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ERCOT Queue Brief: September 2026 report
What changed in the ERCOT generation interconnection queue this month, county by county: new requests, withdrawals, stage changes, the crowded points of interconnection, slipping schedules, and the rules and dates that moved. Every figure is from ERCOT's own report or the document linked; every county links to its page on this site for the full table.
Jump to: Numbers · New · Withdrawn · Moved forward · Crowded POIs · Slipping · Rules · Dates
Download the PDF Excel: every active request, by county The spreadsheet has the issue's tables and all 1,789 active requests with stage and this month's change.
The month in numbers
Between ERCOT's August 2026 and September 2026 reports: 27 new requests (11,125 MW), 48 withdrawn (8,680 MW), net +2,445 MW; 38 requests moved to a later stage: 20 went from study to a signed interconnection agreement, 19 posted financial security (11 did both in one month), and 10 were approved for energization or synchronization. The report lists 1,789 active requests in all.
New requests by type: 13 solar, 5 battery storage, 3 wind, 3 gas combined cycle, 1 other (ercot lists the fuel as "mwh"; the request name says energy storage), 1 gas turbine, 1 nuclear. Withdrawn by type: 25 battery storage, 19 solar, 2 wind, 1 gas engines, 1 gas combined cycle. Counties with the most new requests: Throckmorton (3), Harris (2), Pecos (2), Brazoria (2), Fisher (2), Kent (2), Victoria (2).
New requests
The largest of the 27 requests that appear for the first time in the September 2026 report, as ERCOT lists them. A new request is a study position, not a project.
Scroll the table sideways to see every column.
| Request and point of interconnection | County | Type | MW | Target date |
|---|---|---|---|---|
| Brazos Energy Security28INR0456 · Tap 345 kV (Bus #1048) Tonkawa Switch – (Bus #11050) Dusty Road | Fisher | Gas combined cycle | 3,000 | Sep 2030 |
| Blue Energy Center - Phase 3 – Steam Stage 233INR0007 · Tap 345kV 80286 DULCE7A - 8676 STATIC7A | Victoria | Nuclear | 1,320 | Jun 2033 |
| Wolf Bone North Energy Center29INR0354 · TNMP Cowpen 345kV Substation POIB 38044 (4 mile transmission line w… | Reeves | Gas combined cycle | 1,174 | Feb 2031 |
| Blue Energy Center- Phase 1a - Gas30INR0150 · Tap 345kV 80286 DULCE7A - 8676 STATIC7A | Victoria | Gas turbine | 780 | May 2030 |
| Titus Sienta Solar26INR0230 · Tap 138kV 1239 Coyanosa - 11238 Blair Lake Sub | Pecos | Solar | 502 | Apr 2029 |
| Black Mountain Briscoe Gas29INR0397 · 23914, Tule Canyon Substation, 345 kV | Briscoe | Gas combined cycle | 495 | Sep 2029 |
| Horizon Ridge Wind30INR0128 · POIB is 131853 NOTSW_1_8 - the Notrees SW Substation - Project incl… | Winkler | Wind | 407 | Apr 2030 |
| Longview Wind26INR0530 · Venturi (Bus #59923) | Dawson | Wind | 353 | Dec 2028 |
| Myrtle Solar Repower27INR0636 · 42110 Angleton 138kV | Brazoria | Solar | 314 | Jun 2027 |
| SunRustler Solar28INR0520 · 11082 MAVRKDRW_8 138kV | Culberson | Solar | 301 | Jun 2028 |
| Rugged Prairie Wind29INR0399 · Tap 345kV BUS #11305 Dermott- BUS #60706 Kirchhef | Fisher | Wind | 294 | Dec 2029 |
| Mandolin Solar III SLF29INR0224 · Tap 345kV 80355 Del Sol - 80227 Rapido | Starr | Solar | 250 | Jun 2029 |
Withdrawn
The largest of the 48 requests in the August 2026 report that are absent from September 2026. ERCOT does not publish the reason; a withdrawal frees a study position at that point of interconnection.
Scroll the table sideways to see every column.
| Request | County | Type | MW |
|---|---|---|---|
| Wolf Bone North Energy Center (OLD)29INR0162 | Reeves | Gas combined cycle | 1,204 |
| Axis Ridge Wind28INR0113 | Sutton | Wind | 392 |
| Sombrero Solar25INR0057 | Schleicher | Solar | 352 |
| Photo Solar 225INR0195 | Uvalde | Solar | 300 |
| Grapefruit Solar27INR0118 | Hidalgo | Solar | 291 |
| Charolais Solar21INR0380 | Matagorda | Solar | 262 |
| Skeeter Solar29INR0026 | Jones | Solar | 251 |
| Lutum Wind20INR0029 | Clay | Wind | 242 |
| Razorbill Solar22INR0244 | Matagorda | Solar | 240 |
| Vazlon Solar SLF28INR0101 | La Salle | Solar | 211 |
| Pearl Crescent Solar21INR0349 | Colorado | Solar | 208 |
| Sunlit Pines BESS SLF27INR0228 | Nacogdoches | Battery storage | 208 |
1 withdrawn request (Wolf Bone North Energy Center (OLD)) shares a name with a new request this month; ERCOT's report does not say why a request was replaced.
Moved forward
Requests whose stage advanced between the two reports, largest first. Stage labels follow ERCOT's report: approved for energization and approved for synchronization are ERCOT's milestones; agreement signed and security posted are read from its agreement and security columns.
Scroll the table sideways to see every column.
| Request | County | Type | MW | Stage change |
|---|---|---|---|---|
| Elk Ridge Solar28INR0114 | Pecos | Solar | 503 | in study → signed, security posted |
| MRR Solar30INR0053 | Pecos | Solar | 500 | in study → signed, security posted |
| Gregory Power Development SLF29INR0068 | San Patricio | Gas combined cycle | 470 | in study → agreement signed |
| Paint Rock Wind27INR0108 | Concho | Wind | 379 | in study → agreement signed |
| Oak Tree Energy Storage27INR0091 | Lavaca | Battery storage | 310 | in study → agreement signed |
| Gardner Draw Solar27INR0355 | Glasscock | Solar | 310 | agreement signed → signed, security posted |
| Cenizo Solar29INR0219 | Webb | Solar | 301 | in study → agreement signed |
| Wisdom Solar SLF27INR0438 | Pecos | Solar | 299 | in study → agreement signed |
| New Hickory Solar20INR0236 | Jackson | Solar | 209 | approved for energization → approved for synchronization |
| Caesar Storage29INR0132 | Borden | Battery storage | 206 | in study → signed, security posted |
| Soda Lake BESS 2 SLF24INR0383 | Crane | Battery storage | 205 | in study → agreement signed |
| Tri-X BESS 1 SLF28INR0389 | Crane | Battery storage | 205 | in study → agreement signed |
| Limewood Solar23INR0249 | Bell | Solar | 205 | approved for energization → approved for synchronization |
| Apache Hill BESS25INR0231 | Hood | Battery storage | 201 | signed, security posted → approved for energization |
Crowded points of interconnection
The substations with the most active requests in the September 2026 report, matched on ERCOT's PSS/E bus number rather than the exact wording of the POI column, so a tap off a line counts toward both of its ends and "60404 SOLSTICE" and "AEP Solstice Substation #60404" count together. Direct = requests naming the bus itself; the rest are on tap lines into it. Requests on the same bus compete for the same transmission capacity and each one's study carries the others' assumptions, but in ERCOT every request has its own study and generators do not share network-upgrade costs: the transmission provider builds the upgrades and recovers them through transmission rates. Each county page lists the requests behind its own crowded buses.
Scroll the table sideways to see every column.
| Substation (PSS/E bus) | Counties | Requests | Direct | MW |
|---|---|---|---|---|
| Solstice (60404) 345 kV | Pecos, Reeves | 23 | 8 | 13,000 |
| RILEY7A (6101) 345 kV | Baylor, Foard, Hardeman, Wichita and more | 22 | 8 | 9,936 |
| Navarro (68091) 345 kV | Ellis, Freestone, Hill, Navarro | 22 | 1 | 5,873 |
| Tnp One (39950) 345 kV | Bell, Milam, Robertson | 22 | 4 | 3,995 |
| Cruce (80079) 345 kV | Duval, Jim Hogg, Starr, Webb | 21 | 1 | 6,554 |
| San Miguel (5901) 345 kV | Atascosa, Duval, McMullen, Wilson | 20 | 0 | 5,476 |
| Elm Creek (5133) 345 kV | DeWitt, Gonzales, Guadalupe, Wilson | 19 | 0 | 4,695 |
| Brown (1444) 345 kV | Brown, Coleman, Mills, Runnels | 19 | 2 | 4,694 |
| STP (5915) 345 kV | DeWitt, Gonzales, Guadalupe, Lavaca and more | 17 | 1 | 5,264 |
| CENIZO7C (80225) 345 kV | Jim Hogg, Zapata | 16 | 0 | 4,321 |
| Cottonwood (59904) 345 kV | Cottle, Crosby, Dickens, Kent and more | 16 | 3 | 3,924 |
| Del Sol (80355) 345 kV | Jim Hogg, Starr | 16 | 2 | 3,856 |
Schedules slipping
21 active requests (2,640 MW) carry a target commercial-operation date that had passed by the end of September 2026 without approval for energization. ERCOT keeps the developer's last reported date until the developer changes it, so these are schedules that moved, not projects that were built. Most in: Nolan (2), Upton (2), Reeves (2), Palo Pinto (1), Kent (1), Jack (1).
Rules that moved
Changes a developer in ERCOT should have on file this month, each linked to the document.
- ERCOT paused the Batch Zero study process on Aug 3, 2026 and plans to file its Batch Zero Eligibility Verification Report Dec 10, 2026. (ERCOT, Batch Zero Verification and Audit PUCT presentation, Aug 20, 2026)
- Only ~18% of 290 large-load dynamic models ERCOT reviewed were acceptable on first review. (ERCOT, Batch Zero Verification and Audit PUCT presentation, Aug 20, 2026)
- PUCT adopted the final large-load interconnection rule on September 18, 2026 (Project 58481), standardizing requirements for loads of 75 MW or more; the draft's non-refundable $50,000/MW fee was dropped in favor of a flat $100,000 study fee, with $50,000 per MW of requested capacity posted as financial security before studies begin. (White & Case client alert, Sept 2026)
- The final PUCT rule gives large loads a 24-month grace period spanning the energization schedule. (White & Case client alert, Sept 2026)
- On September 21, 2026 the Governor asked TCEQ to suspend issuance of permits sought by data centers until ERCOT finishes its large-load audit and the Texas Water Development Board completes water-impact evaluations. (White & Case client alert, Sept 2026)
- All SGIAs executed on or after January 1, 2026 use the updated form approved in PUCT Project 58211; amendments to earlier SGIAs use the old form. (ERCOT market notice M-A120125-02)
- Interconnecting entities have 180 days from ERCOT's synchronization approval to complete the conditions for commercial operation. (ERCOT PGRR103)
Dates to watch
- 2026-12-10 · ERCOT: Batch Zero large-load eligibility verification report due to the PUCT (ERCOT presentation, Aug 20, 2026)
- 2027-02-15 · El Paso Electric: Annual 45-day large-generator interconnection window opens (El Paso Electric tariff, Attachment M)
- 2028-03-05 · Texas (TCEQ): Construction General Permit TXR150000 expires; TCEQ renews it (TCEQ)
- 2029-09-01 · Texas (Legislature): Tax Code Chapter 312 abatements expire unless the Legislature renews them (Tax Code §312.006)
Full calendar, subscribable: interconnection page.
Where to verify
Every row above comes from ERCOT's monthly Generator Interconnection Status report (September 2026 file), compared mechanically with the August 2026 file by interconnection request number; the method is on the methodology page. Names, developers and points of interconnection are as ERCOT lists them. This brief reports changes; it takes no position on any project or company and is not advice.