Markets+
Markets+ is more than just a day-ahead market offering. It’s a bundle of services that will centralize day-ahead and real-time unit commitment and dispatch and pave the way for the reliable integration of a rapidly growing fleet of renewable generation.
Working together, we’ve developed a market design that goes beyond current imbalance market service offerings, enhances reliability, increases participant value, equitably compensates participants and incorporates their diverse perspectives.
The Markets+ program has entered Phase Two – Implementation. Potential participants are encouraged to submit an RMS ticket promptly to begin the registration and onboarding process. Indicating intent to participate by the following key registration deadlines is essential to ensure inclusion in the October 2027 go-live:
- Balancing Authorities: September 1, 2025
- Transmission Service Providers: October 1, 2025
- Market Participants: April 1, 2026
Participants seeking to join after October 2027 are still welcome to submit an RMS ticket to express their interest in Markets+.
Markets+ Phase Two Funding Entities:
*As of October 27, 2025
- Arizona Public Service
- Bonneville Power Administration
- Chelan County PUD
- Grant County PUD
- Powerex
- Puget Sound Energy
- Salt River Project
- Tacoma Power
- Tri-State G&T
- Tucson Electric Power
- Xcel/Public Service Company of Colorado
For a list of participants, click here.
Quick links:
- Visit the Markets+ Stakeholder page for events and materials related to the Markets+ stakeholder groups
- Markets+ Tariff
- To receive emails related to Markets+ groups and task forces, subscribe to each group's exploder. For general Markets+ information, subscribe to the SPPMarkets+ Exploder on your account page. (Learn more about Exploders here.)
- Market+ Project Timeline
Latest Markets+ Phase Two News:
- February 14, 2025 | Markets+ phase two development confirmed with western market commitments
- January 16, 2025 | SPP’s Markets+ tariff receives FERC approval
- July 31, 2024 | FERC requests additional information regarding Markets+ tariff filing; SPP coordinating response
- June 5, 2024 | SPP files expanded regional transmission organization tariff to include western entities
- April 15, 2024 | Western utilities express support for continued Markets+ development
- April 1, 2024 | Southwest Power Pool completes and files Markets+ tariff with collaboration and support from western stakeholders
