Transaction Details

Footnotes

Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock. | The securities are held of record by Energy Capital Partners Management, LP ("ECP Management"). ECP Management is controlled by its business unit committee, which consists of Douglas Kimmelman, Peter Labbat, Tyler Reeder, Murray Karp, Raoul Hughes and Xavier Robert, all of whom collectively share the power to vote and dispose of the securities held of record by ECP Management. As a result of these relationships, each of the foregoing individuals may be deemed to share beneficial ownership of the securities held of record by ECP Management. Each such individual disclaims beneficial ownership of these securities except to the extent of their pecuniary interest therein. By virtue of certain relationships among them, ECP Management may be deemed a group under Section 13(d) of the Exchange Act with ECP ControlCo, LLC. Each of them disclaims any such group membership.