Specification of infrastructure bonds under section 80L authorises REC bonds with serialised issuance and varying interest rates. The Central Government specifies REC Infrastructure Bonds as eligible under Section 80L, issued by the Rural Electrification Corporation Limited as debentures identified by distinctive serial numbers and a uniform face value, with differentiated interest rates linked to particular serial ranges. The bonds are authorised to be raised to a prescribed aggregate amount, including an initial allocation and an oversubscription option, and may be issued in one or more branches by public or private placement. A later notification substituted the original interest-rate descriptions for certain serial ranges.