MISO will provide the details of each LRZ no later than September 1st of the year prior to a Planning Year.
The geographic boundaries of each of the LRZs will be based upon analysis that considers:

  1. The electrical boundaries of Local Balancing Authorities
  2. State boundaries
  3. Relative strength of transmission interconnections between Local Balancing Authorities
  4. Results of previous LOLE studies
  5. Relative size of LRZs
  6. Market seams compatibility

MISO may re-evaluate the boundaries of LRZs if there are changes within the MISO Region including, but not limited to, any of the preceding factors, significant changes in membership, the Transmission System and/or Resources.
For more information, please see BPM 11 Resource Adequacy  

Level 100 Resource Adequacy