Public utility structures such as electrical substations, pumping stations, treatment facilities and line, pipes and similar transmission facilities shall be considered as permitted uses in any zone. New, expanded or extension uses shall be subject to site plan review by the Planning Board except that transmission lines, pipes and similar facilities using existing public or private rights-of-way are exempt from such review.

Extension of electric, gas, and other utility distribution lines to new residential buildings within an approved subdivision having three or more building lots, or to new multiple-occupancy or townhouse structures shall be made underground. Such extensions of service shall be made by the utility in accordance with the provisions governing and regulating the facility.