; (B) labor costs associated with the installation of such hardware, only if wages for such labor are paid at rates not less than those prevailing on similar labor in the locality of installation, as determined by the Secretary of Labor under subchapter IV of chapter 31 of title 40, United States Code (commonly referred to as the “Davis-Bacon Act”); (C) material costs associated with the installation of such hardware, including expenses involving electrical equipment and necessary upgrades or modifications to the electrical grid and associated infrastructure required for the installation of such hardware; (D) permit costs associated with the installation of such hardware; and (E) the cost of an on-site energy storage system. (2) Electric vehicle The term electric vehicle means a vehicle that derives all or part of its power from electricity. (3) Multi-port charger The term multi-port charger means electric vehicle supply equipment capable of charging more than one electric vehicle simultaneously. (4) Electric vehicle supply equipment The term electric vehicle supply equipment means a charger connected to the electric grid that supplies electricity to an electric vehicle. (5) Level 2 charging equipment The term level 2 charging equipment means electric vehicle supply equipment that provides an alternating current power source at a minimum of 240-volts. (6) Networked direct current fast charging equipment The term networked direct current fast charging equipment means electric vehicle supply equipment that provides a direct current power source at a minimum of 50 kilowatts and is enabled to connect to a network to facilitate data collection and access. (7) Networked electric vehicle charging station The term networked electric vehicle charging station means a charging station that is enabled to connect to a network to facilitate data collection and access. (d) Authorization of Appropriations There is authorized to be appropriated to carry out this Act $100,000,000 for each of fiscal years 2021 through 2025.