California Independent System Operator

On October 13, 2025, the California Independent System Operator (CAISO) released its Draft Final Proposal for Interconnection Process Enhancements (IPE) 5.0—continuing its multi-year effort to modernize and streamline the interconnection process for new energy resources. The proposed reforms build on lessons learned from Cluster 15, previous IPE tracks, and stakeholder feedback.

Highlights of CAISO’s

Summary

On March 29, 2024, the California Independent System Operator (CAISO) released the Track 2 final proposal for its Interconnection Process Enhancements (IPE) initiative. The proposed changes in the IPE proposal aim to address the “unprecedented and unsustainable interconnection request volumes” in the CAISO.  CAISO proposes to adopt a zonal approach that prioritizes project interconnection in areas with existing or planned transmission capacity, to cap the number of projects permitted to proceed into the study process at 150% of the available and planned transmission capacity in specific zones, and adopt scoring criteria for eligibility and prioritization in the interconnection study process. Continue Reading CAISO Releases Interconnection Process Enhancements Final Proposal