Conn. Agencies Regs. § 16-1-41
In any proceeding in which a rate change is proposed, the public service company's direct case shall be limited substantially to the statement of application and the exhibits and other materials annexed thereto unless the commissioners or the presiding officer shall rule otherwise for good cause shown. All prepared written testimony filed with the statement of application shall be received in evidence with the same force and effect as though it were stated orally by the witnesses, provided that each such witness shall be present at the hearing at which such prepared written testimony is offered, shall adopt such written testimony under oath, and shall be made available for cross examination as directed by the commissioners or the presiding officer.
Conn. Agencies Regs. § 16-1-41