OPAL Fuels Appoints Darrell Birck as Executive Vice President of Biogas

 Birck to scale biogas operations, bringing over two decades of energy industry engineering, construction, and business optimization experience

OPAL Fuels Inc. (Nasdaq: OPAL) announced today the appointment of Darrell P. Birck as Executive Vice President of Biogas. The appointment is effective immediately and Darrell will report to Co-CEOs, Adam Comora and Jonathan Maurer.

In this role, Darrell will be responsible for leading OPAL Fuels’ biogas construction and operations businesses, while driving the company's mission of providing “Cleaner, Cheaper, Now” fuel solutions.

"I am pleased to welcome Darrell to OPAL Fuels as he brings a wealth of experience in biofuels, chemical manufacturing, and process optimization," said Jonathan Maurer, Co-CEO of OPAL Fuels. "Darrell joins the team at an important time for OPAL Fuels, as we now have 11 renewable natural gas (RNG) facilities in operation and have doubled our annual design capacity over the past two years. His expertise in driving operational efficiencies will be critical to executing against our strategic growth objectives over the next several years - bringing efficiencies to the construction and operations processes in the RNG and renewable power space.”

"I look forward to joining and accelerating the execution and deployment of projects at OPAL Fuels, delivering on-time and on-budget results, and enhancing the company’s overall ability to capture and convert biogas into low carbon intensity RNG and renewable power,” said Darrell. “I look forward to building on the existing foundation of success and market leadership.”

Darrell brings over 25 years of proven leadership experience across the energy and industrial sectors. Prior to joining OPAL Fuels, Darrell served for over a decade at Koch Industries, including as Senior Vice President for Project Operations at DEPCOM Power, a leading solar energy solutions provider. Before DEPCOM, Darrell was a Senior Director of Operations at Georgia Pacific Corrugated, one of the world's leading manufacturers of tissue, pulp, packaging, and building products, and Vice President of Operations for Biofuels & Ingredients at Flint Hill Resources, overseeing eight biorefineries. Previously, Darrell spent 19 years at Cytec Solvay Group, a specialty chemicals and materials technology company, serving in various positions, most recently as a multi plant manager.

About OPAL Fuels Inc. 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 harmful methane emissions and decarbonize the economy, please visit www.OPALfuels.com.

Forward-Looking Statements 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’s”) 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 “Cautionary Statement Regarding Forward-Looking Statements” in the Company’s annual report on Form 10-K and quarterly reports on Form 10-Q, and other filings it 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. Except as required by law, 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.

Disclaimer 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.

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OPAL Fuels Investors Todd Firestone Vice President Investor Relations and Corporate Development 914-705-4001 [e-mail]

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