ReferenceLarge-load power by market
West and South Texas: what a 50 MW connection costs under AEP Texas
What does a 50 MW connection cost in West and South Texas?
In short. In West and South Texas, AEP Texas connects a 50 MW load under same ERCOT/PUCT regime as Oncor, docket PUCT Project 58481. Minimum bill: none by rule (AEP cites take-or-pay ESAs for its vertically integrated utilities; AEP Texas is wires-only). Term: none by rule. Realistic energization: 2029. Open Factory's Large-Load Cost Table, as of August 21, 2026.
Facts
| Market | West and South Texas, TX (ERCOT) |
|---|---|
| Utility | AEP Texas |
| Tariff or rule | same ERCOT/PUCT regime as Oncor |
| Docket | PUCT Project 58481; Batch Zero |
| Status | as Oncor |
| Large-load threshold | 75 MW (SB 6) |
| Study fee | TDSP study (fee not published) |
| Security or collateral | AEP contracts are take-or-pay electric service agreements at the AEP level; AEP Texas terms not public |
| Minimum bill | none by rule (AEP cites take-or-pay ESAs for its vertically integrated utilities; AEP Texas is wires-only) |
| Contract term | none by rule |
| Ramp | none by rule |
| Exit fee | as Oncor for 75 MW+ |
| CIAC exposure | as Oncor; AEP Texas funding ~100 transmission projects with a $3.26B DOE loan |
| Realistic energization, 50 MW | 2029 |
| Verification | PARTIAL (regime verified; AEP Texas queue and fees not public) |
| Data as of | August 21, 2026 |
Questions
What does a 50 MW connection cost in West and South Texas?
AEP Texas: study fee TDSP study (fee not published); collateral AEP contracts are take-or-pay electric service agreements at the AEP level; AEP Texas terms not public; minimum bill none by rule (AEP cites take-or-pay ESAs for its vertically integrated utilities; AEP Texas is wires-only); term none by rule.
When can a 50 MW load be energized in West and South Texas?
2029. AEP added 6 GW of signed load agreements in Q2 2026 mostly in Texas; 765 kV Permian lines targeted for December 2028; Batch Zero plan fall 2027.
Which tariff applies to large loads in West and South Texas?
same ERCOT/PUCT regime as Oncor; docket PUCT Project 58481; Batch Zero; status: as Oncor.
Is this rate proposed or approved?
Approved or in effect as of the data date (as Oncor). PARTIAL (regime verified; AEP Texas queue and fees not public).
Sources
Data as of August 21, 2026. This page is rebuilt from the same table the Large-Load Interconnection Cost, the API and the MCP server read, so the figures cannot differ. Also available as plain markdown. Cite as Open Factory, West and South Texas: what a 50 MW connection costs under AEP Texas, August 21, 2026.
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