Federal Register #BP-26E

BPA proposes ACS-26 rate schedule revisions for CAISO market charges and credits

Bonneville Power Administration is proposing a limited update to how certain CAISO Energy Imbalance Market charges and credits are allocated under its ACS-26 rate schedules. - Government buyer: Bonneville Power Administration (BPA), U.S. Department of Energy; Transmission Tariff, Rates, and Regulatory Activities. - Proposed change: Revise Section IV.D of rate schedule ACS-26 to suballocate new or modified Neutrality and Uplift Charges and Credits associated with the California Independent System Operator (CAISO) Extended Day Ahead Market. - Impact: The revisions would not change existing transmission rate levels or power rates. - Approval and timing: The proposed revisions require Federal Energy Regulatory Commission (FERC) approval and are intended to take effect in early 2027. - Procurement status: No products are being purchased, and no OEMs, vendors, quantities, or contract value are identified.

Description

Bonneville Power Administration is conducting an expedited rate proceeding under Section 7(i) of the Northwest Power Act to consider limited revisions to its Ancillary and Control Area Services (ACS-26) rate schedules. The changes would provide for suballocation of new or modified Neutrality and Uplift Charges and Credits associated with CAISO’s Energy Imbalance Market. The proposed revisions do not affect current transmission rate levels or power rates, and the proposed effective date is February 1, 2027, subject to Federal Energy Regulatory Commission approval. The notice also provides for a prehearing conference on October 21, 2026, and opportunities for intervention, objections, and public comment.

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