Response to Congressional Committee Letter

10 January 2024

Diversified Energy Company PLC

("Diversified" or the "Company")

Response to Congressional Committee Letter

Diversified Energy Company PLC (LSE: DEC, NSYE: DEC) announces that on January 10, 2024, the Company delivered a letter to the U.S. House of Representatives Committee on Energy and Commerce (the "Committee") in response to a December 18, 2023, letter received from four members of the Committee, requesting information.

A copy of Diversified's letter may be accessed via the hyperlink included below:

http://www.rns-pdf.londonstockexchange.com/rns/1838Z_1-2024-1-10.pdf

For further information, please contact:

About Diversified Energy Company PLC

Diversified is a leading publicly traded energy company focused on natural gas and liquids production, transport, marketing, and well retirement. Through our differentiated strategy, we acquire existing, long-life assets and invest in them to improve environmental and operational performance until retiring those assets in a safe and environmentally secure manner. Recognized by ratings agencies and organizations for our sustainability leadership, this solutions-oriented, stewardship approach makes Diversified the Right Company at the Right Time to responsibly produce energy, deliver reliable free cash flow, and generate shareholder value.