30 Tex. Admin. Code § 291.114
Any retail public utility which possesses or is required by law to possess a certificate of convenience and necessity or a person who possesses facilities used to provide utility service must provide continuous and adequate service to every customer and every qualified applicant for service whose primary point of use is within the certificated area and may not discontinue, reduce or impair utility service except for:
Source Note:The provisions of this §291.114 adopted to be effective January 10, 1996, 21 TexReg 114.