With respect to service in all areas outside the corporate limits of municipalities, electric suppliers shall have rights and be subject to restrictions as follows:

1. (1) Every electric supplier shall have the right to serve:

   1. (a) All premises being served by it, or to which any of its facilities for service are attached on July 1, 1969.
   2. (b) Subject to paragraph (d) (i) of this subsection, all premises initially requiring electric service after July 1, 1969, which are located wholly within three hundred feet of such electric supplier's lines as such lines exist on July 1, 1969.
   3. (c) Subject to paragraph (d) (i) of this subsection, all premises initially requiring electric service after July 1, 1969, which are located wholly within three hundred feet of lines that such electric supplier constructs to serve consumers that it has the right to serve or acquires after July 1, 1969; provided, however, that an electric supplier shall not have the right to serve premises wholly within a service area assigned to another electric supplier pursuant to Section 58-27-640 from a line constructed after the date of such assignment.

   4. (d) If chosen by the consumer, any premises initially requiring electric service after July 1, 1969,

      1. (i) Which are located wholly or partially within three hundred feet of the lines of such electric supplier and also wholly or partially within three hundred feet of the lines of another electric supplier, as each of such supplier's lines exist on July 1, 1969 or as extended to serve consumers that the supplier has the right to serve or as acquired after July 1, 1969,
      2. (ii) Which are not located wholly within three hundred feet of the lines of any electric supplier and are not located partially within three hundred feet of the lines of two or more electric suppliers, unless such premises are located wholly or partially within an area assigned to an electric supplier pursuant to Section 58-27-640,
      3. (iii) Which are located partially within a service area assigned to such electric supplier and partially within a service area assigned to another electric supplier pursuant to Section 58-27-640 or are located partially within a service area assigned to such electric supplier pursuant to Section 58-27-640 and partially within three hundred feet of the lines of another electric supplier, or are located partially within three hundred feet of the lines of such electric supplier, as such lines exist on July 1, 1969, or as extended to serve consumers it has the right to serve or as acquired after that date, and partially within a service area assigned to another electric supplier pursuant to Section 58-27-640, and
      4. (iv) Which are located only partially within a service area assigned to one electric supplier pursuant to Section 58-27-640 and are located wholly outside the service area assigned to other electric suppliers and are located wholly more than three hundred feet from other electric suppliers' lines, and any electric supplier not so chosen by the consumer in any of the situations described in this paragraph (d) shall not thereafter furnish service to such premises. The choice of the consumer in the situations described in this paragraph (d) shall be controlling, and the Public Service Commission shall have no authority to order any other supplier to serve such consumer, except as provided in Section 58-27-660.
   5. (e) All premises located wholly within the service area assigned to it pursuant to Section 58-27-640.
2. (2) Any electrical utility shall have the right to furnish electric service to any industrial premises initially requiring electric service after July 1, 1969 if requested in writing to provide such service and the connected load for initial full plant operation at such industrial premises is 750 kilowatts or larger, whether or not such industry is located wholly within three hundred feet of the lines of, or wholly within an area assigned, pursuant to Section 58-27-640 to an electric cooperative; provided, however, that no other consumer whose premises are located wholly within three hundred feet of the lines of, or wholly within an area assigned to, an electric cooperative may be served from a line or lines of the utility constructed to serve such industrial premises, except another such industrial premises. If an electrical utility is chosen to serve industrial premises pursuant to this subsection (2), no other electric suppliers shall thereafter furnish service to such premises.
3. (3) No electric supplier shall furnish temporary electric service for the construction of premises which it would not have the right to serve under this section if such premises were already constructed. The construction of lines for, and the furnishing of, temporary service for the construction of premises which any other electric supplier, if chosen by the consumer, would have the right to serve if such premises were already constructed, shall not impair the right of such other electric supplier to furnish service to such premises after the construction thereof, if then chosen by the consumer; nor, unless the consumer chooses to have such premises served by the supplier which furnished the temporary service, shall the furnishing of such temporary service or the construction of a line therefor impair the right of any other electric supplier to furnish service to any other premises which, without regard to the construction of such temporary service line, it has the right to serve.
4. (4) No electric supplier shall furnish electric service to any premises in this State outside the limits of any incorporated city or town except as permitted by this section; provided, that nothing in this section shall restrict the right of an electric supplier to furnish electric service to its own premises or to exchange or interchange electric energy with, purchase electric energy from or sell electric energy to any other electric supplier.
5. (5) In extending electric service to a consumer an electric supplier will, insofar as possible, construct its facilities in accordance with good utility practices.
6. (6) Any electric cooperative which is engaged primarily in the furnishing of electricity for resale to other electric cooperatives shall have the right to furnish such electricity for resale to all electric cooperatives but shall not furnish electric service to any other customers or premises.
7. (7) Upon consolidation of the units of government within any county, pursuant to the Constitution of this State, existing municipal electric plants or systems within such county may continue in operation under the consolidated political subdivision and shall be subject to this chapter except within those areas as provided for in Section 58-27-20. For the purposes of this chapter a consolidated political subdivision shall not be deemed a municipality and the corporate limits of municipalities merged into the consolidated political subdivision shall be deemed to cease to exist upon consolidation except for the purposes of Sections 58-27-20 and 58-27-630.