Day-Ahead Market

On May 9, 2025, BPA issued its Day-Ahead Market Policy which established the agency’s intent to pursue participation in Southwest Power Pool’s Markets+ day-ahead market.
BPA’s Day-Ahead Market Policy is timely, necessary, and critical to preserve and enhance the benefits of the Federal Columbia River Power System and Federal Columbia River Transmission System. Following an extensive multi-year public process, BPA has determined that day-ahead market participation will allow for lowest-cost resource dispatch, provide continued access to trading partners in the day-ahead timeframe, and allow for optimization of a broader resource mix to serve load which will better ensure system reliability.

The Policy establishes the scope for future implementation decisions related to Markets+, including cost allocation, rates, open access transmission tariff terms and conditions, and ultimately a decision to become a market participant. Because it will take several years to implement day-ahead market participation, BPA has established its business rationale and intent now to set clear expectations for the scope of subsequent rate and tariff proceedings and mitigate uncertainty for customers, sovereigns and stakeholders.

Day-Ahead Market Policy

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