Spring Shoulder Markets and Western Transition Activity

North American wholesale electricity markets moved through a spring shoulder week, with public disclosures pointing more to implementation work, scheduled meetings, settlement readiness, and refinement of transmission or interconnection processes than to broad reliability stress. In the West, California ISO continued to advance policy prioritization, interconnection-rights retention, and EDAM and DAME settlement readiness, while SPP’s western-facing calendar showed immediate post-expansion follow-through in both core RTO governance and Markets+ user forums. ERCOT’s public notices similarly reflected a system operating without a major headline emergency, yet still managing the practical demands of maintenance windows, market-system availability, and routine qualification activity. Across much of the footprint, that combination is typical of an orderly shoulder-season interval: fewer weather-driven extremes, but no reduction in the volume of market-design and readiness work that will shape the second half of 2026.