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December 5, 2025

Western RTO

© RTO Insider
Monroe’s Western Outreach Pays Dividends for SPP
Former SPP COO Carl Monroe's decades of outreach to Western Interconnection entities are evident in the RTO's various markets and service offerings in the West.
Shutterstock
Amended ‘Pathways’ Bill Boosts — and Complicates — Calif. Protections
The latest version of California’s “Pathways” bill strips out a previous amendment that would have given state regulators authority to order utilities to withdraw from the RO under certain circumstances.
Black Hills Energy
CAISO’s WEIM Plucks Black Hills Utilities from SPP’s WEIS
CAISO scored a geographically small but symbolically significant victory with the announcement that two Black Hills Energy subsidiaries will move to the ISO’s Western Energy Imbalance Market.
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Busy Summer Ahead for Pathways Initiative
Participants in the West-Wide Governance Pathways Initiative face a busy meeting schedule this summer as the group’s leaders look to advance on parallel fronts to develop a Western “regional organization.”
© RTO Insider LLC
SPP Board of Directors/MC Briefs: May 7, 2024
SPP CEO Barbara Sugg warned the RTO’s board and stakeholders that the grid operator faces new and stronger headwinds, even as it met its corporate goals’ first-quarter milestones.
West-Wide Governance Pathways Initiative
Pathways Initiative Rejected for $800K in DOE Funding
The West-Wide Governance Pathways Initiative applied for the money in January in response to a DOE Funding Opportunity Announcement, seeking two tranches of $400,000 each to be disbursed over two years to help support the effort build an independent Western RTO.
© RTO Insider LLC
SPP Markets+ Participants Executive Committee Briefs: Jan. 23-24, 2024
Stakeholders have discussed the likelihood that there may be two day-ahead markets in the West, CAISO’s Extended Day-ahead Market and SPP’s Markets+ and/or RTO West.
SPP
SPP’s MPEC Approves Markets+ Governance Plan
SPP met a major milestone in its Western efforts as a Markets+ committee approved the day-ahead market’s proposed governing document.
© RTO Insider LLC
CREPC-WIRAB Conference Tackles Western Market Developments
Many at the joint conference focused on the eventual result of the contest between CAISO's Extended Day-Ahead Market and SPP's Markets+ to organize the West's electricity market.
© RTO Insider LLC
Idaho PUC Declines to Join Western RTO Governance Effort

The Idaho Public Utilities Commission last week said it will not join with other state regulators in an initiative to lay the groundwork for an independent RTO designed to serve the entire Western Interconnection.


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