The Market System Enhancement (MSE) program focuses on transforming MISO’s market technology into a more flexible, more secure system that allows for faster adoption of new technologies. It is one of four critical pillars of MISO’s Reliability Imperative.

Major projects include:

• Day-Ahead Market Clearing Engine (DA-MCE) and the Real-Time Market Clearing Engine (RT-MCE): reengineer the Market System using modern software design patterns to meet modularity, security, and performance requirements. RT-MCE is expected to be completed in 2026.
• MISO Model Manager: enables members to provide modeling data to MISO to maintain accurate power system models. 
• Operator Interface: assists operators and stakeholders with communication and reliability. 
• Upgraded Energy Management System, allows operators to monitor and analyze the health of the Bulk Electric System and to fulfill MISO’s NERC-certified roles. 
• New Market User Interface: allows market participants to transact with the MISO Energy & Ancillary Services Market. 

MSE initiatives better support the region’s evolving generation mix and future processes for operating electricity markets. Quarterly program updates occur at Market Subcommittee meetings, Board of Directors meetings, and Customer Readiness Symposium (CRS) meetings.