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CORRESP
 1
 filename1.htm

 June 6, 2025

 Via EDGAR

 United States Securities and Exchange Commission
 Division of Corporation Finance
 Office of Natural Resources
 100 F Street, NE
 Washington, D.C. 20549-3561

 Attn:

 Brian McAllister

 Kimberly Calder
 Sandra Wall
 John Hodgin

 Re:

 Diversified Energy Co PLC

 Form 20-F for the Fiscal Year ended December 31, 2024
 Filed March 17, 2025
 File No. 001-41870

 Ladies and Gentlemen:

 This letter sets forth the responses of Diversified Energy Co PLC (“ DEC ”, the “ Company ,” or “ we ”) to the comments received from the staff of the Division of Corporation Finance (the “ Staff ”)
 of the Securities and Exchange Commission by letter dated May 22, 2025 (the “ Comment Letter ”) with respect to DEC’s Annual Report on Form 20-F for the fiscal year ended December 31, 2024
 (File No. 001-41870) filed with the Commission on March 17, 2025 (the “ Form 20-F ”).

 For the Staff’s convenience, we have repeated each comment of the Staff exactly as given in the Comment Letter and provided our responses below each such comment.

 Form 20-F for the Fiscal Year ended December 31, 2024

 Key Facts for 2024, page 4

 1.

 We note that PV-10 is not calculated in accordance with IFRS and is disclosed to be an alternative performance measure on page 152. Please revise to include the reference (a)
 for the information on how this metric is calculated and reconciled to the most directly comparable IFRS measure.

 Response : The Company respectfully acknowledges the Staff’s comment.  In response to the Staff’s comment, the Company will disclose in future filings that PV-10 is calculated
 as the present value of estimated future natural gas and oil revenues, net of forecasted direct expenses, and discounted at an annual rate of 10%. The calculation does not consider income taxes and utilizes an SEC pricing assumption for the year
 ended December 31, 2024. Additionally, we respectfully direct the Staff to pages 8 and 152 of the Form 20-F for a reconciliation of PV-10 to the standardized measure and note that the standardized measure was prepared in accordance with the
 requirements in ASC 932.

 Our Business
 Reserve Data
 Summary of Reserves, page 8

 2.

 Please expand the proved reserve tables on pages 8, 10 and 145 to include a footnote to clarify the basis for converting oil and NGL volumes to natural gas equivalent volumes
 (e.g. the number of standard cubic feet of natural gas per one barrel of oil). Refer to Instruction 3 to Item 1202(a)(2) of Regulation S-K.

 In addition, please include a similar footnote with the tables presenting production on pages 13, 21, and 145.

 Response : The Company respectfully acknowledges the Staff’s comment and, in future filings, will add a footnote to such tables to clarify that the basis for converting oil and
 NGL volumes to natural gas equivalent volumes (MMcfe) is determined by using the ratio of one Bbl of oil or NGLs to six Mcf of natural gas. The Company also directs the Staff to the definition of “Boe” on page 160 of the Form 20-F, which reflects
 that the basis for converting oil and NGL volumes to natural gas equivalent volumes is determined by using the ratio of one Bbl of oil or NGLs to six Mcf of natural gas.

 Proved Reserves, page 9

 3.

 We note the Extensions and Discoveries during 2023 and 2024 are explained as adjustments “due to well assignments recorded in the accounting actuals.” Please expand your
 explanation to clarify why these adjustments are not considered as revisions in previous estimates. Refer to the disclosure requirements in FASB ASC 932-235-50-5.

 Response : The Company respectfully acknowledges the Staff’s comment. The adjustments “due to well assignments recorded in the accounting actuals” disclosed in the Form 20-F are
 the result of first-time activity on existing resources and are not adjustments or revisions to previous estimates. The Company notes that the amounts of these adjustments were immaterial, representing 0.02% and 0.03% of total proved reserves as of
 the beginning of the 2023 and 2024 periods, respectively. As a result, the Company believes that no expanded disclosure is required for these adjustments and plans to remove the explanations to these adjustments in future applicable filings.

 Proved Undeveloped Reserves, page 10

 4.

 Please expand your discussion of the changes due to conversions to include the dollar amount of capital incurred to convert proved undeveloped reserves to proved developed
 reserves. Refer to the disclosure requirements in Item 1203(c) of Regulation S-K.

 Response : The Company respectfully acknowledges the Staff’s comment. Capital costs incurred to convert proved undeveloped reserves to proved developed reserves were
 approximately $12.7 million, $0, and $7.7 million for the years ended December 31, 2024, 2023, and 2022, respectively. The Company will disclose the dollar amount of capital incurred to convert proved undeveloped reserves to proved developed reserves
 in future applicable filings.

 Reserve Data
 Significant Fields, page 13

 5.

 You disclose total production for the Appalachian Region because you determined it is considered significant or greater than 15% of total proved reserves. Please tell us how
 you also comply with the disclosure requirements at Item 1204(b) of Regulation S-K.

 Response : The Company respectfully acknowledges the Staff’s comment and advises the Staff that the Company will include in future applicable filings disclosure of the average
 sales price per unit by commodity type and the average production costs per unit of production for the Appalachia Region for three years in accordance with Item 1204(b) of Regulation S-K. The following table presents the average realized sales prices
 and operating costs per unit for the Appalachia Region for the three years ended December 31, 2024:

 Year Ended

 APPALACHIA

 December 31, 2024

 December 31, 2023

 December 31, 2022

 Average realized sales price

 (excluding impact of derivatives settled in cash)

 Natural gas (Mcf)

 $

 2.12

 $

 2.31

 $

 6.10

 NGLs (Bbls)

 24.07

 21.58

 36.01

 Oil (Bbls)

 72.61

 74.81

 87.20

 Total (Mcfe)

 $

 2.47

 $

 2.57

 $

 6.20

 Average realized sales price

 (including impact of derivatives settled in cash)

 Natural gas (Mcf)

 $

 2.79

 $

 3.01

 $

 3.04

 NGLs (Bbls)

 23.22

 23.40

 19.56

 Oil (Bbls)

 67.44

 67.79

 69.35

 Total (Mcfe)

 $

 3.04

 $

 3.20

 $

 3.16

 Operating costs per Mcfe

 LOE

 $

 0.59

 $

 0.56

 $

 0.51

 Midstream operating expense

 0.40

 0.35

 0.33

 Transportation expense

 0.29

 0.29

 0.31

 Total operating expense per Mcfe

 $

 1.28

 $

 1.20

 $

 1.15

 Supplemental Natural Gas & Oil Information (Unaudited)
 Estimated Reserves, page 145

 6.

 Please expand the tabular presentation of proved developed and proved undeveloped reserves by individual product type on page 146 to provide the net quantities at the beginning
 of the initial year shown in the reserves reconciliation, e.g. December 31, 2021. Refer to the disclosure requirements in FASB ASC 932-235-50-4.

 Response : The Company respectfully acknowledges the Staff’s comment and will provide the initial year for each of the three years of reconciliations of proved developed and
 proved undeveloped reserves in future applicable filings, as set out in the example below for the three years ended December 31, 2024.

 Natural Gas

 NGLs

 Oil

 Total

 (MMcf)

 (MBbls)

 (MBbls)

 (MMcfe)

 Total proved reserves as of:

 December 31, 2021

 4,009,037

 89,080

 14,252

 4,629,029

 December 31, 2022

 4,349,611

 101,931

 14,830

 5,050,177

 December 31, 2023

 3,200,044

 95,701

 12,616

 3,849,946

 December 31, 2024

 2,895,619

 103,471

 18,524

 3,627,589

 Total proved developed reserves as of:

 December 31, 2021

 4,008,160

 89,071

 13,823

 4,625,524

 December 31, 2022

 4,340,779

 101,931

 14,830

 5,041,345

 December 31, 2023

 3,184,499

 94,391

 12,380

 3,825,125

 December 31, 2024

 2,895,619

 103,471

 18,524

 3,627,589

 Total proved undeveloped reserves as of:

 December 31, 2021

 877

 9

 429

 3,505

 December 31, 2022

 8,832

 —

 —

 8,832

 December 31, 2023

 15,545

 1,310

 236

 24,821

 December 31, 2024

 —

 —

 —

 —

 Standardized Measure of Discounted Future Net Cash Flows, page 146

 7.

 We note your standardized measure calculation, as of December 31, 2024, includes a positive 10% annual discount value of $253.1 million. This calculation creates a standardized
 measure of $1,396.9 million which is higher than the presented value for future net cash flows of $1,143.8 million. Please review and revise if necessary, here and elsewhere in your filing, to remove the inconsistency or expand your
 disclosure to explain the circumstances resulting in the positive 10% discount adjustment. Refer to the disclosure requirements in FASB ASC 932-235-50-31 and 50-36.

 Response : The Company respectfully acknowledges the Staff’s comment. The positive 10% annual discount of $253.1 million reflected in the standardized measure calculation is
 driven by the Company’s estimated future abandonment costs. As the anticipated timing of the majority of these abandonment costs is many years in the future, these costs have a much larger impact on the undiscounted future net cash flows as compared
 to their impact when discounting is applied. Due to this fact, as well as lower future cash inflows as a result of relatively lower 2024 SEC pricing, the undiscounted future net cash flows were lower than the discounted standardized measure for the
 year ended December 31, 2024. This results in the positive 10% discount adjustment. Refer to the illustrative table in the Company’s response to Comment #10. below for additional clarification. In future applicable filings to the extent the
 undiscounted future net cash flows are lower than the discounted standardized measure, the Company will include expanded disclosure to explain the circumstances resulting in the positive 10% discount adjustment.

 Alternative Performance Measures, page 150

 8.

 We note your presentation includes the measures Pro forma adjusted EBITDA and Net-debt-to-pro forma adjusted EBITDA. Pleas revise to provide the disclosures and presentation
 requirements to comply with Article 11 of Regulation S-X and Question 100.05 of the Compliance and Disclosure Interpretations on Non-GAAP Financial Measures.

 Response : The Company respectfully acknowledges the Staff’s comment. Pro forma adjusted EBITDA includes adjustments to pro forma the results of certain entities acquired by the
 Company in 2023 and 2024 for the full twelve months of their respective operations as management believes it is helpful to investors to evaluate the Company’s adjusted EBITDA and net-debt-to-adjusted EBITDA on a pro forma basis to give effect to the
 acquisitions. To the extent the Company discloses non-IFRS measures on a pro forma basis in the future, the Company will comply with this comment in future applicable filings.

 9.

 We refer you to PV-10 presented on page 152. Please include a footnote that provides a description of why the adjustment for PV of taxes differs from the amounts presented as
 future income tax expense used to determine the standardized measure presented on page 147.

 Response : The Company respectfully acknowledges the Staff’s comment. The adjustment for PV of taxes on page 152 of the Form 20-F is a discounted amount, while the future income
 tax expense used to determine the standardized measure presented on page 147 of the Form 20-F is undiscounted. The Company will adjust the heading for the total “Future net cash flows” in the standardize measure calculation to “Undiscounted future
 net cash flows” in future applicable filings.

 PV-10, page 152

 10.

 The PV-10 value presented of $1,591.8 million is higher than the total undiscounted future net cash flows of $1,447.7 million (before future income tax expenses) in the
 standardized measure calculation on page 147. If correct, please provide us a detailed explanation. Please review and revise if necessary, here and elsewhere in your filing, to remove the inconsistency or expand your disclosure to explain the
 circumstances resulting in the pre-tax PV-10 value of $1,591.8 million for the year ended December 31, 2024. This comment also applies to the disclosure in Exhibit 15.3.

 Response : The Company respectfully acknowledges the Staff’s comment and advises the Staff that the PV-10 and undiscounted future net cash flows values are correct in the Form
 20-F. The PV-10 value is higher than the total undiscounted future net cash flows due to the Company’s estimated future abandonment costs associated with proved reserves. As the anticipated timing of the majority of these abandonment costs is many
 years in the future, these costs have a much larger impact on the undiscounted future net cash flows as compared to their impact when discounting is applied. Due to this fact, as well as relatively lower 2024 SEC pricing, the undiscounted future net
 cash flows were lower than the discounted pre-tax PV-10 value for the year ended December 31, 2024. In future applicable filings to the extent the PV-10 value is higher than the total undiscounted future net cash flows, the Company will include
 expanded disclosure to explain the circumstances resulting in this situation. For illustrative purposes, please refer to the table below, which reflects the impact of the Company’s estimated future abandonment costs on the PV-10 and undiscounted
 future net cash flows values for the year ended December 31, 2024:

 Net Reserves

 Future Net Cash Flows
 (M$)

 Oil (MBBL)

 NGL (MBBL)

 Gas (MMCF)

 Oil
 Equivalent
 (MBOE)

 Total

 Present
 Value at
 10%

 Total

 Proved Developed Producing

 18,524.2

 103,471.4

 2,895,619.6

 604,598.9

 3,912,957.3

 1,757,032.6

 Estimated Future Abandonment Costs

 -

 -

 -

 -

 (2,465,291.1

 )

 (165,261.0

 )

 Future Net Reserves and Cash Flows

 18,524.2

 103,471.4

 2,895,619.6

 604,598.9

 1,447,666.2

 1,591,771.6

 * * * * *

 If you have any questions with respect to the foregoing or if any additional supplemental information is required by the Staff, please contact Michael Garrett at 205-408-0909 or Hillary H. Holmes of
 Gibson, Dunn & Crutcher LLP at (346) 718-6602.

 Very truly yours,

  /s/ Bradley G. Gray

 Bradley G. Gray

 Chief Financial Officer

 Cc:

 Michael Garrett, Diversified Energy Co PLC

 Ben Sullivan, Diversified Energy Co PLC
 Hillary H. Holmes, Gibson, Dunn & Crutcher LLP
 Nathan S. Rice, PricewaterhouseCoopers LLP