Overview
- EDAM is now live with PacifiCorp as the first participant, linking CAISO with service areas in California, Oregon, Washington, Utah, Idaho, and Wyoming.
- It creates a shared marketplace that schedules generation and transmission a day in advance to lock in lower-cost power and curb renewable curtailment.
- CAISO removed transmission wheeling charges between participating areas, cutting the cost to send solar, wind, and hydro across state lines.
- New Day-Ahead Market Enhancements add Imbalance Reserves that pay batteries and other flexible resources to be ready for fast swings in solar output.
- Portland General Electric plans to join in fall 2026, with LADWP and Turlock Irrigation District slated for 2027, extending the market’s reach.