OPAL Fuels (OPAL) S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.3

Consent of Independent Auditor

Beacon RNG LLC

White Plains, New York

We hereby consent to the use in the Prospectus constituting a part of this Registration Statement of our report dated April 15, 2022, relating to the consolidated financial statements of Beacon RNG LLC, which is contained in that Prospectus.

We also consent to the reference to us under the caption “Experts” in the Prospectus.

/s/ BDO USA, LLP

Stamford, Connecticut

April 15, 2022