day-ahead market
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Energy Security
Western Energy Imbalance Market Gains Three Participants, Including First Generation-Only Entity
The Western Energy Imbalance Market (WEIM), a real-time energy market operated by the California Independent System Operator (CAISO), has gained three new participants, including its first generation-only entity. CAISO on April 5 announced the Western Area Power Administration (WAPA) Desert Southwest region, El Paso Electric (EPE), and AVANGRID have formally begun participation in the WEIM. […]
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O&M
How Does the Western Energy Imbalance Market Work?
The California Independent System Operator’s Energy Imbalance Market (EIM) is a real-time energy market, the first of its kind in the western U.S. EIM’s advanced market systems automatically find low-cost