Item 8.01 Other Events

On October 31, 2008, the Federal Trade Commission granted early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, with regard to the proposed merger transaction between Constellation Energy Group, Inc. (the "Company") and MidAmerican Energy Holdings Company ("MidAmerican"). On November 3, 2008, the Company and MidAmerican issued a joint press release announcing this event. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01 Exhibits

(d)

Exhibit 99.1 Joint Press Release, dated November 3, 2008.

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