Entergy utility operating companies completed the integration of their transmission system into the Midcontinent Independent System Operator (MISO). Entergy's utility operating companies — Entergy Arkansas, Entergy Mississippi, Entergy Texas, Entergy Louisiana, Entergy Gulf States Louisiana, and Entergy New Orleans — have been working for more than two years to plan and prepare for the transition. With the integration into MISO, these functions will now be managed by MISO across its newly-expanded regional footprint.