Preventing Undue Discrimination and Preference in Transmission Service

Order 890 significantly strengthened and reformed the Open Access Transmission Tariff (OATT) framework first established in Order 888, finding that undue discrimination persisted across the industry. FERC implemented 26 specific reforms addressing transparency, coordination, and the procedures utilities must follow when providing transmission service. Key changes included improved processes for requesting transmission service, enhanced standards for coordination between transmission providers and customers, and clearer rules governing ancillary services. The order was designed to create a more transparent, efficient, and genuinely non-discriminatory transmission system for all market participants.