Exhibit 4

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing of this Statement on Schedule 13D including any amendments thereto. This Joint Filing Agreement may be executed in any number of counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument.

The execution and filing of this agreement shall not be construed as an admission that the below-named parties are a group or have acted as a group.

Dated: August 1, 2022
	ArcLight CTC Holdings II, L.P.
	By: ACTC Holdings GP II, LLC, its General Partner
	By: ArcLight Capital Holdings, LLC, its Manager
	By: ACHP II, L.P., its Managing Member
	By: ACH GP, LLC, its General Partner

By:	/s/ Daniel R. Revers
Name:	Daniel R. Revers
Title:	Manager

Daniel R. Revers
By:	/s/ Daniel R. Revers