SPP Market Monitor Flags Ramp, Pricing and Resource Adequacy Deficiencies After Three West BAA EEA Events

SPP's Market Monitoring Unit published a post-event analysis of three Energy Emergency Alert (EEA) events in the West BAA (July 20, July 24, and August 9, 2026), identifying systemic deficiencies in rampable capacity, price formation during emergencies, interchange/import reliance, and the absence of a resource adequacy construct since the April 2026 western expansion, and issued a package of market design recommendations.

The West BAA has operated under resource advisory or higher conditions 42% of the time since joining the Integrated Marketplace, with extreme price swings (e.g., $3,591/MWh to -$1,241/MWh MEC) during EEA events, highlighting structural reliability and price-formation risks in a newly expanded real-time market that could recur absent design changes.

This report exposes a fundamental tension in the SPP West BAA launch: the market went live without a resource adequacy construct, and the generation mix (coal, hydro in manual control, solar/wind unable to ramp up) leaves minimal dispatchable ramp despite nameplate capacity nearly double peak load. The MMU's critique of RR801 is particularly notable—it argues the FERC-pending capacity sufficiency obligation could suppress prices and increase import dependence rather than solve the underlying rampable capacity shortage, creating a policy design conflict between short-term capacity adequacy rules and long-term flexibility incentives. The repeated oscillation from scarcity pricing to negative pricing within single EEA events (e.g., EEA3 swinging from $2,091 to -$30/MWh in 53 minutes) signals that contingency reserve deployment and fixed-import reliance are not well integrated into real-time price formation, which is a textbook flexibility market design gap. The recommendations (withholding manual-commitment energy from pricing runs, increasing ramp/uncertainty product requirements, discounting non-firm imports for adequacy credit, tightening PBA/ELCC alignment with real-time availability) collectively point toward a broader SPP West BAA market redesign effort that will likely require multiple FERC filings over an extended period, given the breadth and interdependency of the identified issues.

SPP Open Access Transmission Tariff (OATT) Attachment AE (Sections 6.3.4, 8.4, 8.6.42); FERC Docket ER26-3720 (Revision Request 801); RR746 Capacity Recovery Limit; SIR006 day-ahead must-offer deficiency filing

Sidney DC Tie expected return to service · 1 May 2027

Primary sources