US · MARKET DESIGN

CAISO / West

How the electricity market is organised in CAISO / West: the operators and regulator, the markets that apply here, and the developments changing them.

Markets that apply

WEIM/EDAM Ancillary services DA energy (LMP)RT energy (LMP)

US nodal markets operated in this footprint.

Developments

2 tracked developments touching CAISO / West.

02 OCT 2026

Portland General Electric officially begins participation in CAISO's Extended Day-Ahead Market

Go-live · ENERGY MARKETS · United States – Pacific Northwest / California (Western Interconnection)

18 SEPT 2026

NV Energy signs agreement to join CAISO's Extended Day-Ahead Market (EDAM), targeting 2028 start

Implementation · ENERGY MARKETS · United States – Western Interconnection (Nevada, California)