ERCOT Batch Zero Workshop 6 – Summary
Author: Basit Mushtaq
ERCOT Batch Zero Workshop 6 advanced the technical and policy discussions for the Batch Zero process, with a focus on eligibility determination, long-term transmission deliverability (Year 6), and integration of flexible load constructs such as CLR and BYOG.
The session emphasized resolving key stakeholder concerns and refining design elements related to study validation, CLR, and BYOG.
1. March 4 Eligibility Cut-off:
- Discussion centered on the study validity cutoff (March 4, 2026) and its implications on Batch Zero inclusion.
- ERCOT emphasized a reliability-driven validation check for studies completed after March 4 to prevent over-injection of Base Load beyond system capability.
- Stakeholders broadly opposed retroactive application of the cutoff and associated requirements, citing legal and contractual concerns and misalignment with ongoing PUCT rulemaking (Project 58481).
- Multiple parties recommended shifting to a forward-looking cutoff (e.g., July 10, 2026) to maintain investment certainty and procedural fairness.
- Key takeaway: Clear tension between system reliability safeguards vs. investment certainty, with stakeholders pushing for non-retroactive treatment and ERCOT maintaining need for validation checks.
2. Year 6 Transmission Planning:
Discussion focused on allocation and deliverability of MWs in outer years (Year 6) under Batch Zero.
- ERCOT’s Current Direction:
- MWs are automatically allocated up to requested peak demand by Year 6
- Provides high certainty to developers early in the process
- Relies on ERCOT’s assumption that the 2027 RTP will identify all required network upgrades, and that—based on historical execution—these upgrades will be in place by Year 6
- ERCOT presented alternative allocation approaches to manage uncertainty in long-term transmission readiness.
- Additional MWs are deferred to future batches and allocated once transmission upgrades materialize
- Reduces risk of over-allocation but introduces uncertainty in long-term deliverability
- Cypress Creek highlighted a critical refinement risk where withdrawal of loads may create new constraints, making previously feasible allocations undeliverable without upgrades.
- Key takeaway: The discussion highlighted a trade-off between ERCOT’s current approach prioritizing early certainty (via RTP-based assumptions) and an alternative approach emphasizing capacity-based allocation, with stakeholders focusing on how Year 6 deliverability risk should be managed.
3. Design Elements for CLR (Controllable Load Resource)
Discussion focused on ERCOT’s evolving CLR framework, including the introduction of Provisional CLR (PCLR) as an interim construct ahead of a separate PGRR targeted for April 8.
- PCLR as an interim construct:
- Allows loads to participate in Batch Zero while committing to partial firm service (Low Power Consumption – LPC) and curtailable portion (non-firm load)
- Requires submission of a Declaration of Intent and PCLR-specific data (by July 24), including minimum firm load requirements
- Planning and study treatment:
- PCLRs are evaluated using the same methodology as other loads in Batch Zero studies
- If system can support the requested LPC (firm portion), remaining load may be treated as curtailable
- If even LPC cannot be supported → 0 MW allocation for that year
- ERCOT still studies the full requested MW to identify future transmission upgrades
- Market/operational behavior:
- PCLRs will be subject to a bid capping mechanism in SCED, reflecting their curtailable nature
- Several design aspects remain under discussion, including:
- Limits on maximum consumption
- Participation in ancillary services
- Detailed parameters for bid capping and system implementation
- ERCOT clarified that:
- Designation as PCLR/CLR does not automatically qualify a load as Studied Load in Batch Zero
- Projects must still meet all applicable eligibility and assessment criteria, consistent with other load categories under PGRR145
- Key takeaway: PCLR represents a hybrid planning-operational construct, where loads receive partial firm allocation (LPC) while enabling additional capacity through enforceable curtailment, with full-load deliverability deferred to future transmission upgrades and refinement validation
4. BYOG / Self-Limited Option
Discussion focused on Bring-Your-Own-Generation (BYOG) and Self-Limited Facility (SLF) concepts, as potential pathways to enable load interconnection with limited or zero reliance on transmission capacity.
- Key discussion points:
- Whether 0 MW import (zero withdrawal) configurations should still be required to undergo Batch Zero studies, or could be energized outside the batch process
- How behind-the-meter generation should be represented in Batch Zero steady-state cases, and whether it should be explicitly modeled
- Whether BYOG should be treated as a planning construct or an operational constraint-based approach, similar to CLR/PCLR
- Key takeaway: BYOG/SLF concepts provide a potential pathway for low or zero-grid-dependency interconnection, but key aspects related to study requirements, modeling treatment, and eligibility for bypassing Batch Zero remain under discussion.
5. Stakeholder Comment Themes
- Key stakeholder comments:
- Strong push for grandfathering advanced-stage projects and avoiding duplicate financial obligations.
- Opposition to reliance on unfinalized PUCT rule (58481).
- Concerns regarding non-refundable fees and excessive financial risk.
- Request for parallel processing of SSO and QSA to avoid delays.
Overall Workshop Direction
Workshop #6 focused on resolving key design trade-offs in the Batch Zero framework:
- Reliability vs. investment certainty (study validity and cutoff criteria)
- Planned vs. actual transmission readiness (Year 6 deliverability)
- Firm vs. flexible interconnection models
