events set forth in Sections 7.4(c)(i) – 7.4(c)(v) of the Definitions, and the provisions relating to Disruption Fallbacks set forth in Section 7.5(d)(i) of the Definitions, shall apply to this Transaction.

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6. Representations

Each party represents to the other party on the trade date of this Transaction that (in the absence of a written agreement between the parties that expressly imposes affirmative obligations to the contrary for this Transaction):-

(a) Non-Reliance. It is acting for its own account, and it has made its own independent decisions to enter into this Transaction and as to whether this Transaction is appropriate or proper for it based upon its own judgement and upon advice from such advisers as it has deemed necessary. It is not relying on any communication (written or oral) of the other party as investment advice or as a recommendation to enter into this Transaction; it being understood that information and explanations related to the terms and conditions of this Transaction shall not be considered investment advice or a recommendation to enter into this Transaction, no communication (written or oral) received from the other party shall be deemed to be an assurance or guarantee as to the expected results of this Transaction.

(b) Assessment and Understanding. It is capable of assessing the merits of and understanding (on its own behalf or through independent professional advice), and understands and accepts, the terms, conditions and risks of this Transaction. It is also capable of assuming, and assumes, the risks of this Transaction.

(c) Status of Parties. The other party is not acting as a fiduciary for or an adviser to it in respect of this Transaction.

7. Other

This Transaction has been entered into between yourselves and The Royal Bank of Scotland plc, a member of the London Stock Exchange and authorised and regulated by the Financial Services Authority.

This Confirmation is in final form and replaces and supersedes all previous Confirmations and communications in respect of this Transaction. No hard copy will follow.

In the event that you disagree with any part of this Confirmation, please notify us promptly via the contact details below so that the discrepancy may be resolved. Please note that our telephone conversations with you may be recorded.

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Please confirm that the foregoing correctly sets forth the terms of our agreement by executing a copy of this Confirmation and returning it to us by facsimile to:

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Annex

Each date in the column headed Payment Dates shall be subject to adjustment in accordance with the Modified Following Business Day Convention.

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