Sec. 9. (a) The fixed property of a light, heat, or power company consists of real property which is not part of the company's right-of-ways, transmission system, or distribution system.
(b) A light, heat, or power company's property which is not described as fixed property in subsection (a) of this section is definite-situs distributable property. This property includes, but is not limited to, turbo-generators, boilers, transformers, transmission lines, distribution lines, and pipe lines.