WHITE PLAINS, N.Y. – (March 13, 2025) – OPAL Fuels Inc. (“OPAL Fuels” or the “Company”) (Nasdaq: OPAL), a vertically integrated leader in the capture and conversion of biogas into low carbon intensity renewable natural gas (RNG) and renewable electricity, today announced financial and operating results for the three and twelve months ended December 31, 2024.

“2024 was a solid year for OPAL Fuels, we made strong progress on our operational and strategic objectives and have positioned the company for continued success this year and for many years to come,” said Adam Comora, co-CEO of OPAL Fuels. “We have continued to scale rapidly over the last twelve months. We brought online three large landfill RNG projects totaling 3.8 million MMBtu of annual design capacity and now have 11 in operation. Our total annual design capacity for RNG projects in operation and in construction is now 11.4 million MMBtu. Our disciplined execution and vertical integration continues to drive growth of our intrinsic value as we capitalize on the growing biofuels market."

"Since becoming a public company in 2022, we have, organically, more than tripled our operating production capacity and doubled EBITDA through a combination of converting existing biogas-to-electricity plants into RNG, new RNG projects, and strong growth in our fuel station services segment. Despite near term market volatility, 2025 is expected to be another year of solid growth for OPAL Fuels," continued Comora.

“We're proud of our position as one of the largest integrated RNG operators in the market.” said co-CEO Jonathan Maurer. “OPAL Fuels is a leader in the space and our track record of success makes us a logical choice for feedstock suppliers seeking an operating partner, and fleet customers looking to deploy trucks that are Cleaner, Cheaper, Now.”

"We're excited about our outlook for 2025, our guidance reflects our expectation of executing our business plan as we navigate challenging market conditions. We expect to continue to expand our RNG facility footprint and grow our Fuel Station Services segment," said co-CEO Jonathan Maurer. "The management team remains focused on disciplined execution to drive shareholder value.”

•Revenue for the three and twelve months ended December 31, 2024, was $80.0 million and $300.0 million, respectively, 8% lower and 17% higher, compared to same periods last year.

•Net income (loss) for the three and twelve months ended December 31, 2024, was a net loss of $5.4 million and net income of $14.3 million, respectively, compared to $20.1 million and $127.0 million net income, in the comparable periods last year.1

•Basic net earnings (loss) per share attributable to Class A common shareholders for the three and twelve months ended December 31, 2024, was $(0.05) and $0.02, respectively compared to $0.11 and $0.70 in the comparable periods last year.1

•Adjusted EBITDA2 for the three and twelve months ended December 31, 2024, was $22.6 million and $90.0 million, respectively, compared to $32.0 million and $52.0 million in comparable periods last year.

•At December 31, 2024, RNG Pending Monetization totaled $20.3 million.

•We commenced operations at three landfill RNG projects in 2024, Prince William, Sapphire, and Polk representing an aggregate annual design capacity of 3.6 million MMBtu, increasing the aggregate annual design capacity of our operating RNG projects to 8.8 million MMBtu at year end 2024. Including the projects currently in construction, aggregate annual design capacity is 11.4 million MMBtu.3,4

•RNG produced was 1.1 million and 3.8 million MMBtu, for the three and twelve months ended December 31, 2024, an increase of 38% and 41% compared to the prior-year periods.

•The Fuel Station Services segment sold, dispensed, and serviced an aggregate of 41.9 million and 150.2 million GGEs of transportation fuel for the three and twelve months ended December 31, 2024, an increase of 19% and 13% compared to the prior-year periods. Of this amount, RNG dispensed as a transportation fuel was 19.3 million and 74.0 million GGEs, respectively an increase of 54% and 69% compared to the prior-year periods.

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1 Net income for the twelve months ended December, 2023 included a $122.9 million non-cash gain on deconsolidation of variable interest entities ("VIEs").

2 This is a non-GAAP measure. A reconciliation of non-GAAP financial measure to comparable GAAP measure has been provided in the financial tables included in this press release. An explanation of this measure and how it is calculated is also included below under the heading “Non-GAAP Financial Measures."

3 Design capacity is the annual design output for each facility and may not reflect actual production from the projects, which depends on many variables including, but not limited to, quantity and quality of the biogas, operational up-time of the facility, and actual productivity of the facility.

4 Represents OPAL Fuels' proportional share with respect to RNG projects owned with joint venture partners.

•Three landfill RNG projects entered construction in 2024, Burlington, Cottonwood, and Kirby, representing an aggregate annual design capacity of 1.8 million MMBtu for OPAL's share.

•The Atlantic RNG project is expected to commence commercial operations in the third quarter of 2025. This project represents approximately 0.3 million MMBtu for OPAL Fuels’ 50% ownership share of annual design capacity.

•Completion of construction at two dairy projects in California (Hilltop and Vander Schaaf) continues to be delayed due to a dispute with the Engineering, Procurement and Construction contractor over a series of change order requests.5

•At December 31, 2024 we had 47 stations under construction including 20 owned by OPAL.

•The Company currently estimates that Adjusted EBITDA for the full year 2025 will range between $90 million and $110 million which assumes a $2.60/gallon D3 RIN price.

•Adjusted EBITDA is based on an RNG production range of 5.0 to 5.4 million MMBtu.

•We anticipate 2025 Adjusted EBITDA from our Fuel Station Services segment to grow by 30%-50% compared to 2024.

•We anticipate putting into construction approximately 2.0 million annual MMBtu of RNG annual design capacity in 2025.

•Adjusted EBITDA does not include approximately $50 million of anticipated ITC sale proceeds from recent RNG projects, which would be included in operating cash flow and net income in 2025.

5 For more information, please see the Company’s Annual Report on Form 10-K for the twelve months ended December 31, 2024.

(1) Excludes revenues from equity method investments.

(2) Includes selling, general and administrative expenses, depreciation and amortization expenses, impairment and income (loss) from equity method investments. Please refer to the Statement of Operations at the end of the press release for additional information.

(3) Net income for twelve months ended December 31, 2023 included a $122.9 million non-cash gain on deconsolidation of variable interest entities ("VIEs").

(4) This is a non-GAAP financial measure. A reconciliation of this non-GAAP financial measure to a comparable GAAP financial measure has been provided in the financial tables included in this press release. An explanation of this measure and how it is calculated is also included below under the heading “Non-GAAP Financial Measures.”

(5) Includes incremental virtual pipeline costs (i.e., actual costs less anticipated operating costs of a permanent interconnection) on our Prince William RNG project which are temporary in nature and expected to be incurred until mid-2025 when the permanent interconnection is expected to be operational.

(1) Net income from equity method investments represents our portion of the net income from equity method investments including $1.5 million and $5.8 million of amortization expense related to basis differences for the three and twelve months ended December 31, 2024 and $1.4 million and $3.1 million for the three and twelve months ended December 31, 2023.

(1) Design Capacity for RNG facilities is measured as the volume of feedstock biogas that the facility is capable of accepting at the inlet and processing during the associated period. Design Capacity is presented as OPAL’s ownership share (i.e., net of joint venture partners’ ownership) of the facility and is calculated based on the number of days in the period. New facilities that come online during a quarter are pro-rated for the number of days in commercial operation.

(2) Inlet Design Capacity Utilization is measured as the Volume of Inlet Gas for a period, divided by the total Design Capacity for such period. The Volume of Inlet Gas varies over time depending on, among other factors, (i) the quantity and quality of waste deposited at the landfill, (ii) waste management practices by the landfill, and (iii) the construction, operations and maintenance of the landfill gas collection system used to recover the landfill gas. The Design Capacity for each facility will typically be correlated to the amount of landfill gas expected to be generated by the landfill during the term of the related gas rights agreement. The Company expects Inlet Design Capacity Utilization to be in the range of 75-85% on an aggregate basis over the next several years. Typically, newer facilities perform at the lower end of this range and demonstrate increasing utilization as they mature and the biogas resource increases at open landfills.

(3) Utilization of Inlet Gas is measured as RNG Fuel Volume Produced divided by the Volume of Inlet Gas. Utilization of Inlet Gas varies over time depending on availability and efficiency of the facility and the quality of landfill gas (i.e., concentrations of methane, oxygen, nitrogen, and other gases). The Company generally expects Utilization of Inlet Gas to be in the range of 80% to 90%.

(4) Data not available for the Company's dairy projects, i.e., Sunoma and Biotown.

(1) Reflects OPAL’s ownership share of un-monetized environmental attributes associated with our RNG production (i.e., net of joint venture partners’ ownership) including equity method investments

(2) Reflects OPAL’s ownership share of RIN and LCFS credits (i.e., net of joint venture partners’ ownership) including equity method investments and presented net of discounts and any direct transaction costs such as dispensing fees, third-party royalties and transaction costs as applicable.

As of December 31, 2024, our liquidity was $223.6 million, consisting of $178.4 million of unused capacity under our $450 million senior secured credit facility, $20.9 million of unused capacity under the associated revolver, and $24.3 million of cash, cash equivalents, and short-term investments. In 2025 we expect approximately $50 million of cash proceeds from ITC sales bolstering both our earnings and operating cash flow to continue to fund our investments. As we disclosed in recent filings we agreed to a 12-month extension of the draw period on the credit facility.

We believe our liquidity, operating cash flows, and anticipated sources of capital are sufficient to meet our expected 2025 funding needs.

During the twelve months ended December 31, 2024, OPAL Fuels invested $127.2 across RNG projects in construction and OPAL Fuels proprietary fueling stations in construction as compared to $113.8 million in the prior year.

In addition, for the twelve months ended December 31, 2024, the Company's portion of capital expenditures in unconsolidated entities was $35.2 million. This represents our share of capital expenditures incurred by equity method investments.

A webcast to review OPAL Fuels’ Fourth Quarter and Full Year 2024 results is being held tomorrow, March 14, 2024 at 11:00AM EDT.

Materials to be discussed in the webcast will be available before the call on the Company's website.

Participants may access the call at https://edge.media-server.com/mmc/p/49xbizz5. Investors can also listen to a webcast of the presentation on the company’s Investor Relations website at https://investors.opalfuels.com/news-events/events-presentations.

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“Environmental Attributes” refer to federal, state, and local government incentives in the United States, provided in the form of Renewable Identification Numbers, Renewable Energy Credits, Low Carbon Fuel Standard credits, rebates, tax credits and other incentives to end users, distributors, system integrators and manufacturers of renewable energy projects that promote the use of renewable energy.

“GGE” refers to Gasoline gallon equivalent. The conversion ratio is 1 MMBtu of natural gas equal to 7.74 GGE.

“LFG” refers to landfill gas.

“MMBtu” refers to British thermal units.

“Renewable Power” refers to electricity generated from renewable sources.

“RNG” refers to renewable natural gas.

“D3” refers to cellulosic biofuel with a 60% GHG reduction requirement.

“RIN” refers to Renewal Identification Numbers.

“EPA” refers to Environmental Protection Agency.

OPAL Fuels Inc. (Nasdaq: OPAL) is a leader in the capture and conversion of biogas into low carbon intensity RNG and renewable electricity. OPAL Fuels is also a leader in the marketing and distribution of RNG to heavy duty trucking and other hard to de-carbonize industrial sectors. For additional information, and to learn more about OPAL Fuels and how it is leading the effort to capture North America’s naturally occurring methane and decarbonize the economy, please visit www.opalfuels.com.

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Certain statements in this communication may be considered forward-looking statements within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts and generally relate to future events or OPAL Fuels’ (the “Company”) future financial or other performance metrics. In some cases, you can identify forward-looking statements by terminology such as “believe,” “may,” “will,” “potentially,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “would,” “project,” “target,” “plan,” “expect,” or the negatives of these terms or variations of them or similar terminology. Such forward-looking statements are subject to risks and uncertainties, which could cause actual results to differ materially from those expressed or implied by such forward-looking statements.

New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by the Company and its management, as the case may be, are inherently uncertain and subject to material change. Factors that may cause actual results to differ materially from current expectations include various factors beyond management’s control, including but not limited to general economic conditions and other risks, uncertainties and factors set forth in the sections entitled “Risk Factors” and “Forward-Looking Statements and Risk Factor Summary” in the Company's Annual Report on Form 10-K filed on March 17, 2025, and other filings the Company makes with the Securities and Exchange Commission. Nothing in this communication should be regarded as a representation by any person that the forward-looking statements set forth herein will be achieved or that any of the contemplated results of such forward-looking statements will be achieved. You should not place undue reliance on forward-looking statements in this communication, which speak only as of the date they are made and are qualified in their entirety by reference to the cautionary statements herein. The Company expressly disclaims any obligations or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Company’s expectations with respect thereto or any change in events, conditions, or circumstances on which any statement is based.

This communication is for informational purposes only and is neither an offer to purchase, nor a solicitation of an offer to sell, subscribe for or buy, any securities, nor shall there be any sale, issuance or transfer or securities in any jurisdiction in contravention of applicable law. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

Todd Firestone

Vice President Investor Relations & Corporate Development

914-705-4001

investors@opalfuels.com

ICR, Inc.

OPALFuelsPR@icrinc.com

This release includes various financial measures that are non-GAAP financial measures as defined under the rules of the Securities and Exchange Commission. We believe these measures provide important supplemental information to investors to use in evaluating ongoing operating results. We use these measures, together with accounting principles generally accepted in the United States ("GAAP" or "U.S. GAAP"), for internal managerial purposes and as a means to evaluate period-to-period comparisons. However, we do not, and you should not, rely on non-GAAP financial measures alone as measures of our performance. We believe that non-GAAP financial measures reflect an additional way of viewing aspects of our operations, that when taken together with GAAP results and the reconciliations to corresponding GAAP financial measures that we also provide give a more complete understanding of factors and trends affecting our business. We strongly encourage you to review all of our financial statements and publicly filed reports in their entirety and to not solely rely on any single non-GAAP financial measure.

Non-GAAP financial measures are limited as an analytical tool and should not be considered in isolation from, or as a substitute for, the Company's GAAP results. The Company expects to continue reporting non-GAAP financial measures, adjusting for the items described below (and/or other items that may arise in the future as the Company's management deems appropriate), and the Company expects to continue to incur expenses, charges or gains like the non-GAAP adjustments described below. Accordingly, unless expressly stated otherwise, the exclusion of these and other similar items in the presentation of non-GAAP financial measures should not be construed as an inference that these costs are unusual, infrequent, or non-recurring. These Non-GAAP financial measures are not recognized terms under GAAP and do not purport to be alternatives to GAAP net income or any other GAAP measure as indicators of operating performance. Moreover, because not all companies use identical measures and calculations, the Company's presentation of Non-GAAP financial measures may not be comparable to other similarly titled measures used by other companies. We strongly encourage you to review all of our financial statements and publicly filed reports in their entirety and to not solely rely on any single non-GAAP financial measure.

To supplement the Company's unaudited condensed consolidated financial statements presented in accordance with GAAP, the Company uses a non-GAAP financial measure that it calls adjusted EBITDA ("Adjusted EBITDA"). This non-GAAP measure adjusts net income for interest and financing expense, net, loss on debt extinguishment, net (income) loss attributable to non-controlling interests, depreciation, amortization and accretion expense, adjustments to reflect Adjusted EBITDA from equity method investments, loss on warrant exchange, unrealized (gain) loss on derivative instruments, non-cash charges, one-time non-recurring expenses, major maintenance on renewable power, RNG development and virtual pipeline costs, ITC proceeds and gain on deconsolidation of VIEs.

Management believes this non-GAAP measure provides meaningful supplemental information about the Company's performance, for the following reasons: (1) it allows for greater transparency with respect to key metrics used by management to assess the Company's operating performance and make financial and operational decisions; (2) the measure excludes the effect of items that management believes are not directly attributable to the Company's core operating performance and may obscure trends in the business; (3) the measure better aligns revenues with expenses; and (4) the measure is used by institutional investors and the analyst community to help analyze the Company's business. In future quarters, the Company may adjust for other expenditures, charges or gains to present non-GAAP financial measures that the Company's management believes are indicative of the Company's core operating performance.

Non-GAAP financial measures are limited as an analytical tool and should not be considered in isolation from, or as a substitute for, the Company's GAAP results. The Company expects to continue reporting non-GAAP financial measures, adjusting for the items described below (and/or other items that may arise in the future as the Company's management deems appropriate), and the Company expects to continue to incur expenses, charges or gains like the non-GAAP adjustments described below. Accordingly, unless expressly stated otherwise, the exclusion of these and other similar items in the presentation of non-GAAP financial measures should not be construed as an inference that these costs are unusual, infrequent, or non-recurring. Adjusted EBITDA is not a recognized term under GAAP and does not purport to be an alternative to GAAP net income or any other GAAP measure as an indicator of operating performance. Moreover, because not all companies use identical measures and calculations, the Company's presentation of Adjusted EBITDA may not be comparable to other similarly titled measures used by other companies.

The following table presents the reconciliation of our Net income to Adjusted EBITDA:

(1) Net income (loss) by segment is included in our quarterly report on Form 10 K.

(2) Loss on debt extinguishment relates to assignment of our senior secured credit facility to Paragon and debt restructuring related to OPAL Term Loan.

(3) Includes interest, depreciation, amortization and accretion incurred on equity method investments.

(4) Unrealized (gain) loss on derivative instruments includes change in fair value of interest rate swaps, commodity swaps, earnout liabilities and put option on a forward purchase agreement.

(5) Non-cash charges include stock-based compensation expense, certain expenses included in selling, general and administrative expenses relating to employee benefit accruals, inventory write down charges included in cost of sales - RNG fuel and loss on disposal of assets.

(6) One-time non-recurring charges include (i) certain expenses related to development expenses on our RNG facilities such as lease expenses and virtual pipeline costs (in 2023), incurred during construction phase that could not be capitalized per GAAP.

(7) Relates to virtual pipeline costs on our Prince William facility. These are temporary transportation costs incurred until a permanent pipeline is completed, which we currently anticipate in the second half of 2025. The costs are decreased by estimated costs of permanent pipeline.