§ 361. Service beyond territorial limits. 1. Whenever a surplus of
such public utility service exists over the amount thereof required by
the municipal corporation and the residents thereof, such municipality
may sell such surplus outside the municipal corporation to persons,
public or private corporations or other municipal corporations. Any such
municipal corporation, by agreement with any other municipal corporation
which is authorized to exercise the powers specified in the preceding
section, may extend such service to such other municipal corporation
under such terms and conditions as may be agreed upon between them
provided that if at the time of such extension, a public utility service
is actually being furnished in such other municipal corporation, such
extension shall not be effected without the approval of the public
service commission.

2. Agreements may also be made between two or more municipal
corporations, authorized as provided in this article to exercise the
powers specified in the preceding section, for the joint ownership,
leasing, construction, acquisition, use or operation of a public utility
service, within the combined territorial limits of such contracting
parties. The method of operation of and the rates, rentals and charges
for such service and the procedure for their collection shall be fixed
by such agreements.