conversion of existing street light into energy efficient led light in 14 tps trichy district conversion of existing street lights into energy efficient led lights and operation and maintenance of the street lighting system for a period of ten years in 14 nos town panchayats trichy district , buy back value for the 40 w florescent tube lamp fitting (ftl) removed for replacement of led lamp fittings including the cost of removed fittings, lamps, and other components related to ftl with the responsibility of transportation and proper reuse or disposal. , buy back value for the 24/36w compressed florescent lamp fitting (cfl) removed for replacement of led lamp fittings including the cost of removed fittings, lamps, and other components related to ftl with the responsibility of transportation and proper reuse or disposal. , buy back value for 250 w sodium vapor lamp (svl) fitting removed for replacement of led lamp fittings including the cost of removed fittings, lamps, and other components related to ftl with the responsibility of transportation and proper reuse or disposal. , buy back value for the 400 w sodium vapor lamp (svl) / metal halloid lamp (mhl) fitting removed for replacement of led lamp fittings including the cost of removed fittings, lamps, and other components related to ftl with the responsibility of transportation and proper reuse or disposal.