Requires electric public utilities to upgrade certain portions of electric transmission and distribution system with advanced conductors.

S 674 requires New Jersey's electric utilities to upgrade portions of their transmission and distribution systems with "advanced conductors" during routine maintenance or dedicated projects, where practical. These conductors reduce energy loss by at least 10% compared to standard wires by using more efficient designs (like carbon fiber cores). Utilities must assess their systems within one year of the law's effective date and propose specific upgrade locations to the Board of Public Utilities. They may also request approval to recover the costs of these upgrades through customer electricity bills.