Texas Utilities Code - UTIL § 37.152. Grounds for Reduction of Service

(a) Unless the commission issues a certificate that the present and future convenience and necessity will not be adversely affected, a certificate holder may not discontinue, reduce, or impair service to any part of the holder's certificated service area except for:

(b) A discontinuance, reduction, or impairment of service must be in compliance with and subject to any condition or restriction the commission prescribes.