Form: 20-F

Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

March 19, 2024

Exhibit 13.1

Certification Pursuant to 18 U. S. C. Section 1350(b), as
Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, Rusty Hutson, Jr., the Chief Executive Officer, and Bradley G. Gray, the Chief Financial Officer of Diversified Energy Company PLC (the Company), hereby certify, that, to their knowledge:
1.The Annual Report on Form 20-F for the year ended December 31, 2023 (the Report), as filed with the Securities and Exchange Commission on March 19, 2024, fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and
2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
March 19, 2024 /s/ Rusty Hutson, Jr.
Date Rusty Hutson, Jr.
Chief Executive Officer
March 19, 2024 /s/ Bradley G. Gray
Date Bradley G. Gray
Chief Financial Officer