As used in this chapter:

1. (A) "Public utility" means every one as defined in divisions (A), (C), (D), (E), (F), (G), (H), and (M) of section 4905.03 of the Revised Code, including all public utilities that operate their utilities not for profit, except the following:

   1. (1) Electric light companies that operate their utilities not for profit;
   2. (2) Public utilities, other than telephone companies, that are owned and operated exclusively by and solely for the utilities' customers;
   3. (3) Public utilities that are owned or operated by any municipal corporation;
   4. (4) Railroads as defined in sections 4907.02 and 4907.03 of the Revised Code.
2. (B) "Residential consumer" means urban, suburban, and rural patrons of public utilities insofar as their needs for utility services are limited to their residence.