(a) This subsection and Subsections (b)-(g) apply only to areas in which each retail electric utility that is authorized to provide retail electric utility service to the area is providing customer choice. For purposes of this subsection, an electric cooperative or a municipally owned electric utility shall be deemed to be providing customer choice if it has approved a resolution adopting customer choice that is effective on January 1, 2002, or effective within 24 months after the date of the resolution adopting customer choice. All other retail electric utilities shall be deemed to be providing customer choice if customer choice will be allowed for customers of the retail electric utility on January 1, 2002. In areas in which each certificated retail electric utility is providing customer choice, the commission, if requested by a retail electric utility, shall examine all areas within the service area of the retail electric utility making the request that are also certificated to one or more other retail electric utilities and, after notice and hearing, shall amend the retail electric utilities’ certificates so that only one retail electric utility is certificated to provide distribution services in any such area. Only retail electric utilities certificated to serve an area on June 1, 1999, may continue to serve the area or portion of the area under an amended certificate issued under this subsection.
(b) This section does not apply in any area in which a municipally owned utility is certificated to provide retail electric utility service if the municipally owned utility serving the area files with the commission by October 1, 2001, a request that areas within the certificated service area of the municipally owned utility remain as presently certificated.

(c) The commission shall enter its order dividing multiply certificated areas within one year of the date a request is received.
(d) In amending certificates under this section, the commission shall take into consideration the factors prescribed by § 37.056.
(e) Notwithstanding § 37.059, the commission shall revoke certificates to the extent necessary to achieve the division of retail electric service areas as provided by this section.
(f) Unless otherwise agreed by the affected retail electric utilities, each retail electric utility shall be allowed to continue to provide service to the location of electricity-consuming facilities it is serving on the date an application for division of the affected multiply certificated service areas is filed. No customer located within the affected multiply certificated service areas shall be permitted to switch from one retail electric utility to another while an application for division of the affected multiply certificated service areas is pending.
(g) If on June 1, 1999, retail service is being provided in an area by another retail electric utility with the written consent of the retail electric utility certificated to serve the area, that consent shall be filed with the commission. On notification of that consent and a request by an affected retail electric utility to amend the relevant certificates, the commission may grant an exception or amend a retail electric utility’s certificate. This provision shall not be construed to limit the commission’s authority to grant exceptions or to amend a retail electric utility’s certificate, upon request and notification, for areas to which retail service is being provided pursuant to written consent granted after June 1, 1999.
(h) The commission may not grant an additional retail electric utility certificate to serve an area if the effect of the grant would cause the area to be multiply certificated unless the commission finds that the certificate holders are not providing service to any part of the area for which a certificate is sought and are not capable of providing adequate service to the area in accordance with applicable standards. However, neither this subsection nor the deadline of June 1, 1999, provided by Subsection (a) shall apply to any application for multiple certification filed with the commission on or before February 1, 1999, and those applications may be processed in accordance with applicable law in effect on the date the application was filed. Applications for multiple certification filed with the commission on or before February 1, 1999, may not be amended to expand the area for which a certificate is sought except for contiguous areas within municipalities that provide consent, as required by § 37.053(b), not later than June 1, 1999.
(i) Notwithstanding any other provision of this section, if requested by a municipally owned utility, the commission shall examine all areas within the municipally owned utility’s service area that are also certificated to one or more other retail electric utilities and, after notice and hearing, may amend the retail electric utilities’ certificates so that only one retail electric utility is certificated to provide distribution services in the area, provided that:
(1) the application is filed with the commission within 12 months of the effective date of this provision and is limited to single certification of the area within the municipality’s boundaries as of February 1, 1999;
(2) the commission preserves the right of an electric utility or an electric cooperative to serve its existing customers, including any property owned or leased by any customer; and
(3) the municipality is a member city of a municipal power agency, as that term is used in § 40.059.