conductor technology that uses recently developed technology or materials such as a composite core and such other future advances as determined by the Secretary, in consultation with the Secretary of Energy. (5) Superconducting transmission line The term superconducting transmission line means a transmission line that conducts all of its current over a super-conducting material. (e) Related transmission property For purposes of this section— (1) In general The term related transmission property means any of the following: (A) Transmission property used for interconnection or generator tie-line Any electric power transmission line which is— (i) placed in service after the date of enactment of this section, (ii) primarily used— (I) as a generator interconnection tie line at an associated facility that extends from the secondary (high) side of a generator step-up transformer to the point of interconnection with the host transmission owner from interconnecting new generation resources or facilities to the electric grid, or (II) for network upgrades associated with the interconnection of new generation resources or facilities to the electric grid, (iii) primarily used for one or more purposes described in subsection (d)(2)(B), and (iv) capable of transmitting electricity at a voltage of not less than 230 kilovolts. (B) Grid enhancing technology Any grid enhancing technology property used in the operation of the electric power transmission line described in paragraph (2) or (3) of subsection (d). (C) Subcomponents Any conductors or cables, towers, insulators, reactors, capacitors, circuit breakers, static VAR compensators, static synchronous compensators, power converters, transformers, synchronous condensers, braking resistors, and any ancillary facilities and equipment necessary for the proper operation of the electric power transmission line described in paragraph (2) or (3) of subsection (d) or for the proper operation of any property described in subsection (d)(2). (2) Grid enhancing technology property The term