§ 130. Contracts with corporations for supply of gas. The municipal
officers authorized by law to contract in behalf of any city of the
first class, for the lighting of its streets may, from time to time, in
the manner, upon the terms and with the conditions hereinafter provided
contract in behalf of such city with any corporation or corporations
then supplying gas therein for a supply of gas to such city, for and
during such specified period not exceeding fifteen years as shall by
such municipal officers be deemed to be for the best interests of such
city and of the inhabitants thereof.