(a) If the joint review team has been notified by the agencies with authority to grant such approvals or perform such actions, or by a reviewing court, that all agency actions and approvals on the project decision schedules relating to a priority energy project:
(1) Have been granted;
(2) Have been performed; or
(3) Are not necessary;
(b) A certificate issued by the team under subsection (a) shall constitute conclusive evidence in any judicial or executive proceeding that all actions and approvals necessary to the completion and initial operation of the project have been granted for the duration and subject to the conditions specified on the certificate.