Summary of CAISO ICUG held February 17, 2026, covering load-serving alignment, Southern California Edison substation data requests, and key Cluster 16 interconnection questions.
California ISO
The February 17, CAISO ICUG call focused on several topics shaping the current CAISO interconnection landscape, with particular emphasis on load-serving alignment (LSA) considerations, utility-specific data requests, and stakeholder questions related to the Cluster 16 interconnection cycle.
The discussion reflected ongoing efforts to align interconnection processes with state policy direction, utility planning practices, and accelerating large-load and generation development across the CAISO balancing area.
Governor’s Executive Order and Load-Serving Alignment (LSA)
CAISO provided an update related to the Governor’s Executive Order and its relevance to load-serving alignment within the interconnection process. Discussion centered on how state-level policy objectives may influence CAISO’s planning assumptions, coordination with load-serving entities, and information requirements used in interconnection studies.
Stakeholders sought additional clarity on how executive-level policy direction is expected to translate into operational or procedural changes, including whether new data expectations or coordination steps may emerge for interconnection customers as part of LSA implementation. The conversation highlighted the growing intersection between policy-driven load growth and traditional interconnection study frameworks.
Southern California Edison (SCE) Substation Information Request
The CAISO ICUG call also included discussion of a substation-level information request associated with Southern California Edison. CAISO and stakeholders reviewed the nature of the request and its intended purpose within the context of load-serving alignment and interconnection evaluation.
Stakeholders raised questions regarding:
- The scope and consistency of substation data requests across utilities
- How substation-specific information may be used in interconnection studies or planning coordination
- Expectations around data availability, timing, and applicability to interconnection customers
The discussion underscored ongoing interest in improving transparency around how utility-provided data interfaces with CAISO’s interconnection and planning analyses.
Cluster 16 Interconnection Questions (LSA Context)
The meeting concluded with a question-and-answer segment focused on the Cluster 16 interconnection cycle. Stakeholders raised questions related to study assumptions, process mechanics, and how load-serving alignment considerations may intersect with Cluster 16 evaluations.
Topics discussed reflected broader stakeholder concerns around:
- Visibility into study inputs and modeling assumptions
- Treatment of load-related factors within the Cluster 16 framework
- Process clarity as CAISO continues to refine interconnection approaches in response to increasing load and policy complexity
The discussion reinforced Cluster 16 as an active area of stakeholder focus as studies progress and implementation details continue to evolve.
CIASO ICUG Key Takeaways
- Load-serving alignment remains a central theme in CAISO interconnection discussions, influenced by state policy direction and accelerating load growth.
- Utility-specific data requests, particularly at the substation level, are an area of active clarification and stakeholder interest.
- Cluster 16 continues to generate questions related to study assumptions, transparency, and process alignment with evolving policy and planning considerations.
CAISO noted that ICUG feedback supports ongoing refinement of interconnection processes, with additional clarification expected through future stakeholder meetings and posted materials.
If you’re evaluating a large-load or co-located project in CAISO, contact ZEG to get early clarity before commitments are locked in. For more on CAISO from this month, explore our meeting summary covering CAISO’s Large Load Information Session here.
CAISO ICUG References and Meeting Materials
agenda-interconnection-customer-user-group-feb-17-2026.pdf
