ArcLight Clean Transition Corp.

200 Clarendon Street, 55th Floor
Boston, Massachusetts 02116

September 18, 2020

VIA EDGAR

Securities and Exchange Commission
Division of Corporation Finance

100 F Street, N.E.
Washington, D.C. 20549

Attention: Pamela Howell

Re:ArcLight Clean Transition Corp.
Registration Statement on Form S-1
File No. 333-248625

Ladies and Gentlemen:

Pursuant to Rule 461 under the Securities Act of 1933, as amended, ArcLight Clean Transition Corp. (the “Company”) hereby requests acceleration of the effective date of the above referenced Registration Statement to 4:00 p.m., Eastern Time, on September 22, 2020, or as soon thereafter as practicable, or at such other time as the Company or its outside counsel, Kirkland & Ellis LLP, request by telephone that such Registration Statement be declared effective.

Please contact Christian O. Nagler, of Kirkland & Ellis LLP, special counsel to the Company, at (212) 446-4660, as soon as the Registration Statement has been declared effective, or if you have any other questions or concerns regarding this matter.

  Sincerely,
   
   
  /s/ John F. Erhard
  John F. Erhard
  President and Chief Executive Officer