SDCL § 9-39-2: Agreement with state or other governmental units for cooperative exercise of statutory powers and duties.

Any municipal corporation which had a municipal electrical plant, or electrical distribution system or electrical generating plant, or a combination thereof, in existence, or authorized, on July 1, 1961, may, by action of the governing body thereof, enter into an agreement with any such other governmental unit or units or with the state or any department or agency thereof, for the joint or cooperative exercise of any power or duty required or authorized by statute, and as a part of such agreement may provide a plan for prorating any expenditures involved.