The board of supervisors of any county may construct, acquire, and develop works constructed after September 29, 1981, for the generation of hydroelectric power, and works constructed after the effective date of the amendments to this section enacted by the Statutes of 1982 for the generation of power produced by wind energy, and transmission lines for the conveyance thereof, and may operate and maintain the works, or contract for such operation or maintenance. The construction of the plant or plants and transmission lines may be financed by any method of financing county works.