Summary:
The Desert Southwest Region (DSW) of the Western Area Power Administration (WAPA) proposes extending, without any changes, the existing balancing authority area and transmission provider services formula rates for Western Area Lower Colorado Balancing Authority (WALC) through September 30, 2031. The existing formula rates under Rate Schedules DSW-SD4 (Scheduling, System Control, and Dispatch), DSW- RS4 (Reactive Supply and Voltage Control), DSW-FR4 (Regulation and Frequency Response), DSW-SPR4 (Spinning Reserve), DSW-SUR4 (Supplemental Reserves), DSW-EI4 (Energy Imbalance), DSW-GI2 (Generator Imbalance), DSW-TL1 (Transmission Losses), DSW-UUI (Unreserved Use Penalties), DSW-EIM1T (Administrative Service), DSW-EIM4T (Energy Imbalance Service), and DSW-EIM9T (Generator Imbalance Service) expire on September 30, 2026.