(a) When the Company is required by any political subdivision of the state or the United States, or any agency thereof, to place new facilities underground or to relocate existing facilities underground, or to otherwise relocate existing facilities, the cost of such placement or relocation shall be recovered by the Company in the manner hereinafter provided.
(b) The political subdivision or agency which imposes the requirement for relocation or undergrounding should pay the adjusted cost thereof in advance. In the absence of such payment the Company may recover, within a period of five years, such adjusted cost by means of a surcharge applied upon the bills of all customers whose electric service delivery points are situated within the political subdivision.