Exhibit 99.1
JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
DATE: February 9, 2022
| NGP SWITCHBACK II, LLC |
| /s/ James E. Mutrie |
| Name: James E. Mutrie |
| Title: Co-Chief Executive Officer and Manager |
| SCOTT K. MCNEILL |
| /s/ Scott K. McNeill |
| Scott K. McNeill |
| JAMES E. MUTRIE |
| /s/ James E. Mutrie |
| James E. Mutrie |
| CHRISTOPHER G. CARTER |
| /s/ Christopher G. Carter |
| Christopher G. Carter |
| SCOTT GIESELMAN |
| /s/ Scott Gieselman |
| Scott Gieselman |
| SAM STOUTNER |
| /s/ Sam Stoutner |
| Sam Stoutner |
| PHILIP J. DEUTCH |
| /s/ Philip J. Deutch |
| Philip J. Deutch |
| NGP ETP III INVESTMENTS, LLC |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| NGP XII US HOLDINGS, L.P. |
| By: NGP XII Holdings GP, L.L.C., its general partner |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| NGP XII HOLDINGS GP, L.L.C. |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| NGP NATURAL RESOURCES XII, L.P. |
| By: G.F.W. Energy XII, L.P., its general partner |
| By: GFW XII, L.L.C., its general partner |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| G.F.W. ENERGY XII, L.P. |
| By: GFW XII, L.L.C., its general partner |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| GFW XII, L.L.C. |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |
| NGP ENERGY CAPITAL MANAGEMENT, L.L.C. |
| /s/ Christopher G. Carter |
| Name: Christopher G. Carter |
| Title: Authorized Person |