52 Pa. Code § 57.76 : PUBLIC UTILITIES — PUBLIC UTILITY COMMISSION — FIXED SERVICE UTILITIES — Electric Service — COMMISSION REVIEW OF SITING AND CONSTRUCTION OF ELECTRIC TRANSMISSION LINES — Determination and order

(a) The Commission will issue its order, with its opinion, if any, either granting or denying the application, in whole or in part, as filed or upon the terms, conditions or modifications, of the location, construction, operation or maintenance of the line as the Commission may deem appropriate. The Commission will not grant the application, either as proposed or as modified, unless it finds and determines as to the proposed HV line:
(1) That there is a need for it.
(2) That it will not create an unreasonable risk of danger to the health and safety of the public.
(3) That it is in compliance with applicable statutes and regulations providing for the protection of the natural resources of this Commonwealth.
(4) That it will have minimum adverse environmental impact, considering the electric power needs of the public, the state of available technology and the available alternatives.
(b) A Commission order granting a siting application will be deemed to include a grant of authority, subject to the provisions of law, to locate and construct the proposed HV transmission line within a corridor consisting of the area of 500 feet on each side of the centerline of the proposed HV transmission line unless the applicant requests and the Commission approves a corridor of a different size. A proposed HV transmission line may not be constructed outside the corridor, except upon petition to and approval by the Commission.

52 Pa. Code § 57.76