Attachment 1
RTRP Historical Timeline Highlights
The following provides a short timeline of the events that lead to the approval of the RTRP.
June 2006 – The California Independent System Operation (CAISO), which is the independent organization responsible for planning the statewide transmission grid, conducted studies concluding a need for the RTRP.
February 2013 – After several years of design, community outreach and consideration, the Riverside City Council certified Final Environmental Impact Report (EIR) for a fully above ground RTRP.
April 2015 – Southern California Edison (SCE) filed a Certificate of Public Convenience and Necessity (CPCN) application with the California Public Utilities Commission (CPUC) for approval to construct the project.
January 2017 – SCE’s CPCN application was deemed complete by the CPUC and the CPUC began consideration of the project.
Beginning 2018 through 2020 – A Supplemental EIR covering a limited portion of the RTRP route was published by the CPUC for public review. After the CPUC conducted community outreach, communications, and consideration of the environmental impacts of the project, the CPUC subsequently approved the Supplemental EIR in March 2020.
Beginning 2018 through 2019 – RPU staff provided testimony to the CPUC on the need for the RTRP based on support from the City Council at that time including testimony on the regional importance of the project, current system conditions, and alternatives.
March 2020 – The CPUC granted SCE a CPCN for RTRP, authorizing SCE to construct RTRP as it is currently designed (see the project description below). Funding for the RTRP project was also approved for the portion of the project from SCE’s Miraloma Substation (outside the City) to the new Wilderness (SCE portion) and Wildlife Substations (City portion) in the amount of $521 million. The cost of the project would be incorporated into Statewide transmission costs (transmission access charges) that all customers in the state pay for. The City’s portion of the transmission access charge is 1.7% which translates to approximately $9 million of the project total). In addition, it is anticipated that the City will incur $200 million to redesign and upgrade the City’s electrical distribution system citywide. (Please note that work on the internal system upgrades is underway to provide for a resilient citywide distribution system funded by the approved reliability charge that is on each RPU customer bill.) March 2020 – Upon the granting of the CPCN, SCE and RPU initiated the necessary actions to construct the RTRP as approved by the CPUC. The RTRP was anticipated at that time to be completed by 2026.
March 2022 – Upon actions by the Riverside City Council (City Council actions described below), SCE paused work on the RTRP due to their concern that their ratepayer customers would incur.
Riverside Transmission Reliability Project ● Page 2