Bonneville Power Tweaks Rates, Holds Public Hearings
Published Date: 10/7/2026
Notice
Summary
Bonneville Power Administration is updating its ACS-26 rate schedules to handle new charges and credits from California’s Energy Imbalance Market. This change affects customers who use these power services and could impact their bills starting February 1, 2027, once approved. Public hearings and comment opportunities are open in October 2026 to make sure everyone’s voice is heard.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 0 costs, 1 mixed.
New CAISO EIM Charges Passed to Customers
Bonneville proposes to revise its ACS-26 rate schedules to suballocate new or modified CAISO Energy Imbalance Market (EIM) "Neutrality" and "Uplift" charges and credits to its customers under section IV.D of ACS-26. These changes could affect customers' bills beginning February 1, 2027 if approved by the Federal Energy Regulatory Commission.
Transmission and Power Rates Remain Unchanged
Bonneville states the proposed ACS-26 revisions are limited to suballocating CAISO EIM charges and credits and do not affect current transmission rate levels or power rates. Existing transmission and power rate levels remain in place under this proposal.
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Key Dates
Department and Agencies
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