ERCOT / PRS today

Why it matters

Today's PRS vote is the last stakeholder vote before the May 19-20 TAC, which is the de-facto industry-blessing step before ERCOT board approval — meaning whatever clears PRS today is structurally the rule that governs how ~119 GW of pending Texas large-load applications get triaged for the next 5+ years. This is the live wedge already covered in ercot-pclr-batch-zero.md and ercot-pclr-batch-zero-timeline.md, and Cliff's submission-validator product is designed against exactly this rule set. Three things to watch on today's vote: (1) Does PCLR get adopted as filed (LPC-firm + curtailable above LPC) or modified by stakeholder amendments? Crusoe and TEBA have filed substantive comments suggesting the LPC threshold and curtailment-economics math need revision. The submission-validator code path needs to know what the final LPC math is by close of business today — anyone who runs validation on July 23 (the day before the Declaration of Intent deadline) using the wrong LPC math will produce wrong scores. (2) Does the Year-6 deliverability deferral hold? The PGRR145 base case defers full-load deliverability to future transmission upgrades after the Year-6 mark, which lets ERCOT approve a higher headline GW number now while pushing the firm-MW reckoning down the road. If stakeholders strip the deferral language out at PRS, the headline 119 GW gets a haircut today and the Cliff calculator's firm-equivalent-MW-underwrite.md base case needs to retake its delta. (3) The PRS vote outcome is also the immediate read-through to ercot-puc-58317-sb6-implementation-workshop.md (Texas SB 6) and ercot-puc-58777-load-realization-docket.md — both PUC dockets reference Batch Zero by name, and any PRS-to-PUC inconsistency that emerges from today's vote becomes a discrete docket-arbitrage opportunity for sites that filed pre-Batch-Zero. Pull the meeting recording tonight; the ROS vote tomorrow (May 7) is the second confirmation point.