(a) A river authority may undertake, sponsor, initiate, coordinate, or otherwise participate in a program intended to conserve electric energy or water, including a program that:
(1) encourages the more efficient use of electric energy or water;
(2) reduces the total use of electric energy or water; or
(3) reduces maximum total electric generating capacity requirements through load management techniques.
(b) A determination by the board of directors of a river authority that a program described by Subsection (a) is intended and expected to accomplish a purpose described by that subsection is conclusive with respect to whether the program serves the stated purpose.