...AEP Texas Inc.'s (AEPTX) ratings reflect the company's low-risk business profile as an electricity transmission and distribution (T&D) company serving retail electricity consumers in Texas. Fitch Ratings views the regulatory construct as favorable for T&D companies operating in the Electric Reliability Council of Texas (ERCOT). AEPTX's positive rating drivers are partially offset by a large capex program in response to service territory growth. AEPTX relies on parent company, American Electric Power Company, Inc. (AEP; BBB+/Stable), for equity contributions and access to short-term liquidity....