ReferenceLarge-load power by market
Dallas-Fort Worth: what a 50 MW connection costs under Oncor Electric Delivery
What does a 50 MW connection cost in Dallas-Fort Worth?
In short. In Dallas-Fort Worth, Oncor Electric Delivery connects a 50 MW load under SB 6 (75 MW+) and PUCT proposed 16 TAC 25.194; ERCOT Batch Zero (NPRR1325/PGRR145); standard TDSP facilities extension below 75 MW, docket PUCT Project 58481 (proposed rule published 2026-03-12; comments due 2026-04-17). Minimum bill: none (retail energy is bought from a REP; TDSP delivery charges follow 4CP demand). Term: none. Realistic energization: 2029. Open Factory's Large-Load Cost Table, as of August 21, 2026.
Facts
| Market | Dallas-Fort Worth, TX (ERCOT) |
|---|---|
| Utility | Oncor Electric Delivery |
| Tariff or rule | SB 6 (75 MW+) and PUCT proposed 16 TAC 25.194; ERCOT Batch Zero (NPRR1325/PGRR145); standard TDSP facilities extension below 75 MW |
| Docket | PUCT Project 58481 (proposed rule published 2026-03-12; comments due 2026-04-17); Batch Zero approved by ERCOT board 2026-06-01 and PUCT 2026-06-18 |
| Status | 25.194 still a proposal in sources opened; Batch Zero paused by the Governor's 2026-08-03 directive; ERCOT audit filing targeted 2026-12-10 |
| Large-load threshold | 75 MW (SB 6 and Batch Zero); 25 MW for ERCOT's community-impact review |
| Study fee | $100,000 for 75 to 250 MW and $300,000 above 250 MW plus actual study costs (proposed); below 75 MW: TDSP study (fee not published) |
| Security or collateral | $50,000 per MW at the intermediate agreement (20% refundable on withdrawal) plus a non-refundable $50,000 per MW interconnection fee at the interconnection agreement (proposed); none of this applies below 75 MW |
| Minimum bill | none (retail energy is bought from a REP; TDSP delivery charges follow 4CP demand) |
| Contract term | none |
| Ramp | none required by rule |
| Exit fee | 80% of posted security forfeited on withdrawal (75 MW+ proposal) |
| CIAC exposure | 100% of direct interconnection costs including radial lines and substations with no revenue credit (75 MW+ proposal); standard tariff CIAC below 75 MW |
| Realistic energization, 50 MW | 2029 |
| Verification | PARTIAL (regime verified from ERCOT/PUCT/Governor documents; Oncor's own tariff sheet not opened) |
| Data as of | August 21, 2026 |
Questions
What does a 50 MW connection cost in Dallas-Fort Worth?
Oncor Electric Delivery: study fee $100,000 for 75 to 250 MW and $300,000 above 250 MW plus actual study costs (proposed); below 75 MW: TDSP study (fee not published); collateral $50,000 per MW at the intermediate agreement (20% refundable on withdrawal) plus a non-refundable $50,000 per MW interconnection fee at the interconnection agreement (proposed); none of this applies below 75 MW; minimum bill none (retail energy is bought from a REP; TDSP delivery charges follow 4CP demand); term none.
When can a 50 MW load be energized in Dallas-Fort Worth?
2029. JLL 2026 outlook: ~2.5 years average for a new 50 MW data center in Dallas before the pause; Batch Zero final transmission plan not expected before fall 2027; Oncor has 298 GW of requests and about 44 GW that met Batch Zero criteria.
Which tariff applies to large loads in Dallas-Fort Worth?
SB 6 (75 MW+) and PUCT proposed 16 TAC 25.194; ERCOT Batch Zero (NPRR1325/PGRR145); standard TDSP facilities extension below 75 MW; docket PUCT Project 58481 (proposed rule published 2026-03-12; comments due 2026-04-17); Batch Zero approved by ERCOT board 2026-06-01 and PUCT 2026-06-18; status: 25.194 still a proposal in sources opened; Batch Zero paused by the Governor's 2026-08-03 directive; ERCOT audit filing targeted 2026-12-10.
Is this rate proposed or approved?
Not yet final: 25.194 still a proposal in sources opened; Batch Zero paused by the Governor's 2026-08-03 directive; ERCOT audit filing targeted 2026-12-10. The table carries the filed terms and the docket to watch.
Sources
- Open Factory Large-Load Cost Table
- ercot.com (2026-06-18)
- ercot.com (2026-04-01)
- gtlaw.com (2026-03)
- gov.texas.gov (2026-08-03)
- utilitydive.com (2026-08-07)
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, Dallas-Fort Worth: what a 50 MW connection costs under Oncor Electric Delivery, August 21, 2026.
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