TC-25 Tariff Proceeding

Section 9 of Bonneville’s Open Access Transmission Tariff (Tariff) provides that the Bonneville Administrator may use the procedures set forth in Section 212(i)(2)(A) of the Federal Power Act to modify terms and conditions of the Tariff.

BPA will engage customers through a series of workshops in February through May 2023 to discuss potential reforms to its Standard Large Generator Interconnection Procedures (LGIP) to develop and implement a regional solution to improve BPA's interconnection process. BPA may conduct a TC-25 Terms and Conditions Tariff Proceeding to set or modify the terms and conditions of BPA’s Open Access Transmission Tariff specifically related to these generator interconnection reforms.

Information on the TC-25 pre-proceeding workshops, including workshop materials, will be posted here.  See BPA Event calendar for scheduled workshop dates.