...Sale Date: April 4, 2018. Series: Series 2018A and 2018B. Purpose: To finance an energy savings project and to refund outstanding bonds. Security: Bonds issued by the Philadelphia Authority for Industrial Development (PAID) are payable from annual service fee or lease rental payments by the city under non-cancellable agreements. The city's obligation to make payments required by the agreements is absolute and unconditional. State law and the city charter obligate the City Council to appropriate annual payments through final maturity....