Ala. Code § 10A-20-15.02
Any corporation which exercises any of the rights conferred by this article shall, after the completion of its works and plants, be under the duty and obligation to the public to manufacture and sell to the public electric current produced at its plants; and any corporation manufacturing, selling, and supplying power, heat, light, or electricity produced by water as a motive force under this article must sell such power, heat, light, or electricity to any person or persons, municipal or other corporations, in order in which requests or demands are made for such light, heat, power, or electricity; provided, that nothing in this section shall be construed to require any corporation to furnish light, heat, power, or electricity to any person or corporation, until satisfied of the financial responsibility of the person or corporation, except in conformity with its reasonable rules and regulations and reasonable prices for the same and except as far as the capacity of its plant will permit.
Ala. Code § 10A-20-15.02 (1975)