The term "distribution facilities" as used in Section 37-14-4 shall include distribution lines and other facilities constructed or installed by the electric supplier in the area to which the purchase option applies, for the rendering of retail electric service except (i) meters, (ii) distribution transformers of voltages not compatible with those of the acquiring electric supplier, (iii) substations of such a voltage that are not compatible with operations of the acquiring electric supplier, (iv) facilities for provision of service by the secondary supplier to premises the electric load of which such secondary supplier may continue to serve under Section 37-14-4(3), and (v) such facilities designated by the supplier as necessary to continue its service in an area not subject to the purchase option herein or to serve such supplier's own load.